Top Software Testing Companies in Sofia

Ratings Updated: March 24, 2026

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Featured

What are Featured Providers?
Simform

4.8 83 reviews
Premier Verified

$25,000+

$25 - $49 / hr

1,000 - 9,999

Serves Sofia, Bulgaria

Services provided

20% AI Development

20% Cloud Consulting & SI

10% CRM Consulting and SI +5 services

10% Custom Software Development

10% E-Commerce Development

10% ERP Consulting and SI

10% Enterprise App Modernization

10% Mobile App Development

Simform is a versatile software development company specializing in Application Testing and Software Quality Assurance. The company is noted for its flexibility, technical expertise, and proactive project management, consistently meeting project timelines and client needs with a 95% satisfaction rate. Clients frequently commend Simform for its excellent communication and ability to adapt to changing requirements, as highlighted in 80% of reviews.

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Reviews mention Easy to reach
Clients consistently highlight Simform's accessibility and responsiveness as a key strength. One client noted the effective communication through daily Skype interactions and team calls, emphasizing that Simform is always available and proactive in addressing issues. Despite occasional challenges, such as missed deadlines due to external factors, the team demonstrates a commitment to client satisfaction and transparency. Overall, the sentiment reflects a strong appreciation for Simform's dedication to maintaining open lines of communication throughout the project lifecycle.

Mobile App Development for Application Company

5.0 Sep 23, 2020

Our level of communication depends on the project. For some, we talk daily over Skype and send messages back and forth on a daily basis as well. For each, though, we have team Skype calls where we can hash through different issues and make sure the project is on track. Simform is always available and on top of things — the time zone has been no issue whatsoever.
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12 of 13 Application Testing reviews are 5 stars

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

Development & QA Support for Lifestyle Membership Platform
5.0 — Simform provides ongoing development and QA support for a lifestyle membership platform. The team has helped develop services, automated the client's regression testing, and set up automated class Read more
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Average Project Cost Breakdown

$50,000 to $199,999 (20) $10,000 to $49,000 (16) $200,000 to $999,999 (14) Less than $10,000 (1)

What Clients Have Said
Clients generally perceive Simform as offering good value for money, with many highlighting the company's competitive pricing and high-quality deliverables. For instance, one client noted that their costs were significantly lower than alternatives while receiving exceptional service. However, there were some mixed sentiments, with a few reviews indicating issues with project management and communication that impacted perceived value. Overall, the majority expressed satisfaction with the cost-effectiveness and quality of Simform's work, making them a reliable choice for various development needs.
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United States (48) Canada (6) England (4) Germany (4) United Arab Emirates (2) Switzerland (2) Netherlands (1) Norway (1) Singapore (1) Sweden (1) Israel (1) Ireland (1) Hungary (1) Finland (1)

This provider is fluent in 1 language:

English

This provider is available in 4 time zones:

Central Standard Time (CST)

Eastern Standard Time (EST)

Pacific Standard Time (PST)

Mountain Standard Time (MST)

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QA Wolf

4.9 59 reviews
Premier Verified

$5,000+

Undisclosed

50 - 249

Serves Sofia, Bulgaria

Services provided

100% Application Testing

QA Wolf is a software quality assurance company specializing in app and software testing services, including automated regression testing and test suite management. Reviews indicate an impressive 100% positive feedback, highlighting their rapid test delivery, responsive communication, and ability to customize workflows to client needs. Approximately 50% of reviewers commend their excellent project management and adaptability, which enhances partnership experiences.

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5 of 6 reviews are 5 stars

5 new reviews for Application Testing services

Unknown avg. project cost

Reviewed 6 times in the past 6 months
In the last six months, client feedback for QA Wolf has been overwhelmingly positive, highlighting their responsiveness, effective communication, and ability to deliver on time. Clients noted significant improvements in testing efficiency, with one client reporting over 30 hidden bugs uncovered, saving hundreds of manual hours. Additionally, their project management was praised for being well-organized and transparent. While minor areas for improvement were mentioned, such as clearer expectations on test creation, overall sentiment reflects strong satisfaction with QA Wolf's services.
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44 of 57 Application Testing reviews are 5 stars

9 new reviews for Application Testing in past 6 months

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

Application Testing for Financial Services Company
5.0 — QA Wolf is providing application testing services to a financial services company. The team defines and builds out the testing environment as well as runs and oversees the validation Read more
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Industry Experience

QA Wolf demonstrates significant expertise across multiple industries, including Insurance, Telecommunications, Financial Services, and Education. Client feedback highlights their strengths in automation, responsiveness, and effective communication. Specifically, clients noted increased test coverage, reduced manual testing efforts, and timely bug detection, leading to improved product quality. Overall sentiment across industries is highly positive, indicating QA Wolf as a strong partner for organizations seeking reliable QA automation services.
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Gambling Manufacturing Arts, entertainment & music Automotive Advertising & marketing Education Healthcare Media Consulting eCommerce Information technology Logistics & Supply Chain Agriculture Software Telecommunications Financial services Engineering Insurance

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United States (52) Canada (2) Australia (1) Colombia (1)

This provider is fluent in 1 language:

English

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QualityLogic

4.9 30 reviews
Verified

$5,000+

$25 - $49 / hr

50 - 249

Serves Sofia, Bulgaria

Services provided

100% Application Testing

QualityLogic is a distinguished provider of Application Testing and Software Quality Assurance services, offering comprehensive testing solutions such as QA Testing and Software Validation. Across numerous reviews, QualityLogic is praised for its professional communication, timely project delivery, and exceptional value for cost. Notably, 100% of reviewers commend their team’s expertise, communication, and commitment to quality, with no significant areas for improvement reported.

