Top Software Testing Companies in Sofia

Ratings Updated: August 19, 2026

We verify reviews and evaluate companies so you can choose with confidence. We may earn a fee for some placements. Learn how Clutch ensures trust

Featured

What are Featured Providers?
Simform

4.8 86 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 software development and testing company that offers services including Application Quality Assurance and QA Testing. Across multiple reviews, clients commend Simform for their excellent project management, timely delivery, and effective communication. Approximately 100% of reviewers highlight their responsiveness and commitment, while around 20% suggest minor areas for improvement. Their technical expertise and alignment with client values consistently earn them high praise.

See all 86 projects
3 of 3 reviews are 5 stars

$50,000 – $199,999 avg. project cost

Reviewed 3 times in the past 6 months
In recent reviews, clients praised Simform for their professionalism, responsiveness, and commitment to long-term solutions. One client noted their 'strong communication practices' and timely delivery within budget, while another highlighted the team's proactive approach to understanding project needs. A CTO commended Simform's expertise in software development, emphasizing their ability to manage complex tasks independently. Overall, the sentiment is highly positive, though there are suggestions for improved end-user documentation.
Read 3 Recent Reviews

Was this helpful?

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
Read 13 Reviews

Was this helpful?

Industry Experience

Simform has garnered positive feedback across various industries, showcasing expertise in Education, Hospitality, Information Technology, and Financial Services. Reviews emphasize their strengths in project management, timely delivery, and responsiveness, leading to successful outcomes. Clients appreciate their ability to align with organizational needs, enhance user experiences, and develop scalable solutions. Overall, Simform is well-suited for clients in sectors prioritizing technical development, user-centric designs, and strategic collaboration.
Read All Reviews

Select Industry to see insights

Utilities eCommerce Logistics & Supply Chain Wellness & Fitness Agriculture Media Consulting Human Resources Other industries Construction Legal Gaming Food & Beverages Other Industry Consumer Products Software Business services Arts, entertainment & music Education Real estate Nonprofit Financial services Fitness Information technology Hospitality & leisure Advertising & marketing IT Services Healthcare

Was this helpful?

View projects from:

United States (50) 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)

Was this helpful?
View Profile Visit Website
QualityLogic

4.9 32 reviews

Premier Verified

$5,000+

$25 - $49 / hr

50 - 249

Serves Sofia, Bulgaria

Services provided

100% Application Testing

QualityLogic is a reputable company specializing in Software Quality Assurance and Testing Services, including App Testing and QA Testing. According to client reviews, QualityLogic is praised for their excellent communication and detailed documentation, with approximately 90% of responses highlighting their professional project management and adherence to budget. Clients frequently commend their flexibility and the successful implementation of testing protocols, underscoring QualityLogic's ability to enhance software quality and mitigate risks effectively.

See all 32 projects
1 of 1 reviews is 5 stars

$50,000 – $199,999 avg. project cost

Reviewed 1 time in the past 6 months
Over the past six months, client feedback for QualityLogic reflects a strong positive sentiment, highlighting their effective support in achieving ADA compliance. A notable review from a Whatcom County Government specialist praised QualityLogic for their thorough audit and training, emphasizing their ability to articulate both the 'HOW' and 'WHY' of compliance, which facilitated widespread adoption of accessibility practices. While minor improvements in training scripting were suggested, the overall responsiveness and timely delivery of services were commended.
Read 1 Recent Review

Was this helpful?

20 of 22 Application Testing reviews are 5 stars

$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
Read 22 Reviews

Was this helpful?

Average Project Cost Breakdown

$50,000 to $199,999 (8) $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
Client feedback on QualityLogic highlights a strong sentiment regarding their cost-effectiveness and value for money. Many clients noted that QualityLogic's pricing fits within their budgets while delivering high-quality results. For instance, one client appreciated the 'good value for cost' when selecting them, while another emphasized the 'cost to benefit ratio' as a significant win for their project. Overall, clients expressed satisfaction with the quality of work relative to the investment, reinforcing QualityLogic's reputation for providing substantial value.
Read All Reviews

Was this helpful?

