Top Software Testing Companies in Sofia

Ratings Updated: March 3, 2026

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Featured

What are Featured Providers?
Simform

4.8 82 reviews
Premier Verified

$25,000+

$25 - $49 / hr

1,000 - 9,999

Serves Sofia, Bulgaria

Services provided

10% AI Development

10% CRM Consulting and SI

10% Cloud Consulting & SI +7 services

10% Custom Software Development

10% E-Commerce Development

10% ECM Consulting and SI

10% ERP Consulting and SI

10% Enterprise App Modernization

10% Mobile App Development

10% Unified Communications Consulting & SI

Simform is a versatile software development company specializing in application testing and quality assurance services. The company consistently receives positive feedback, with 90% of reviews highlighting timely delivery and effective communication. Clients commend Simform for its technical expertise, flexibility, and proactive approach, making it a reliable partner for software quality assurance and development testing projects.

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1 of 3 reviews are 5 stars

$50,000 – $199,999 avg. project cost

Reviewed 3 times in the past 6 months
In the past six months, client feedback on Simform has been overwhelmingly positive, highlighting their excellent communication, timely project delivery, and deep technical expertise. One client noted their structured approach and proactive updates, which made the discovery phase seamless. Another praised their flexibility and trustworthiness, stating they earned the confidence of executive leadership. Overall, clients commend Simform's ability to translate complex challenges into practical solutions, with minimal areas for improvement identified.
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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 (2)

What Clients Have Said
Clients consistently praise Simform for their cost-effectiveness and overall value, highlighting that their pricing aligns well with the quality of work delivered. For instance, a CEO noted that Simform provided high-quality services at a fraction of the cost compared to hiring in-house developers. Another client appreciated the flexibility and responsiveness of Simform's team, stating that they delivered on time and within budget. However, there are a few concerns regarding communication and project management in specific instances, indicating room for improvement.
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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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Dubai, United Arab Emirates

Office 402 Cluster O
Dubai, United Arab Emirates
2 - 5

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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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Reviews mention Open to feedback
Clients have consistently praised QA Wolf for their responsiveness to feedback and adaptability to changing project needs. One client noted their proactive communication and ability to adjust test focus as requirements evolved, while another highlighted their personalized approach that ensured alignment with the client's goals. Overall, the sentiment reflects a strong appreciation for QA Wolf's commitment to collaboration and improvement, although some clients suggested enhancements in bug reporting processes.

QA Testing for Telecommunications Software Company

4.0 Dec 30, 2025

The team was highly responsive to feedback and changing priorities, adjusting test focus and coverage as our needs evolved. Communication was proactive, follow-ups were consistent without being intrusive, and issues were addressed quickly. Beyond that, QA Wolf was receptive to feedback and consistently adjusted their approach as the partnership evolved.
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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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20 of 22 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

Application Testing & QA for Cybersecurity Company
5.0 — QualityLogic provided QA services for a cybersecurity company. Their work included creating automation tests, test cases, and test plans, as well as executing those test cases and plans as manual QA Read more
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United States (25) Canada (1) Singapore (1) Spain (1)

This provider is fluent in 1 language:

English

This provider is available in 3 time zones:

Central Standard Time (CST)

Pacific Standard Time (PST)

Mountain Standard Time (MST)

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Oklahoma City, OK

4045 NW 64th Street, Suite 120
Oklahoma City, OK 73116
101 - 150

+1 (208) 424-1905

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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 Team players
Clients consistently highlight Cleverix - Software Engineering as exemplary team players, noting their ability to integrate seamlessly into existing workflows. One client emphasized their proactive collaboration, stating that Cleverix maintained clear communication and adapted swiftly to changing priorities. The CTO of Looming Tech praised their technical expertise and ease of collaboration, which facilitated a productive partnership. Overall, the sentiment reflects high satisfaction with Cleverix's team-oriented approach and effective integration into client teams.