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Reviews mention Exceeds expectations
QualityLogic consistently exceeds client expectations, as evidenced by their meticulous test case creation and impressive results. For instance, one client noted their test cases matched the creator's high standards, achieving 95% test coverage and maintaining a bug escape rate below 10%. Another client highlighted QualityLogic's ability to launch 30 channels per month, surpassing the goal of 200 channels in half the expected time. Overall, clients commend their professionalism, flexibility, and effective communication.

Application Testing & QA for Cybersecurity Company

5.0 Mar 15, 2024

As for qualitative feedback, QualityLogic definitely exceeded my expectations. The detail in their test cases was exactly the level of detail I would have done myself. To put this into perspective, I consider myself to be an obsessive-compulsive person when it comes to over-engineering test cases.
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Application Testing & QA for Video Streaming Platform

5.0 Oct 17, 2022

QualityLogic has exceeded our expectations. In order to hit our goals, we needed to increase our channel launch capacity from 12–15 channels per month to over 20 channels. However, they achieved a much higher throughput, reaching 30 channel launches per month and hitting our goal in half the time we had budgeted.
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QA Testing for Global IT Development Company

5.0 Sep 28, 2017

They went above and beyond our expectations. They were good at avoiding failures and giving suggestions. In the beginning, I was the only interface with my company, but in the end, we saw that it was better if they spoke directly to our engineers.
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Industry Experience

QualityLogic has demonstrated its expertise across diverse industries including healthcare, advertising & marketing, information technology, and software development. Clients consistently commend their responsiveness, attention to detail, and professionalism. In healthcare, they excelled in enhancing product launches and user experiences. In the advertising sector, they ensured ADA compliance effectively. In IT and software industries, their testing capabilities, including regression and exploratory testing, significantly improved product quality. Overall, QualityLogic is well-suited for projects in healthcare, IT, advertising, and software development, showcasing strong customer satisfaction across all sectors.
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Healthcare Advertising & marketing Information technology Business services Legal Software Education Other Industry Arts, entertainment & music Consulting Transportation IT Services Financial services Media

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Average Project Cost Breakdown

$50,000 to $199,999 (7) $200,000 to $999,999 (7) $10,000 to $49,000 (6) Less than $10,000 (1) $1,000,000 to $9,999,999 (1)

What Clients Have Said
Clients consistently highlight QualityLogic's competitive pricing and exceptional value for money. One client noted that their 'cost to benefit ratio was a real win for our product launch,' while another mentioned that QualityLogic delivered 'strong project management' under budget. Overall, feedback indicates that clients feel they receive high-quality services that justify their investment, with many expressing satisfaction with the responsiveness and professionalism of the team.
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More responsive than most other service providers

QualityLogic is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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Cleverix - Software Engineering

5.0 7 reviews

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Premier Verified

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

50% Application Testing

20% Mobile App Development

20% Web Development +1 service

10% UX/UI Design

Cleverix - Software Engineering is a specialized software testing company, offering comprehensive services like App Testing, QA Testing, and Software Quality Assurance. Across reviews, 100% of clients praised their technical expertise, responsiveness, and ability to integrate into teams seamlessly. Clients noted significant improvements in product quality, testing coverage, and release velocity, with no reported areas for improvement.

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Reviews mention Innovative
Cleverix LLC has received overwhelmingly positive feedback regarding their innovative approach to collaboration and project execution. Clients highlighted their proactive insights and strategic thinking, which enhanced project quality. One client noted their dedication to partnership, stating that Cleverix contributed valuable ideas and demonstrated a genuine interest in success. The consistent delivery of high-quality work and open communication further solidified their reputation as an innovative partner, making it difficult for clients to identify areas for improvement.

UX/UI Design for SaaS Solution Company

5.0 Jun 25, 2024

What I found most impressive about this company was their approach to partnership. They didn't simply act as a service provider; instead, they positioned themselves as true collaborators in our project. This partnership mentality was evident in several ways: Proactive insights: They consistently offered valuable insights on industry best practices, often anticipating challenges before they arose. Strategic thinking: Rather than just following instructions, they contributed strategic ideas that enhanced the overall quality of our project.
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More responsive than most other service providers

Cleverix - Software Engineering is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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United States (3) Bulgaria (2) England (1)

This provider is fluent in 4 languages:

Bulgarian

English

German

Russian

This provider is available in 3 time zones:

Greenwich Mean Time (GMT)

Eastern European Time (EET)

Eastern Standard Time (EST)

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$2,000 Essential QA $5,000 Enhanced QA $8,000

QA Managed Service
Cleverix’s QAaaS model delivers end-to-end QA services tailored to your needs. Our ISTQB-certified QA engineers match your technical requirements, handling sprint-based testing to complex automation. Prices are indicative and may vary. A customized offer will be provided following the free discovery phase to align with your specific needs.
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Scalefocus

4.9 37 reviews
Premier Verified

$1,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

35% Custom Software Development

20% AI Development +2 services

20% Mobile App Development

15% Web Development

Scalefocus is a versatile technology solutions company specializing in software development, data engineering, and digital transformation. Reviews indicate an impressive 90% positive feedback, highlighting their strong project management, innovative solutions, and customer-centric approach. Approximately 80% of reviewers emphasize Scalefocus's adaptability and technical expertise, while 70% commend their effective communication and timely project delivery.

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Reviews mention Proactive
The feedback regarding Scalefocus's proactive approach is overwhelmingly positive. Clients highlighted their ability to quickly understand project needs and offer innovative solutions. One client noted, 'Scalefocus has consistently provided effective support to achieve our goals and has been proactive in understanding our needs.' Another remarked on their 'agility and proactive decision-making' during unforeseen circumstances. Overall, Scalefocus is recognized for their responsiveness and commitment to delivering tailored services, enhancing project outcomes significantly.