View projects from:

United States (26) 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)

Was this helpful?
View Profile Visit Website
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 dedicated software testing company that offers services like App Testing, QA Testing, and Software Quality Assurance. Across reviews, 100% of clients commend their strong understanding of business contexts and tailored QA solutions, resulting in improved software quality and reduced defect rates. Clients appreciate their timely delivery and seamless integration with internal teams, highlighting BetterQA's commitment to practical outcomes and client-focused service.

See all 64 projects
Reviews mention Exceeds expectations
BetterQA consistently exceeds client expectations, as highlighted in multiple reviews. Clients praised their proactive approach, meticulous attention to detail, and exceptional project management. For instance, one CEO noted significant performance improvements and timely deliverables, while another emphasized BetterQA's thorough testing strategy that enhanced application quality. Clients appreciated their responsiveness and commitment to client satisfaction, ultimately recommending BetterQA for top-tier application management support.

QA & Automation Testing Services for Mobility Solutions Co

5.0 Nov 15, 2023

Throughout our partnership, BetterQA has continuously exceeded our expectations, leaving little room for improvement. Their commitment to quality and efficiency is evident in all aspects of their work.
Read Full Review

Application Testing for Software Company

5.0 Jun 23, 2023

None. BetterQA delivers as promised and even exceeds our expectations.
Read Full Review

Application Testing Services for Retail Company

5.0 Jul 5, 2023

Honestly, we couldn't find anything BetterQA could have done differently. they consistently exceeded our expectations, delivering exceptional testing services that greatly benefited our e-commerce agency. their professionalism, expertise, and commitment to QA were truly remarkable.
Read Full Review

App Mgmt Services for Digital Marketing & Consulting Agency

5.0 Jul 18, 2023

The measurable outcomes from the project were highly impressive. Thanks to BetterQA efforts, our applications experienced a significant performance boost, resulting in faster loading times and improved responsiveness. BetterQA project management was exemplary. They delivered all items on time, adhering to the agreed-upon schedules without any delays. What stood out most about BetterQA was their proactive approach to application management. They anticipated potential issues before they become major problems, preventing any significant disruptions to our services. They consistently exceeded our expectations, and we were more than satisfied with their support.
Read Full Review

Read All Reviews

Was this helpful?

36 of 40 Application Testing reviews are 5 stars

$10,000 – $49,000 avg. project cost

Application Testing PROJECT HIGHLIGHT

QA/Software Testing for Security/Defense Consultancy
4.5 — BetterQA provided QA and software testing services for a security and defense consultancy. The team created a QA strategy and test cases, automated test scripts, and conducted performance and Read more
Read 40 Reviews

Was this helpful?

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
BetterQA is frequently praised for providing excellent value for money, with clients noting that their pricing aligns well with budgets while delivering high-quality services. One client remarked on their 'good value for cost,' while another highlighted that their engagement resulted in significant efficiency improvements. Overall sentiment reflects satisfaction with the affordability and effectiveness of BetterQA's solutions, with multiple clients expressing a willingness to re-engage due to the perceived return on investment.
Read All Reviews

Was this helpful?

View projects from:

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)

This provider is fluent in 6 languages:

English

Spanish

German

French

Turkish

Romanian

This provider is available in 3 time zones:

Central European Time (CET)

Eastern European Time (EET)

Universal Coordinated Time (UTC)

Was this helpful?
View Profile Visit Website
Cleverix - Software Engineering

5.0 7 reviews

Premier Verified

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

40% Application Testing

30% Mobile App Development

15% UX/UI Design +1 service

15% Web Development

Cleverix - Software Engineering is a specialized software testing company offering services like QA Testing, Software Quality Assurance, and Development Testing. Across their reviews, 100% of clients highlight their technical expertise, proactive communication, and seamless integration into existing workflows. Clients consistently commend their ability to deliver projects on time, improve testing coverage, and enhance product quality, with no areas for improvement noted.

See all 7 projects
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.
Read Full Review

Read All Reviews

Was this helpful?
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
Read 6 Reviews

Was this helpful?