App Testing & PPC for Software Development Company

5.0 Aug 19, 2025

Cleverix worked independently with minimal supervision, proactively identified issues, and collaborated closely with our internal teams. Their involvement directly contributed to a more stable platform and faster time to market. Cleverix brings strong technical expertise combined with a deep understanding of both technical and business needs. They’re fast, communicative, and extremely easy to work with—making collaboration smooth and productive.
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6 of 6 Application Testing reviews are 5 stars

3 new reviews for Application Testing in past 6 months

$10,000 – $49,000 avg. project cost

Application Testing PROJECT HIGHLIGHT

Application Testing for Academic Research Sharing Website
5.0 — Cleverix - Software Engineering tested an academic research sharing website's functionality. The team provided a detailed report with recommendations. Read more
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Industry Experience

Cleverix has demonstrated expertise across Information Technology, Logistics & Supply Chain, and Consumer Products. In IT, they excel in QA processes, microservices, and cloud development, consistently delivering high-quality results and improved testing coverage. In Logistics, they effectively developed tailored CRM solutions, enhancing operational efficiency. Their work in Consumer Products focused on robust QA for a gifting platform, streamlining go-to-market strategies. Overall, clients praise their professionalism, responsiveness, and technical proficiency, making them a strong fit for projects in these industries.
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Logistics & Supply Chain Consumer Products Information technology

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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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Scalefocus

4.8 36 reviews
Premier Verified

$75,000+

$50 - $99 / hr

250 - 999

София, Bulgaria

Services provided

10% Application Testing

20% Mobile App Development

15% Custom Software Development +5 services

15% Web Development

10% AI Development

10% CRM Consulting and SI

10% Cloud Consulting & SI

10% IT Staff Augmentation

Scalefocus is a technology consulting and software development company providing tailored solutions across diverse industries, including energy, automotive, gaming, and telecommunications. With consistently positive feedback, 100% of reviews highlight their expertise, adaptability, and effective project management. Clients value their technical proficiency and customer-centric approach, which results in successful project outcomes and long-term partnerships.

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Reviews mention Easy to work with
Clients frequently highlight Scalefocus as 'easy to work with,' noting the responsiveness and collaborative nature of their team. One client specifically mentioned the assigned developer as 'a very nice person' who facilitated direct communication, enhancing project efficiency. Overall, the sentiment reflects a positive experience with Scalefocus, emphasizing their adaptability and supportive approach in meeting client needs.

React Frontend Dev for Engineering Firm

5.0 Jul 24, 2018

The developer they assigned is a very nice person and easy to work with. We gave the developer a few tasks and explained what the data means and how it needs to be displayed. We communicated with him directly and used Skype whenever he was out of our office.
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Industry Experience

Scalefocus has demonstrated notable expertise across various industries including Energy & Natural Resources, Automotive, Gaming, Gambling, and Healthcare. Clients praise their project management, technical proficiency, and ability to deliver tailored solutions. In the energy sector, they excel in data analytics and platform development, while in automotive and healthcare, they focus on digital transformation and user experience improvements. Overall, Scalefocus is perceived as a valuable partner, particularly for projects requiring a combination of technology insight and operational efficiency.
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Energy & natural resources Automotive Gaming Gambling Software Transportation Consulting IT Services Information technology Healthcare Hospitality & leisure Business services Advertising & marketing Manufacturing Government Telecommunications Media Other Industry Nonprofit

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Average Project Cost Breakdown

$50,000 to $199,999 (6) $200,000 to $999,999 (4) Less than $10,000 (2) $10,000 to $49,000 (2)

What Clients Have Said
Client feedback on Scalefocus indicates a strong overall sentiment regarding their cost and value for money. Many clients highlighted that Scalefocus provides 'good value for cost' and has a 'great culture fit.' One client noted that their pricing fit their budget while another emphasized a 'high price to quality ratio.' Overall, clients expressed satisfaction with the return on investment, citing timely delivery and high-quality results, reinforcing Scalefocus's reputation as a reliable partner.
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Review Rating from Clients

4.9/5.0

Quality

4.8

Schedule

4.8

Cost

4.7

Willing to Refer

4.8

Sofia clients appreciate Scalefocus's deep knowledge in custom software, cloud infrastructure, and digital transformation, managing projects from initial analysis to deployment. Their responsiveness, technical excellence, and collaborative style have resulted in faster time-to-market and improved system performance across sectors like sports betting, transportation, and telecommunications.
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What are Featured Providers?
Savarian.tech

5.0 8 reviews
Verified

$1,000+

$25 - $49 / hr

10 - 49

Serves Sofia, Bulgaria

Services provided

100% Application Testing

Savarian.tech is an application testing company specializing in Software Quality Assurance and comprehensive Testing Services. They have consistently received positive feedback, with reviewers highlighting their expertise in App QA and their client-centric approach. Approximately 100% of reviewers praised their commitment to quality and project management skills, noting timely delivery and seamless communication. Their flexibility and attention to detail are frequently commended.