Custom Software & DevOps Managed Services for Gaming Company

5.0 Feb 11, 2024

There are quite a few reasons why our company and Scalefocus were able to collaborate excellently, but the most important ones were their uncompromising technology expertise and their culture of open communication and customer-centricity. The entire time we worked together, we felt like our project was in competent hands. Whenever there were unforeseen circumstances, those were handled with the necessary level of agility and proactive decision-making.
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IT Consulting & SI for Automotive Company

4.0 Mar 18, 2025

As one of our long-term partners, Scalefocus understands our needs and ways of working, which has been crucial in making quick and effective decisions. They have consistently provided effective support to achieve our goals and have been proactive in understanding our needs, offering suggestions, and taking action.
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AI Module Modernization for Risk Management Firm

5.0 Mar 9, 2026

Despite working within a very tight timeframe, the Scalefocus team delivered a fully functional evaluation platform and demonstrated it to our business stakeholders with impressive results. Communication was proactive and transparent throughout. They understood our priorities, adapted quickly to our platform’s architecture, and consistently delivered ahead of expectations given the time available.
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1 of 1 reviews is 5 stars

Unknown avg. project cost

Reviewed 1 time in the past 6 months
Recent client feedback for VisualNest highlights exceptional performance in project delivery and innovation. A CTO of a risk management firm praised the team for exceeding expectations by implementing an automated incident ingestion pipeline and an innovative LLM-as-a-Judge evaluation layer. Communication was noted as proactive and transparent, with timely deliverables. Overall sentiment reflects strong satisfaction, with clients appreciating the ability to make data-driven decisions and the transformative impact on operational scale.
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Industry Experience

Scalefocus has demonstrated strong expertise across various industries, including Energy & Natural Resources, Automotive, Gaming, Gambling, and Telecommunications. Clients noted their exceptional project management, timely delivery, and adaptability to unique requirements. In the Energy sector, they excel in implementing data solutions, while in Automotive, they drive digital transformation. The Gaming and Gambling industries benefit from their innovative software development skills. Overall, Scalefocus is viewed as a reliable partner with a proven track record in delivering tailored solutions across diverse sectors.
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Business services Energy & natural resources Automotive Gaming Gambling Software Transportation Consulting IT Services Information technology Healthcare Hospitality & leisure Advertising & marketing Manufacturing Government Telecommunications Media Other Industry Nonprofit

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More responsive than most other service providers

Scalefocus is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
Get in Touch

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Featured

What are Featured Providers?
BetterQA

4.9 64 reviews
Premier Verified

$5,000+

Undisclosed

50 - 249

Serves Sofia, Bulgaria

Services provided

80% Application Testing

10% Application Management & Support

10% Other IT Consulting and SI

BetterQA is a distinguished software quality assurance firm specializing in application and software testing. Their services are highly praised across diverse industries for enhancing software reliability and reducing defect rates. Notably, over 90% of reviews highlight their exceptional project management, responsiveness, and custom-tailored QA solutions that align with client needs, underscoring their reputation as a reliable and valuable partner in testing services.

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Reviews mention Creative
Clients have expressed high satisfaction with BetterQA's creative problem-solving abilities, particularly noting their 'ability to think outside the box on challenging issues.' The sentiment is overwhelmingly positive, with clients appreciating the alignment of company values and culture. The feedback indicates a successful partnership that led to improved QA processes and faster release cycles, demonstrating the effectiveness of BetterQA's innovative approach.

QA & Application Testing for Background Check Co

5.0 Jan 23, 2025

The company exhibited a standout ability to think outside the box on challenging issues. This quality was particularly impressive and unique to them, showcasing their creative approach to problem-solving. The provider's innovative thinking consistently added value to the project.
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36 of 40 Application Testing reviews are 5 stars

5 new reviews for Application Testing in past 6 months

$10,000 – $49,000 avg. project cost

Application Testing PROJECT HIGHLIGHT

Application QA Services for Real Estate Company
5.0 — BetterQA provided QA services for a real estate company. The team conducted application-level testing, validated key business processes, and identified gaps, risks, and opportunities for Read more
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Industry Experience

BetterQA has demonstrated expertise across various industries including Construction, Real Estate, IT Services, eCommerce, Financial Services, and Media. Clients commend their impactful QA services, which have led to improved operational efficiencies, reduced bugs, and enhanced product quality. Notably, clients in Construction and Real Estate praised their consulting and process optimization abilities, while their work in IT and eCommerce highlighted strong automation and testing frameworks. The overall sentiment is highly positive, indicating strong alignment with industry needs and adaptability to diverse project requirements.
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Real estate Construction Human Resources Financial services Media Information technology Software Fitness Consulting Food & Beverages Advertising & marketing Chemicals & Biotechnology Retail Logistics & Supply Chain Engineering Wellness & Fitness Other Industry Healthcare Banks IT Services eCommerce

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Average Project Cost Breakdown

$10,000 to $49,000 (19) $50,000 to $199,999 (10) Less than $10,000 (5) $200,000 to $999,999 (2)

What Clients Have Said
Clients consistently highlight BetterQA's competitive pricing and exceptional value for money. One client noted that their pricing fit the budget while offering 'good value for cost,' leading to improved efficiency and reduced operational issues. Another emphasized the affordability of their services, stating, 'for the price, they really can't be beat.' Overall, the sentiment across reviews indicates strong satisfaction with the cost-to-value ratio, with many clients expressing eagerness to engage BetterQA for future projects.
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QAlified

4.9 21 reviews
Premier Verified

Undisclosed

$25 - $49 / hr

10 - 49

Serves Sofia, Bulgaria

Services provided

100% Application Testing

QAlified is a Software Quality Assurance company specializing in comprehensive testing services, including App Testing, QA Testing, and Software Validation. They are consistently recognized for exceptional project management, timely delivery, and thorough bug reporting. Across numerous client reviews, 100% commend their dedication to quality and responsiveness, with notable appreciation for their flexibility and seamless integration into client workflows.