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.
Read All Reviews

Select Industry to see insights

Logistics & Supply Chain Consumer Products Information technology

Was this helpful?
View projects from:

United States (3) Bulgaria (2) England (1)

This provider is fluent in 3 languages:

Bulgarian

English

German

This provider is available in 3 time zones:

Greenwich Mean Time (GMT)

Eastern European Time (EET)

Eastern Standard Time (EST)

Was this helpful?
View Profile Visit Website
Scalefocus

4.9 39 reviews

Premier Verified

$1,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

25% Custom Software Development

20% AI Development +3 services

20% Mobile App Development

15% Web Development

10% IT Managed Services

Scalefocus is a technology solutions company that specializes in software development, digital transformation, and system integration. Overall feedback is overwhelmingly positive, with clients praising their technical expertise, agile project management, and ability to integrate as part of internal teams. Approximately 90% of reviews highlight Scalefocus's strong engineering capabilities and seamless collaboration, while 80% note their commitment to understanding client needs and delivering tailored solutions that enhance operational efficiency and scalability.

See all 39 projects
3 of 3 reviews are 5 stars

$200,000 – $999,999 avg. project cost

Reviewed 3 times in the past 6 months
Recent reviews of Scalefocus reflect a strong overall sentiment, with clients praising their technical expertise, collaborative approach, and innovative solutions. A CTO highlighted the 'LLM-as-a-Judge' evaluation methodology as a standout feature that adds lasting value. The CEO of Bedrock Learning commended Scalefocus for their exceptional UX/UI design and seamless integration with internal teams, leading to a mission-critical platform. Overall, clients noted high satisfaction with delivery timelines and adaptability, despite initial alignment challenges.
Read 3 Recent Reviews

Was this helpful?

Average Project Cost Breakdown

$50,000 to $199,999 (6) $200,000 to $999,999 (5) Less than $10,000 (2) $10,000 to $49,000 (2)

What Clients Have Said
Clients consistently express satisfaction with Scalefocus's cost-effectiveness and value for money. For instance, one CTO noted that Scalefocus provided 'good value for cost' and aligned with their budget. Another client emphasized that Scalefocus's services exceeded expectations, leading to significant operational improvements without excessive costs. Overall, the sentiment reflects a strong appreciation for the balance between quality and pricing, with many clients indicating that Scalefocus has become a trusted partner due to their reasonable rates and high-quality deliverables.
Read All Reviews

Was this helpful?

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

Was this helpful?
View projects from:

Bulgaria (11) England (9) Germany (4) Switzerland (3) Belgium (2) United States (2) Canada (1) France (1) Albania (1) Jordan (1) Netherlands (1) Sweden (1) Austria (1)

This provider is fluent in 2 languages:

English

German

This provider is available in 4 time zones:

Greenwich Mean Time (GMT)

Central European Time (CET)

Eastern European Time (EET)

Universal Coordinated Time (UTC)

Was this helpful?
View Profile Visit Website
Featured

What are Featured Providers?
QAlified

4.9 21 reviews

Verified

Undisclosed

$25 - $49 / hr

10 - 49

Serves Sofia, Bulgaria

Services provided

100% Application Testing

QAlified is a distinguished software testing company specializing in Application Quality Assurance, Software QA, and Testing Services. With 100% positive feedback across reviews, clients commend their reliability, precision, and effective project management. Notably, 85% of reviewers highlight their excellent communication and adaptability, while 70% appreciate the alignment with company values and culture.

See all 21 projects
Reviews mention Timely
Overall, client feedback regarding QAlified's timeliness is highly positive, with multiple reviews highlighting their consistent on-time delivery. For instance, one client noted, "Everything was on time, and QAlified was consistently available," while another emphasized, "Deliverables were consistently provided on time, with clear communication around progress." Additionally, a client praised their flexibility and prompt reporting, stating, "Super flexible, always on time with reporting in testing feedback." This positive sentiment reflects QAlified's commitment to meeting deadlines and responding effectively to client needs.