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Reviews mention Exceeds expectations
Savarian.tech consistently exceeds client expectations, as highlighted by their commitment to quality and innovation. One client noted a significant 35% enhancement in product performance and improved user experience due to their thorough testing. Another client praised their excellent project management, transparent communication, and flexibility in adapting to project needs. Both clients expressed complete satisfaction with the results, emphasizing Savarian.tech's ability to deliver outstanding outcomes without any identified areas for improvement.

App Testing Services for App Development Company

5.0 Sep 5, 2023

What impressed us most about Savarian.tech was their unwavering commitment to quality. They consistently went above and beyond to ensure the highest standards in their work, which instilled confidence in our project's success. Their dedication to innovation was also notable, as they proactively sought out and implemented cutting-edge testing approaches.
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5 of 5 Application Testing reviews are 5 stars

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

QA Services for Online Marketplace Platform
5.0 — Savarian.tech completed the application testing of a digital marketplace's web version, including performance testing, usability/user acceptance, and regression testing. Read more
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Industry Experience

Savarian.tech has demonstrated expertise across several industries, including Software, Design, Advertising & Marketing, and Other sectors. Clients have praised their commitment to quality, innovation, and effective communication. In the Software domain, they excel in performance optimization and scalability. In Design, they enhance user experience, while in Advertising & Marketing, they streamline testing workflows. Overall, feedback reflects strong satisfaction, indicating Savarian.tech is a solid choice for projects requiring thorough testing and quality assurance across these industries.
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Software Design Advertising & marketing Other Industry

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Poland (2) Ukraine (2) United States (1)

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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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5 of 6 reviews are 5 stars

5 new reviews for Application Testing services

$50,000 – $199,999 avg. project cost

Reviewed 6 times in the past 6 months
In the past six months, BetterQA has consistently received positive feedback for their strong project management, timely responses, and effective collaboration. Clients, such as a construction company and a real estate firm, noted improved operational efficiency and structured QA practices. Specific praise was given for their tailored approaches and proactive communication. Overall, sentiment remains highly favorable, with clients emphasizing BetterQA's expertise, flexibility, and value for cost, while indicating no significant areas for improvement.
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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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United States (18) Romania (8) England (4) Germany (4) Switzerland (3) France (2) Kenya (1) Belgium (1) Russia (1) Singapore (1) Sweden (1) India (1) United Arab Emirates (1) Hong Kong (1) Canada (1)

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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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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
In the past six months, QAlified has received positive feedback for their quality assurance services, particularly in enhancing website stability through thorough testing and structured defect reporting. Clients noted their strong project management, timely deliverables, and seamless integration into existing workflows. One client highlighted QAlified's transparency and cultural alignment, fostering a collaborative environment. While there is potential for earlier adoption of test automation, overall sentiment remains highly favorable, emphasizing trust and effective communication.
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Industry Experience

QAlified has demonstrated strong expertise across multiple industries, including healthcare, media, education, and manufacturing. Clients praised their thoroughness in quality assurance, performance testing, and usability, resulting in improved application reliability and user satisfaction. Overall sentiment is highly positive, highlighting their adaptability, effective communication, and commitment to delivering quality solutions. Companies in healthcare, media, and education particularly benefited from their tailored approach, making QAlified a suitable partner for organizations seeking robust testing and quality assurance services.
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Information technology IT Services Media Software Advertising & marketing Manufacturing Education Government Retail

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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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United States (9) Uruguay (7) Argentina (1) Germany (1)

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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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Industry Experience

Reactive Hive Ltd has demonstrated significant expertise in the eCommerce sector, providing quality assurance and testing services for platforms such as Magento and Adobe Commerce. Feedback highlights their strengths in seamless integration, thorough testing practices, and effective communication. Clients across various industries, including Retail and Fashion, appreciate their attention to detail and ability to enhance software quality. Overall sentiment indicates a strong alignment with companies seeking reliable QA support, particularly in eCommerce-related projects.
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IT Services Retail Software eCommerce

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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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5 of 5 Application Testing reviews are 5 stars

2 new reviews for Application Testing in past 6 months

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

Mobile App Development for Healthcare Company
5.0 — A healthcare company has hired App Streams Ltd for mobile app development. The team's work includes React, Nojde.js, and Python development from scratch. Read more
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Industry Experience

App Streams Ltd has demonstrated significant expertise across diverse industries, including healthcare, information technology, consumer products, automotive, manufacturing, and media. Clients praised their exceptional project management, timely delivery, and strong collaborative culture. In healthcare, they excelled in developing user-friendly applications for patient care. In IT and consumer products, they provided innovative solutions for gamification and fan engagement. Overall, feedback reflects high satisfaction across all sectors, making them a versatile partner for clients seeking reliable software development support.
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Other industries Information technology Consumer products & services Healthcare Software Manufacturing Automotive Media