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Reviews mention Open to feedback
The sentiment regarding QAlified's openness to feedback is overwhelmingly positive. Clients noted their strong adaptability and responsiveness, stating that the team was proactive in clarifying requirements and integrating into existing workflows. One client highlighted their transparency and clear communication, which fostered trust and efficient collaboration. Additionally, while there was a suggestion for earlier implementation of test automation, this was framed as an opportunity for growth rather than a shortcoming, reinforcing their commitment to continuous improvement.

QA Services for Digital Products Company

5.0 Sep 21, 2023

QAlified demonstrated strong project management throughout the engagement. They adapted seamlessly to our existing project management tools and workflows, integrating into our sprint cycles without friction. Deliverables were consistently provided on time, with clear communication around progress, risks, and priorities. Their team was responsive to feedback and proactive in clarifying requirements, which helped maintain alignment and avoid delays. Overall, the collaboration was strong. If anything, we believe there could be an opportunity to expand further into test automation earlier in the engagement to increase long-term efficiency. That said, this was more of an opportunity for evolution than a shortcoming, and the team was always open to feedback and continuous improvement.
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1 of 1 reviews is 5 stars

1 new review for Application Testing services

Unknown avg. project cost

Reviewed 1 time in the past 6 months
Recent reviews highlight QAlified's effective quality assurance services, emphasizing their strong project management and adaptability to existing workflows. Clients noted improved site stability and reduced production issues, attributing success to QAlified's structured approach and transparent communication. A client praised their cultural alignment and proactive feedback, describing them as a true partner. While satisfied overall, one client suggested earlier integration of test automation for long-term efficiency. The sentiment is overwhelmingly positive, reflecting a reliable and collaborative partnership.
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14 of 15 Application Testing reviews are 5 stars

1 new review for Application Testing in past 6 months

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

App Testing for Content Creation Platform
5.0 — QAlified provides ongoing app testing and automation services for a content creation platform. The team builds and maintains test cases and documents test case failures. Read more
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Average Project Cost Breakdown

Less than $10,000 (3) $10,000 to $49,000 (3) $50,000 to $199,999 (3) $200,000 to $999,999 (2) $1,000,000 to $9,999,999 (1)

What Clients Have Said
Clients consistently noted that QAlified offers good value for money, with several reviews highlighting that their pricing fits within budgets while delivering high-quality results. For instance, one client emphasized that their choice was based on QAlified’s good value for cost, while another praised their ability to deliver high-quality findings on time. Overall sentiment reflects satisfaction with the cost-effectiveness of QAlified's services, aligning well with client expectations.
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Reactive Hive Ltd

5.0 10 reviews

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

100% Application Testing

Reactive Hive Ltd is a company specializing in comprehensive Application Testing and Software Quality Assurance services. Their reviews reflect a consistent pattern of client satisfaction with their seamless integration, fastidious attention to detail, and effective communication. Notably, 100% of reviewers appreciated their ability to quickly adapt and provide thorough testing, identifying crucial bugs and enhancing software quality across various platforms.

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Reviews mention Efficient
The overall sentiment regarding Reactive Hive's efficiency is highly positive. Clients noted their swift onboarding process and ability to quickly understand complex workflows, leading to immediate contribution. One client highlighted that the QA team integrated seamlessly into their daily operations, providing clear feedback with effective documentation. Additionally, the collaboration allowed for faster progression towards automation goals, demonstrating Reactive Hive's capability to enhance operational efficiency.

Platform Dev & Testing Services for Marketplace Platform

5.0 Dec 2, 2022

During our growth period, Valeriy really saved us a lot of time and reassurance for our projects which had harder to meet deadlines. Before the team came on, our testing was left up to the project managers at the time. Since Valeriy started and as he continued to work with us, we were able to deliver our projects with more confidence to our clients knowing that there has been extensive effort spent to ensure that our delivery is above the standard.
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3 of 3 reviews are 5 stars

3 new reviews for Application Testing services

Unknown avg. project cost

Reviewed 3 times in the past 6 months
In the past six months, Reactive Hive Ltd has received positive feedback for their seamless integration and thorough QA support. Clients praised their ability to quickly adapt to existing workflows and tools, resulting in timely project deliveries and improved accuracy in testing. Specific commendations included their effective bug reporting and communication practices. Overall, sentiment is highly favorable, with no noted areas for improvement across multiple reviews.
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Average Project Cost Breakdown

$10,000 to $49,000 (2)

What Clients Have Said
Clients consistently commend Reactive Hive Ltd for providing exceptional value for money, noting their reasonable pricing and high-quality deliverables. One client highlighted that their services were affordable for startups, while another emphasized the impressive quality of testing that improved project outcomes without complaints. Feedback indicates that clients felt they received more than they paid for, with many expressing satisfaction with the seamless integration and effective communication, underscoring the overall positive sentiment regarding cost-effectiveness and value.
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Ukraine (2) United States (2) Australia (1) Bulgaria (1) Germany (1) Netherlands (1) England (1)

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App Streams Ltd

5.0 9 reviews

$25,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

15% Application Testing

30% Web Development

25% Mobile App Development +3 services

10% AI Development

10% IoT Development

10% UX/UI Design

App Streams Ltd is a multifaceted company offering comprehensive Software Development and Application Testing services, including QA Testing and Software Quality Assurance. Feedback from their clients is overwhelmingly positive, highlighting their professionalism, effective project management, and high-quality deliverables. Notably, about 100% of reviewers commend their responsiveness and ability to meet deadlines, reflecting their strong commitment to client satisfaction.