Mobile App Testing Services for Digital Identity Company

5.0 Aug 7, 2024

Super flexible, always on time with reporting in testing feedback, high quality of reports. We appreciate their flexibility and turnaround time.
Read Full Review

QA & Performance Testing for Geospatial Solutions Company

5.0 Mar 15, 2023

QAlified efficiently integrated into the team's Agile product development process with rolling releases. The testers responded timely and efficiently.
Read Full Review

Logistics System Testing for Computer Software Company

5.0 Feb 3, 2021

We communicated via email. We also had the advantage of being very close — we were one building away, so we could arrange meetings quickly. We divided the project into tasks, and they delivered on time.
Read Full Review

Usability Testing for Music Education Application

5.0 Feb 2, 2021

They delivered perfectly on time every time. We had in-person meetings and we also used email. During the process, we were in contact pretty much every day.
Read Full Review

QA Services for Health Management Solutions Company

5.0 Jun 13, 2025

Everything was on time, and QAlified was consistently available.
Read Full Review

Read All Reviews

Was this helpful?

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 indicate a highly positive sentiment towards QAlified, particularly regarding their quality assurance services. Clients highlighted the company's effective communication, adaptability, and thorough testing processes, which led to improved site stability and fewer production issues. Notably, one client praised their transparency and cultural alignment, stating that QAlified felt like an extension of their internal team. Suggestions for improvement included exploring test automation earlier in projects, reflecting a desire for continued evolution rather than criticism.
Read 1 Recent Review

Was this helpful?

Industry Experience

QAlified has demonstrated expertise across various industries, notably in healthcare, media, technology, and manufacturing. Clients commend their rigorous QA processes, effective communication, and the ability to deliver quality results on time. In healthcare, they excelled in performance and usability testing, while in media and technology, they showcased strong capabilities in security audits and automated testing. Overall, feedback reflects positive sentiment and a strong alignment of values, making QAlified a suitable partner for organizations seeking reliable QA services.
Read All Reviews

Select Industry to see insights

Information technology Advertising & marketing Media Software Manufacturing Education Government Retail IT Services

Was this helpful?

View projects from:

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

Was this helpful?
View Profile Visit Website
Reactive Hive Ltd

5.0 11 reviews

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

100% Application Testing

Reactive Hive Ltd is a specialized software quality assurance company focused on application and software testing services, including QA testing, software validation, and app quality testing. The reviews highlight a 100% positive feedback rate, with clients consistently praising their seamless integration, detailed testing processes, and expertise in e-commerce platforms like Magento. Notably, 80% of reviewers emphasize their excellent communication and project management skills, fostering efficient workflows and rapid onboarding.

See all 11 projects

Industry Experience

Reactive Hive Ltd demonstrates notable expertise in the eCommerce sector, focusing on QA and testing for platforms like Magento and Adobe Commerce. Clients commend their seamless integration, strong communication, and ability to deliver high-quality testing results. Additionally, they have expanded their services to other industries, including retail and B2B marketplaces, where their attention to detail and adaptability have been praised. Overall, Reactive Hive is particularly well-regarded in eCommerce, where their strengths significantly enhance project outcomes.
Read All Reviews

Select Industry to see insights

IT Services Retail Software eCommerce

Was this helpful?

View projects from:

Ukraine (2) United States (2) England (2) Australia (1) Bulgaria (1) Germany (1) Netherlands (1)

Was this helpful?

$1,337 Fast & focused QA checks $2,337 Deeper, structured testing $4,242 Full coverage & ongoing QA support

Monthly QA Subscription
QA Subscriptions offer monthly testing hours designed to reduce your team’s QA workload and ensure robust coverage when you need it most. No long-term commitment required: choose a package that fits your needs. Scale your existing testing team and bridge capacity gaps with short-term support. Prioritise quality during peak delivery periods.
View Packages

Was this helpful?

Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Reviewers in Sofia emphasize Reactive Hive Ltd's expertise in QA testing, bug fixing, and tool proficiency. They value the company's responsiveness, clear communication, and ability to work smoothly within existing team workflows on complex projects.
Read Local Reviews

Was this helpful?

View Profile

Share your project goals, and we’ll connect you with verified partners who fit your budget and timeline.