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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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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

4.5

App Streams Ltd in Sofia excels in creating web and mobile solutions, demonstrated by their successful launch of an e-bike fleet management system. Clients commend their responsiveness, cultural compatibility, and project management, making them a reliable partner for complex tech projects in the region.
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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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1 of 2 Application Testing reviews are 5 stars

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

Software Dev Services for IT Company
5.0 — An IT company has partnered with Wiser Technology (formerly ITIDO) for software development services. They are working on а new custom monitoring solution and are tasked with researching and Read more
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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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Average Project Cost Breakdown

$10,000 to $49,000 (10) $50,000 to $199,999 (7) Less than $10,000 (6) $200,000 to $999,999 (4) $1,000,000 to $9,999,999 (2)

What Clients Have Said
Clients consistently highlight Wiser Technology's competitive pricing and excellent value for money. For instance, one client noted that their pricing fit their budget while still delivering high-quality work, emphasizing a great culture and alignment in values. Another client commended them for providing good value for the cost, leading to satisfaction with the project's outcomes. Overall, the sentiment reflects a strong appreciation for the cost-effectiveness of Wiser Technology's services.
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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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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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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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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

In Sofia, Stanga1 is recognized for their comprehensive technical skills in web, mobile, and cloud solutions, successfully managing large-scale projects like transportation systems. Clients highlight their proactive communication, problem-solving, and ability to meet deadlines, resulting in scalable, efficient platforms.
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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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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

Sofia-based clients commend SoCyber for their comprehensive security testing, regulatory compliance, and effective communication. Their work spans web, mobile, and infrastructure security, with a focus on high-quality, timely results, and tailored solutions for financial institutions, government agencies, and corporate clients.
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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 Detail-oriented
Clients consistently praise DSS - Digital and Software Solutions for their detail-oriented approach. Feedback highlights their 'precision to detail' and ability to deliver solutions that align closely with client needs. One client noted their impressive flexibility and commitment to finding the best solutions, further reinforcing the positive sentiment surrounding their meticulous work. Overall, the sentiment is highly favorable, with no recommendations for improvement, indicating a strong alignment with client expectations.

UX/UI Design for Bank

5.0 Jun 25, 2025

The company is noted for their flexibility and precision to detail. They consistently strive to find the best solution for the client, ensuring that every aspect of the project is carefully considered and executed with meticulous attention.
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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

Undisclosed

Undisclosed

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

10% Application Management & Support

10% Cloud Consulting & SI +10 services

10% Custom Software Development

10% IT Managed Services

10% Web Design

7% ERP Consulting and SI

7% Unified Communications Consulting & SI

6% CRM Consulting and SI

5% BI & Big Data Consulting & SI

5% Cybersecurity

5% IT Staff Augmentation

5% Mobile App Development

Launched in 2004, NATEK is a custom software development firm. Their services include Custom Software Development and cloud consulting & SI.
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Sofia, Bulgaria

Uniqa Business Center , 18 Todor Aleksandrov blvd
Sofia, Bulgaria 1000
401 - 500

+359 895 522 944

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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

Reviewed 3 times in the past 6 months

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Open to feedback

QA Testing for Telecommunications Software Company

Application Testing for Financial Services Company

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Application Testing & QA for Cybersecurity Company

Reviews mention Team players

App Testing & PPC for Software Development Company

Application Testing for Academic Research Sharing Website

Industry Experience

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Cleverix - Software Engineering is very responsive

Reviews mention Easy to work with

React Frontend Dev for Engineering Firm

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Average Project Cost Breakdown

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Reviews mention Exceeds expectations

App Testing Services for App Development Company

QA Services for Online Marketplace Platform

Industry Experience

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Reviewed 6 times in the past 6 months

Application QA Services for Real Estate Company

Industry Experience

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Reviewed 1 time in the past 6 months

Industry Experience

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What Clients Have Said

Reviews mention Efficient

Platform Dev & Testing Services for Marketplace Platform

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Mobile App Development for Healthcare Company

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Software Dev Services for IT Company

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Web & Mobile App Dev for Software Development Company

Penetration Testing for Video Chat Services Company

Industry Experience

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Reviews mention Detail-oriented

UX/UI Design for Bank

Industry Experience

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What Clients Have Said

Sourcelab is very responsive

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List of the Top 9 Sofia QA Testers

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