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4 of 4 reviews are 5 stars

2 new reviews for Application Testing services

$10,000 – $49,000 avg. project cost

Reviewed 4 times in the past 6 months
In the last six months, client feedback for App Streams Ltd has been overwhelmingly positive, highlighting their responsiveness and dedication. Clients praised their ability to meet tight deadlines and deliver high-quality work, such as restoring critical app functionalities and developing intuitive user interfaces. Specific instances include a successful app launch with 50,000 downloads and effective collaboration leading to significant operational improvements. Overall, clients expressed satisfaction with the team's professionalism and adaptability, with no noted areas for improvement.
Read 4 Recent Reviews

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Average Project Cost Breakdown

$10,000 to $49,000 (1) $50,000 to $199,999 (1) $200,000 to $999,999 (1)

What Clients Have Said
Clients consistently praised App Streams Ltd for providing excellent value for money, with feedback highlighting that their pricing fit project budgets while delivering high-quality results. One client noted, 'Good value for cost,' emphasizing the company's alignment with their financial constraints. Another stated, 'They have become an integral part of the team,' reflecting satisfaction with the investment. Overall, the sentiment is overwhelmingly positive, indicating that clients feel they receive more than what they pay for.
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More responsive than most other service providers

App Streams Ltd is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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Bulgaria (4) United States (2) England (2)

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Wiser Technology

4.9 42 reviews

$25,000+

$25 - $49 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

70% Custom Software Development

20% IT Managed Services

Wiser Technology is a company specializing in Application Testing and Software Quality Assurance. Feedback highlights their efficient onboarding process and the exceptional skills of their QA testers, making them feel integral to their clients' teams. With 100% positive reviews, clients commend Wiser Technology for their dedication and effective remote collaboration.

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Reviews mention Open to feedback
Clients consistently praised Wiser Technology's openness to feedback, which fostered effective collaboration. One client highlighted that ITIDO's management team actively sought solutions during challenges rather than excuses, leading to swift problem resolution. Another noted their team's willingness to receive and share feedback, enhancing project outcomes. Overall, the sentiment reflects a strong appreciation for their adaptability and commitment to continuous improvement, although there is room for further development in specific technical areas.

Dev Staff Augmentation for Software Development Company

5.0 Mar 14, 2022

They meet deadlines, and they’re open to both receiving and sharing feedback for the improvement of the final product. There is good collaboration between us.
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Industry Experience

Wiser Technology has garnered positive feedback across various industries, showcasing expertise primarily in IT Services, Telecommunications, Healthcare, and Media. In IT Services, clients praised their innovative solutions and project management. In Telecommunications, they received accolades for responsiveness and integration capabilities. Their work in Healthcare demonstrated adaptability and technical proficiency, while feedback from Media highlighted effective collaboration and user-focused design. Overall, their strengths lie in software development, cloud solutions, and agile project management, making them a suitable partner for clients in these sectors.
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IT Services Research Telecommunications Information technology Sports Real estate Media Healthcare Financial services Software Food & Beverages Nonprofit Business services Education Other Industry Advertising & marketing Agriculture Energy & natural resources

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Bulgaria (20) Germany (5) United States (4) Finland (3) Canada (2) Switzerland (2) England (2) Ireland (1) Norway (1) Singapore (1) United Arab Emirates (1)

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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

4.9

Cost

4.7

Willing to Refer

5.0

Sofia-based clients praise Wiser Technology for their expertise in web and app development, including responsive design, cloud infrastructure, and complex IoT platforms. They highlight effective project management, clear communication, and a collaborative approach across diverse projects, from MVP launches to digital health solutions.
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Stanga1

4.8 8 reviews

$5,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

20% Custom Software Development

15% IT Staff Augmentation +5 services

15% Web Development

10% CRM Consulting and SI

10% Cloud Consulting & SI

10% Cybersecurity

10% Mobile App Development

Stanga1 is a leading company specializing in Software Quality Assurance and Development Testing services. Their client reviews highlight a strong commitment to quality, teamwork, and timely delivery, with 100% positive feedback on their communication and problem-solving skills. Notably, 90% of reviewers commend their adaptability and technical expertise in full-stack development and cloud infrastructure.

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Reviews mention Accessible
Clients have expressed high satisfaction with Stanga1's accessibility and responsiveness. One review highlighted their consistent availability and ability to work independently, allowing internal teams to focus on their tasks without interruptions. The client appreciated the timely delivery of services and noted that Stanga1 was always responsive to their needs, emphasizing their commitment to satisfactory project outcomes. Overall, the sentiment regarding accessibility is overwhelmingly positive.

Managed IT Services for Tire & Rubber Company

5.0 Mar 24, 2023

Stanga1 delivered everything in a timely manner while making themselves available all the time. Stanga1 people, once they became familiar with the project and the scope of the exercise, were able to perform all their activities without any need of our interference. This was very appreciated by our internal teams. They were very responsive, and cared very much about a satisfactory delivery of the projects.
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Industry Experience

Stanga1 has demonstrated expertise across various industries, including Software, Healthcare, Automotive, and Hospitality. In Software, they excelled in full-stack development and data architecture, leading to enhanced operational efficiency and user adoption. Their responsiveness and technical accuracy in Healthcare were noted, while in Automotive, they provided thorough technical audits and quality assurance. In Hospitality, their staff augmentation services facilitated timely project delivery and integration. Overall, Stanga1 is recognized for their technical proficiency, adaptability, and effective communication, making them a strong candidate for projects in these sectors.
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Software Healthcare Automotive Hospitality & leisure

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Average Project Cost Breakdown

What Clients Have Said
Stanga1 has received consistent feedback highlighting their strong value for cost. Clients have noted their 'good value for cost' in multiple reviews, emphasizing that their services provide tangible benefits, including increased efficiency and reduced implementation costs. One client specifically mentioned substantial cost savings due to leveraging cloud technologies. Overall sentiment reflects satisfaction with the financial investment, indicating that clients perceive Stanga1 as a cost-effective partner in achieving their project goals.
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1 of 1 Sofia-based review is 5 stars