Get My Matches

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 software development company specializing in software quality assurance and application testing services. They are noted for their effective project management and high-quality deliverables, receiving 100% positive feedback across reviews. Clients appreciate their ability to handle complex tasks efficiently, with 80% of reviews highlighting their responsiveness and adaptability to client needs.

See all 9 projects

5 of 5 Application Testing reviews are 5 stars

$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
Read 5 Reviews

Was this helpful?

Industry Experience

App Streams Ltd has demonstrated expertise across diverse sectors, including healthcare, information technology, consumer products, manufacturing, automotive, and media. Clients commend their exceptional project management, strong culture fit, and the ability to deliver high-quality, reliable solutions promptly. In healthcare, their contributions significantly enhanced product usability and operational efficiency. In IT and consumer products, they excelled in developing interactive platforms. Overall, clients express high satisfaction, indicating a strong fit for projects requiring innovative development solutions in these industries.
Read All Reviews

Select Industry to see insights

Software Other industries Information technology Consumer products & services Healthcare Manufacturing Automotive Media

Was this helpful?

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 report that App Streams Ltd offers excellent value for money, with many highlighting that their pricing aligns well with budget expectations. For instance, one client noted, 'Great culture fit' and 'Good value for cost,' while another remarked on their 'exceptional project management' and timely delivery of services. Overall, the sentiment is overwhelmingly positive, with clients expressing satisfaction with the quality of work relative to the cost, making App Streams a preferred partner for various projects.
Read All Reviews

Was this helpful?

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.
Get in Touch

Was this helpful?

View Profile
Wiser Technology

4.9 42 reviews

$25,000+

$50 - $99 / 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 Testing Services, including Software Testing and Software Quality Assurance. Reviews indicate a high level of satisfaction with their services, with 100% of feedback highlighting their skilled and dedicated QA testers and efficient project management. Clients appreciate their seamless integration and commitment to meeting project timelines.

See all 42 projects
Reviews mention Open to feedback
Clients have consistently praised Wiser Technology for their openness to feedback and collaborative approach. For instance, one client emphasized that ITIDO is 'open to both receiving and sharing feedback for the improvement of the final product,' highlighting effective communication and responsiveness. Another review noted their 'transparent and open' project management style, which fosters a positive working relationship. Overall, the sentiment regarding their receptiveness to feedback is highly positive, indicating a strong commitment to client satisfaction.

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.
Read Full Review

Read All Reviews

Was this helpful?
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
Read 2 Reviews

Was this helpful?

Industry Experience

Wiser Technology has demonstrable expertise in various industries, including telecommunications, information technology, and healthcare. Client feedback highlights strengths in software development, project management, and responsiveness, with notable success in delivering custom solutions and innovations. In telecommunications, they excelled in mobile app development, while in healthcare, their contributions enhanced product functionality. Overall, their commitment to excellence is acknowledged across industries, making them a suitable partner for diverse projects.
Read All Reviews

Select Industry to see insights

Other industries Telecommunications Information technology Real estate Media Financial services Business services Education Advertising & marketing Energy & natural resources Healthcare IT Services

Was this helpful?

Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

4.9

Cost

4.7

Willing to Refer

5.0

Reviewers in Sofia highlight Wiser Technology's strong technical skills in software development, cloud infrastructure, and UI/UX design. Clients appreciate their flexibility, attention to detail, and consistent delivery of functional, user-friendly solutions for demanding projects like streaming platforms and healthcare apps.
Read Local Reviews

Was this helpful?
View Profile
Stanga

4.8 9 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

Stanga is a software testing and development company with a strong focus on Application Testing and Software Quality Assurance. Reviews highlight a 100% positive feedback rate, praising their technical expertise, seamless team integration, and proactive problem-solving. Clients commend their efficient project management and adaptability, underscoring their commitment to delivering high-quality, cost-effective solutions.

See all 9 projects
Reviews mention Well-organized projects
Clients have expressed a positive sentiment regarding Stanga1's project organization, highlighting their effective project management and communication processes. One client noted, "Stanga1 performs well; their project management and accounting processes are almost always fast and accurate," which indicates a well-established organization. Overall, the feedback suggests that Stanga1 successfully integrates into teams, contributing to well-organized projects that meet performance standards.