Unknown avg. project cost for Application Testing services in Sofia

Sofia-based Application Testing project highlight

Web & Mobile App Dev for Software Development Company
5.0 — Stanga1 has developed a software development firm's web and mobile apps. They've managed the end-to-end development of the apps, processed and optimized large volumes of data, and built a cloud Read more
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SoCyber

5.0 13 reviews

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Application Testing

10% Application Management & Support

10% BI & Big Data Consulting & SI +7 services

10% Blockchain

10% Corporate Training & Coaching

10% Cybersecurity

10% Graphic Design

10% Public Relations

10% Social Media Marketing

10% Web Development

SoCyber is a specialized company offering Application Testing and Software Quality Assurance services, particularly in web application and API penetration testing. The reviews are overwhelmingly positive, with 100% of clients highlighting the professionalism and efficiency of their technical team and streamlined communication. Clients commend their ability to deliver quality work on time and within budget, although a post-remediation verification phase could enhance their offerings.

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2 of 2 Application Testing reviews are 5 stars

1 new review for Application Testing in past 6 months

Less than $10,000 avg. project cost

Application Testing PROJECT HIGHLIGHT

Penetration Testing for Video Chat Services Company
5.0 — SoCyber conducted web app and API penetration testing for a video chat services company. They adhered to the OWASP Web Security Testing Guide and other custom frameworks for the tests. Read more
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Industry Experience

SoCyber has demonstrated strong expertise in the information technology, software, consulting, and financial services sectors. Clients consistently praise their professionalism, efficient project management, and the ability to identify and remediate security vulnerabilities effectively. Positive feedback highlights their thorough penetration testing, regulatory compliance support, and strong communication. Overall, SoCyber is well-suited for companies in these industries, particularly those seeking to enhance cybersecurity measures and ensure compliance with industry standards.
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Information technology Software Consulting Financial services IT Services

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View projects from:

Bulgaria (8) England (2) United States (1)

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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Clients in Sofia emphasize SoCyber's strong technical skills in vulnerability assessments, penetration testing, and cybersecurity consulting. Their professional, responsive team consistently delivers detailed reports and actionable insights, successfully managing complex projects in highly regulated environments with a focus on quality and efficiency.
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DSS - Digital and Software Solutions

5.0 4 reviews

$10,000+

$25 - $49 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% Application Testing

40% IT Staff Augmentation

20% Web Development +4 services

15% Custom Software Development

5% Application Management & Support

5% IT Managed Services

5% Other IT Consulting and SI

DSS - Digital and Software Solutions provides comprehensive services in software development, ServiceNow development, and consulting. The company has received positive feedback for their professional project management, effective automation of processes, and responsive team. Their expertise in App Testing and QA Testing has been highlighted, with clients appreciating the swift response to needs and high project success rates.

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Reviews mention Timely
Client feedback consistently highlights DSS - Digital and Software Solutions' timely project delivery and responsiveness. One client noted, "All items were delivered according to schedule, and all our needs were promptly addressed," while another emphasized, "Tasks are delivered on time with great quality." Additionally, a third review stated, "Very quick response for our needs," showcasing a strong overall sentiment of reliability and efficiency in meeting project timelines.

Cybersecurity Platform Dev & IT Services for University

5.0 Feb 27, 2024

Project management was excellent, with clear communication and prompt response, efficient resource allocation and strict compliance with the timelines. All items were delivered according to schedule, and all our needs were promptly addressed.
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Custom Software Development for IT Services Co

5.0 Sep 19, 2023

Tasks are delivered on time with a great quality. Our needs and needs of customer are fully covered.
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UX/UI Design for Bank

5.0 Jun 25, 2025

Describe their project management. Did they deliver items on time? How did they respond to your needs? Yes. Already was delivered on time. Very quick response for our needs.
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Industry Experience

DSS - Digital and Software Solutions has demonstrated expertise across several industries, including Banking, Research, and Information Technology. Feedback highlights their strengths in improving customer experiences in banking applications, delivering complex cybersecurity platforms for universities, and providing quality IT support solutions. Overall sentiment is highly positive, reflecting their reliability, flexibility, and strong project management capabilities, making them a suitable partner for clients in these sectors.
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Banks Research Information technology

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Average Project Cost Breakdown

$200,000 to $999,999 (1)

What Clients Have Said
Clients consistently highlight DSS - Digital and Software Solutions for their competitive pricing and strong value for money. One client noted, 'Pricing fits our budget' and 'Good value for cost,' while another echoed similar sentiments, emphasizing their 'great culture fit' and alignment of values. Overall, reviews reflect a positive sentiment regarding cost-effectiveness, with no significant complaints regarding pricing or value, indicating a reliable choice for project partners.
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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Sofia-based clients praise DSS for their expertise in mobile banking app design, cybersecurity platforms, and business process management solutions. They highlight timely delivery, flexibility, and tailored services for complex projects in finance and academia, emphasizing their reliability and value-driven approach.
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MyApp.BG

5.0 1 review

$5,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% Application Testing

80% Mobile App Development

10% Application Management & Support

MyApp.BG is a development company that specializes in designing and creating applications from scratch. The overall feedback is highly positive, with 100% of the reviewers highlighting their responsiveness and client-focused approach. The company is praised for its good pricing and effective project management, though it could benefit from increased local advertising.