IT Staff Augmentation for Apartment Booking Company

5.0 Sep 8, 2022

Stanga1 performs well; their project management and accounting processes are almost always fast and accurate. Overall, they have a well-established organization. We use Slack and Email to communicate.
Read Full Review

Read All Reviews

Was this helpful?
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.
Read All Reviews

Select Industry to see insights

Software Healthcare Automotive Hospitality & leisure

Was this helpful?

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
Read Similar Reviews

Was this helpful?

Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Reviewers in Sofia commend Stanga's technical proficiency across full-stack, DevOps, and IoT solutions, emphasizing their seamless team collaboration and proactive problem-solving. Clients value their adaptability and consistent delivery of high-quality, scalable platforms that optimize operations and revenue.
Read Local Reviews

Was this helpful?
View Profile
NATEK

5.0 5 reviews

$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

NATEK is an IT services company specializing in IT staffing, recruitment, and project management solutions. Across multiple reviews, clients highlight NATEK’s speed, flexibility, and effective communication, with 100% of reviewers noting their timely delivery and high-quality recruitment process. The company is praised for its strong cultural alignment and proactive approach to meeting client needs, with no significant areas for improvement mentioned.

See all 5 projects
Reviews mention Timely
Overall, client sentiment regarding NATEK's timeliness is highly positive. Clients consistently highlight the company's ability to deliver on time and respond promptly to needs. For instance, one client noted, 'NATEK delivers on time' and another emphasized 'very timely and professional communication.' Additionally, the recruitment speed was praised as 'fast delivery,' demonstrating NATEK's effectiveness in meeting project deadlines and adapting to client demands.

Recruitment Process Outsourcing for Software Development Co

5.0 Mar 26, 2026

NATEK delivers on time. We communicate with NATEK via email and messaging apps. NATEK's fast delivery is impressive.
Read Full Review

Project Management Services for IT Company

5.0 Mar 30, 2026

Very timely and professional communication, each request and each case has been handled very professionally. The provider ensured that deliverables were met as per the set scope, demonstrating strong collaboration and effective resolution of any issues.
Read Full Review

IT Staff Augmentation for Financial Services Company

5.0 Apr 8, 2026

NATEK demonstrates great effectiveness in acquiring talents with strictly defined, often niche technological profiles, which allows us to deliver key projects on time. Over the years of our joint operations, the company has repeatedly proven that it perfectly understands the specificity, dynamics, as well as strict technological and security requirements of the banking sector.
Read Full Review

Application Management & Support for Retail Company

5.0 Apr 13, 2026

The deadlines are met, communication is effective and on time, teamwork also on good level.
Read Full Review

Read All Reviews

Was this helpful?
5 of 5 reviews are 5 stars

$200,000 – $999,999 avg. project cost

Reviewed 5 times in the past 6 months
In recent reviews, clients expressed high satisfaction with NATEK's performance, highlighting their effective communication, timely project delivery, and strong cultural alignment. For instance, a Credit Agricole representative praised NATEK for their proactive approach and high competence of IT specialists. Similarly, an HPE manager noted their professionalism and strong collaboration. Overall, clients appreciate NATEK's flexibility and responsiveness, with no significant areas for improvement identified in the last six months.
Read 5 Recent Reviews

Was this helpful?

Average Project Cost Breakdown

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

What Clients Have Said
Clients consistently highlight NATEK's strong value for cost, praising their effective recruitment processes and high-quality IT specialists. One client noted, 'Good value for cost,' while another emphasized their 'fast delivery' and 'flexibility.' Overall, the sentiment is positive, with clients appreciating the timely communication and the alignment of NATEK's services with their project needs, indicating a favorable perception of the company's pricing relative to the quality of service provided.
Read All Reviews

Was this helpful?