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Industry Experience

MyApp.BG has received positive feedback primarily from clients in the health and wellness sector, highlighted by successful project outcomes and effective collaboration. Clients appreciate their responsiveness and competitive pricing while noting their expertise in transforming ideas into functional applications. Overall sentiment indicates strong satisfaction with their development capabilities, making them a suitable partner for clients in health-related projects seeking reliable app development services.
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Other Industry

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Average Project Cost Breakdown

What Clients Have Said
Clients have expressed satisfaction with MyApp.BG's pricing, noting that they offer 'good prices' while delivering quality work. One client highlighted the successful sale of their app, attributing their achievement to the effective collaboration with MyApp.BG. Overall, the sentiment regarding cost and value for money is positive, with clients appreciating the balance between affordability and the quality of service received.
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Quality House

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Services provided

80% Application Testing

20% IT Staff Augmentation

Application Testing company Quality House is in Sofia, Bulgaria and Bucharest, Romania. They provide Application Testing and IT staff augmentation.
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adesso Bulgaria

Not yet reviewed

$25,000+

$25 - $49 / hr

50 - 249

Sofia, Bulgaria

Services provided

20% Application Testing

30% Custom Software Development

20% Application Management & Support +2 services

20% IT Managed Services

10% Enterprise App Modernization

Adesso Bulgaria is a custom software development company established in 2018. Their services include Custom Software Development and IT managed services.
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DeepSource

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

25% Application Testing

30% Mobile App Development

30% Web Development +1 service

15% Custom Software Development

DeepSource, a mobile app development company, is headquartered in Sofia, Bulgaria. The team specializes in Mobile App Development and Web Development.
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Atom Solutions Ltd.

Not yet reviewed

$5,000+

$25 - $49 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% Application Testing

30% Web Development

20% Web Design +4 services

15% Mobile App Development

10% AR/VR Development

10% UX/UI Design

5% Graphic Design

Atom Solutions Ltd. Is a web development firm founded in 2008. Located in Sofia, Bulgaria and Silkeborg, Denmark, the team focuses on Web Development and Web Design.
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Energize Global Services

Not yet reviewed

$10,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

30% IT Staff Augmentation

19% Custom Software Development +8 services

10% DevOps Managed Services

10% Microservices Architecture Services

10% Web Design

5% Cloud Consulting & SI

3% Staffing

1% AI Development

1% IT Strategy Consulting

1% Recruiting

Energize Global Services is a Yerevan, Armenia-based IT staff augmentation company. They focus on IT staff augmentation and Custom Software Development and were established in 2007.
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Sofia, Bulgaria

European Trade Center, Building D, Floor 6, 115M Tsarigradsko Shosse
Sofia, Bulgaria 1784
151 - 200

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NATEK

Not yet reviewed

$250,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

20% Application Management & Support

20% DevOps Managed Services +7 services

10% Computer Engineering

10% IT Managed Services

10% IT Staff Augmentation

5% AI Development

5% BI & Big Data Consulting & SI

5% Cloud Consulting & SI

5% Staffing

Launched in 2004, NATEK is a midsize DevOps Managed Services company. Their services include DevOps Managed Services and Application Management & Support.
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Sofia, Bulgaria

Sopharma Business Towers Complex, 5 Lachezar Stanchev str.
Sofia, Bulgaria 1797
76 - 100

+359 896 935 690

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Estafet

Not yet reviewed

$100,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

20% Application Testing

20% AI Development

20% API Development +3 services

20% Microservices Architecture Services

10% Custom Software Development

10% Web Design

Estafet is a midsize custom software development firm. Launched in 2002, the team provides Custom Software Development and Artificial Intelligence.
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Sofia, Bulgaria

Floor 5 Vitosha Business Center 47, Blvd. "Cherni vrah" Blvd, 1407 Sofia, Bulgaria
Sofia, Bulgaria 1407
76 - 100

+447779246741

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1Crew

Not yet reviewed

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

30% Application Testing

30% Cloud Consulting & SI

15% IT Managed Services +2 services

15% IT Strategy Consulting

10% IT Staff Augmentation

1Crew is a cloud consulting & SI company launched in 2013. The team focuses on cloud consulting & SI and Application Testing.
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TINQIN

Not yet reviewed

$50,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

40% Custom Software Development

15% Business Consulting +5 services

10% Application Management & Support

10% Web Development

5% IT Strategy Consulting

5% UX/UI Design

5% Web Design

In Sofia, Bulgaria, TINQIN is a midsize custom software development firm. Their services include Custom Software Development and Business Consulting.
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Soft2Run

Not yet reviewed

$10,000+

$25 - $49 / hr

10 - 49

Bałsza, Bulgaria

Services provided

15% Application Testing

30% Custom Software Development

20% AI Development +6 services

10% Application Management & Support

5% E-Commerce Development

5% Enterprise App Modernization

5% Mobile App Development

5% Other Application Development

5% Web Development

Soft2Run is a software development company. The team is headquartered in Bałsza, Bulgaria, and their services include Custom Software Development and Artificial Intelligence.
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NCB Ltd

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

20% Application Testing

30% Custom Software Development

30% Web Development +2 services

10% Blockchain

10% IoT Development

Founded in 2013, NCB Ltd is a software development firm. Their team offers Custom Software Development and Web Development.
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Concord Europe

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Services provided

15% Application Testing

30% Custom Software Development

30% IT Staff Augmentation +3 services

10% BI & Big Data Consulting & SI

10% Other IT Consulting and SI

5% IT Strategy Consulting

Concord Europe is an IT staff augmentation company launched in 2017. The team offers IT staff augmentation and Custom Software Development.
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ENDIGITAL

Not yet reviewed

$25,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

15% Application Testing

15% Custom Software Development

15% E-Commerce Development +4 services

15% IT Staff Augmentation

15% Mobile App Development

15% Web Development

10% IT Managed Services

ENDIGITAL is a custom software development firm launched in 2012. The team offers Custom Software Development and E-Commerce Development and is located in Sofia, Bulgaria and LONDON, England.
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Wildorb Interactive Design Studio

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Application Testing

10% Branding

10% Custom Software Development +7 services

10% E-Commerce Development

10% Graphic Design

10% IoT Development

10% Mobile App Development

10% UX/UI Design

10% Web Design

10% Web Development

Wildorb Interactive Design Studio, a software development firm, is based in Sofia, Bulgaria. They provide Custom Software Development and UX/UI Design.
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Sourcelab

Not yet reviewed

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

15% Application Testing

15% UX/UI Design

15% Web Development +6 services

10% Custom Software Development

10% E-Commerce Development

10% Low/No Code Development

10% Mobile App Development

10% Web Design

5% Application Management & Support

Sourcelab is an UX design agency. They offer UX/UI Design and Web Development and were established in 2019. The company is in Sofia, Bulgaria and Amsterdam, Netherlands.
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More responsive than most other service providers

Sourcelab is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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Roller Gaming Ltd.

Not yet reviewed

$100,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

15% Application Testing

45% Mobile App Development

20% Custom Software Development +1 service

20% Web Development

Roller Gaming Ltd. Is a mobile app development company established in 2021. The firm provides Mobile App Development and Custom Software Development, and is small.
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Devocean Services

5.0 2 reviews

$10,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% Application Testing

25% Custom Software Development

25% Enterprise App Modernization +3 services

15% Mobile App Development

15% Web Development

10% Application Management & Support

Devocean Services provides comprehensive IT solutions, including application testing, software testing, and app QA, specializing in creating and overhauling platforms for consultancy and IT firms. Their reviews highlight a strong emphasis on professionalism, transparent communication, and timely delivery. Clients commend their entrepreneurial experience, superior project management, and ability to meet client needs efficiently, often exceeding expectations without compromise on budget or timeline.

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VA Software Solutions ltd

Not yet reviewed

$50,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Application Testing

20% Custom Software Development

20% Enterprise App Modernization +4 services

20% Web Development

10% Application Management & Support

10% BI & Big Data Consulting & SI

10% Robotics Process Automation

Launched in 2019, VA Software Solutions ltd is a custom software development company. Based in Earley, England and Sofia, Bulgaria, the team focuses on Custom Software Development and Web
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Sofia, Bulgaria

bul. Cherni Vrah 47
Sofia, Bulgaria 1407
10 - 15

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SavvyTribe

Not yet reviewed

$25,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Application Testing

25% Custom Software Development

25% IT Staff Augmentation +4 services

10% AI Development

10% BI & Big Data Consulting & SI

10% Cloud Consulting & SI

10% Enterprise App Modernization

SavvyTribe is an IT staff augmentation company. Launched in 2022, the agency is in Sofia, Bulgaria and Sofia, Bulgaria. Their services include IT staff augmentation and Custom Software Development.
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Emerging Markets Consulting

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Sofia, Bulgaria

Services provided

25% Application Testing

50% IT Strategy Consulting

25% Business Consulting

Emerging Markets Consulting is a small IT strategy consulting company located in Sofia, Bulgaria. The team provides IT strategy consulting and Application Testing.
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Populosoft

Not yet reviewed

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Services provided

25% Application Testing

40% Mobile App Development

25% Custom Software Development +1 service

10% Social Media Marketing

In Sofia, Bulgaria, Populosoft is a mobile app development company. Founded in 2025, the team offers Mobile App Development and Custom Software Development.
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Web Publishing House

Not yet reviewed

$10,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% Application Testing

30% Mobile App Development

30% Web Development +2 services

20% IT Strategy Consulting

10% UX/UI Design

Web Publishing House is a mobile application development firm. Their small team is based in Sofia, Bulgaria. Their services include Mobile App Development and Web Development.
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SoftConsultGroup

Not yet reviewed

$10,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% Application Testing

50% Custom Software Development

20% Mobile App Development +1 service

20% Web Development

SoftConsultGroup is a Sofia, Bulgaria-based software development company. Their services include Custom Software Development and Mobile App Development.
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Top Software Testing Companies in Sofia

List of the Top Sofia QA Testers

Reviews mention Easy to reach

Mobile App Development for Application Company

Development & QA Support for Lifestyle Membership Platform

Average Project Cost Breakdown

What Clients Have Said

Reviewed 6 times in the past 6 months

Application Testing for Financial Services Company

Industry Experience

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Reviews mention Exceeds expectations

Application Testing & QA for Cybersecurity Company

Application Testing & QA for Video Streaming Platform

QA Testing for Global IT Development Company

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Average Project Cost Breakdown

What Clients Have Said

QualityLogic is very responsive

Reviews mention Innovative

UX/UI Design for SaaS Solution Company

Cleverix - Software Engineering is very responsive

QA Managed Service

Reviews mention Proactive

Custom Software & DevOps Managed Services for Gaming Company

IT Consulting & SI for Automotive Company

AI Module Modernization for Risk Management Firm

Reviewed 1 time in the past 6 months

Industry Experience

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Scalefocus is very responsive

Reviews mention Creative

QA & Application Testing for Background Check Co

Application QA Services for Real Estate Company

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Average Project Cost Breakdown

What Clients Have Said

Reviews mention Open to feedback

QA Services for Digital Products Company

Reviewed 1 time in the past 6 months

App Testing for Content Creation Platform

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Efficient

Platform Dev & Testing Services for Marketplace Platform

Reviewed 3 times in the past 6 months

Average Project Cost Breakdown

What Clients Have Said

Reviewed 4 times in the past 6 months

Average Project Cost Breakdown

What Clients Have Said

App Streams Ltd is very responsive

Reviews mention Open to feedback

Dev Staff Augmentation for Software Development Company

Industry Experience

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Reviews mention Accessible

Managed IT Services for Tire & Rubber Company

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Web & Mobile App Dev for Software Development Company

Penetration Testing for Video Chat Services Company

Industry Experience

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Reviews mention Timely

Cybersecurity Platform Dev & IT Services for University

Custom Software Development for IT Services Co

UX/UI Design for Bank

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What Clients Have Said

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said