Review Rating from Clients

5.0/5.0

Quality

4.5

Schedule

5.0

Cost

4.8

Willing to Refer

5.0

Reviewers in Sofia highlight NATEK's quick and reliable recruitment services, successful hires, and seamless project execution, reflecting their expertise in staffing and project delivery.
Read Local Reviews

Was this helpful?
View Profile
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 company specializing in Application Testing, specifically in security and penetration testing services. They are highly commended for their professional project management and efficient communication, consistently delivering quality work on time and within budget. Ninety percent of reviewers praise their reliability and technical expertise, although some suggest implementing a post-remediation verification phase.

See all 13 projects
Reviews mention Personable
Clients consistently describe SoCyber as personable and client-centric, highlighting their open and friendly demeanor. One client noted that SoCyber's team made them feel valued and respected, emphasizing their proactive and collaborative approach. Another review praised their ability to blend technical expertise with genuine human connection, making interactions both productive and enjoyable. Overall, feedback reflects a strong sentiment of satisfaction with the team's attentiveness and responsiveness, reinforcing their commitment to building positive client relationships.

Cybersecurity Services for Software Development Company

5.0 Aug 13, 2023

This customer-focused approach made us feel like a valued partner rather than just a client, further enhancing our satisfaction with their work. Overall, their project management was exemplary, characterized by timely delivery, responsiveness to our needs, and a strong commitment to transparency and collaboration. Their attitude was equally impressive. Throughout the project, they maintained a proactive, collaborative approach, always eager to understand our unique requirements and to tailor their services accordingly.
Read Full Review

Network Segmentation for IT Consulting Firm

5.0 Jul 5, 2023

They are open and friendly, have a professional approach and are able to bring expertise and knowledge to the table.
Read Full Review

Read All Reviews

Was this helpful?
Average Project Cost Breakdown

Less than $10,000 (11)

What Clients Have Said
Clients consistently highlight SoCyber's competitive pricing and strong value for money. For instance, a CTO noted that SoCyber's pricing fit their budget while ensuring a good value for the cost. Similarly, another client appreciated the range of service options from basic to complex, allowing for flexibility in expenditures. Overall, sentiment towards SoCyber's cost-effectiveness is positive, with many clients expressing satisfaction with the quality of services received relative to the investment made.
Read All Reviews

Was this helpful?

View projects from:

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

Was this helpful?

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 focused, efficient approach to cybersecurity projects, including penetration testing and audits. They value the company's responsiveness, thoroughness, and ability to deliver high-quality results within tight deadlines across multiple industries.
Read Local Reviews

Was this helpful?
View Profile
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.

See all 4 projects
Reviews mention High-quality work
Clients commend DSS - Digital and Software Solutions for their high-quality work, particularly in delivering projects on time and meeting customer requirements. One client highlighted the successful delivery of development stories based on DevOps methodology, noting the impressive flexibility and knowledge of the team. The overall sentiment reflects satisfaction with the quality of service provided, with no significant areas for improvement mentioned.

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.
Read Full Review

Read All Reviews

Was this helpful?
Industry Experience

DSS - Digital and Software Solutions has demonstrated expertise across diverse industries, including Banking, Education, and Information Technology. Clients commend their ability to enhance customer satisfaction in banking, develop robust cybersecurity platforms and business process management tools in education, and efficiently deliver DevOps solutions in IT. Overall sentiment reflects strong satisfaction, highlighting strengths in project management, flexibility, and alignment with client values, making them a suitable partner for businesses seeking reliable digital and software solutions.
Read All Reviews

Select Industry to see insights

Information technology Banks Research

Was this helpful?

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. A banking department noted their selection was driven by 'pricing fit our budget' and 'good value for cost.' Similarly, a university professor emphasized their 'pricing fits our budget' and 'good value for cost.' Overall, the sentiment reflects satisfaction with both the affordability and the quality of services provided.
Read All Reviews

Was this helpful?

Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Local clients praise DSS for their expertise in developing complex banking and cybersecurity solutions, emphasizing timely delivery, flexibility, and tailored approaches that meet diverse project needs.
Read Local Reviews

Was this helpful?
View Profile
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 known for designing and developing applications from scratch. Positive feedback highlights their client-focused approach and competitive pricing, with 100% of reviewers noting satisfaction with the project's outcome and the company's responsiveness. However, there's a suggestion for improved advertising to enhance local recognition.

See all 1 projects

Industry Experience

MyApp.BG has demonstrated expertise in the Other Industry, particularly in application development for health-related platforms. Clients have praised their ability to bring ideas to life, highlighting strengths in project management, responsiveness, and competitive pricing. The overall sentiment is positive, with successful outcomes reported, such as profitable app sales. Potential clients in the health and wellness sector may find them especially suitable for projects requiring custom software development.
Read All Reviews

Select Industry to see insights

Other Industry

Was this helpful?

Average Project Cost Breakdown

What Clients Have Said
Clients express a positive sentiment regarding MyApp.BG's overall cost and value for money. One reviewer noted the company's 'good prices' while highlighting their responsiveness and effective communication. The successful sale of an application developed by MyApp.BG further underscores the perceived value, indicating a strong return on investment. However, some clients suggest that improved advertising could enhance the company's visibility and attract more potential customers.
Read All Reviews

Was this helpful?

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

Sofia, Bulgaria

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

See All Locations (3)

Was this helpful?

View Profile
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.
Read more

Sofia, Bulgaria

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

+447779246741

See All Locations (2)

Was this helpful?

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

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.
Get in Touch

Was this helpful?

View Profile
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.
Read more

View Profile
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.

See all 2 projects

View Profile
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
Read more

Sofia, Bulgaria

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

See All Locations (4)

Was this helpful?

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile
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.
Read more

View Profile

Tell us what you need — we’ll match you with top agencies in minutes.

Get My Matches

Why Trust Clutch

At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.

Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.

Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.

We evaluate service providers using a structured methodology that combines:

In-depth client interviews and ratings
Comprehensive project details
Market presence
Portfolio examples and industry recognition

This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.

Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.

We take fraud seriously. Providers who violate our guidelines may face lower rankings, restricted visibility, or removal from the platform altogether.

Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.

Top Software Testing Companies in Sofia

List of the Top Sofia QA Testers

Reviewed 3 times in the past 6 months

Development & QA Support for Lifestyle Membership Platform

Industry Experience

Select Industry to see insights

Reviewed 1 time in the past 6 months

Application Testing & QA for Cybersecurity Company

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Exceeds expectations

QA & Automation Testing Services for Mobility Solutions Co

Application Testing for Software Company

Application Testing Services for Retail Company

App Mgmt Services for Digital Marketing & Consulting Agency

QA/Software Testing for Security/Defense Consultancy

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Innovative

UX/UI Design for SaaS Solution Company

Application Testing for Academic Research Sharing Website

Industry Experience

Select Industry to see insights

Reviewed 3 times in the past 6 months

Average Project Cost Breakdown

What Clients Have Said

Scalefocus is very responsive

Reviews mention Timely

Mobile App Testing Services for Digital Identity Company

QA & Performance Testing for Geospatial Solutions Company

Logistics System Testing for Computer Software Company

Usability Testing for Music Education Application

QA Services for Health Management Solutions Company

Reviewed 1 time in the past 6 months

Industry Experience

Select Industry to see insights

Industry Experience

Select Industry to see insights

Monthly QA Subscription

Mobile App Development for Healthcare Company

Industry Experience

Select Industry to see insights

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

Software Dev Services for IT Company

Industry Experience

Select Industry to see insights

Reviews mention Well-organized projects

IT Staff Augmentation for Apartment Booking Company

Industry Experience

Select Industry to see insights

Web & Mobile App Dev for Software Development Company

Reviews mention Timely

Recruitment Process Outsourcing for Software Development Co

Project Management Services for IT Company

IT Staff Augmentation for Financial Services Company

Application Management & Support for Retail Company

Reviewed 5 times in the past 6 months

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Personable

Cybersecurity Services for Software Development Company

Network Segmentation for IT Consulting Firm

Average Project Cost Breakdown

What Clients Have Said

Reviews mention High-quality work

Custom Software Development for IT Services Co

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Sourcelab is very responsive

Tell us what you need — we’ll match you with top agencies in minutes.