Top Software Testing Companies for Software Testing

Between them, the 27 software testing companies on this page cover software development (15), quality assurance (13), eCommerce (13) and web development (12). 27 of them have written a profile you can read before you get in touch.

1. 1

   

   TestFort

   Software Development · Quality Assurance · E-Commerce Development · Also in United States of America

   TestFort is a software testing company that has operated since 2001. It tests applications before release and also tests the AI features built into products.

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   Why #1: Founded 2001 · ISO 27001, as stated on its own website, read 6 Oct 2026

   Not yet on record: client reviews, vetting.

2. 2

   QM

   QA Mentor - Software Testing Expert

   Mobile App Development · Software Development · Web Development · Also in United States of America

   QA Mentor is an independent software testing company headquartered in New York.

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   Why #2: Founded 2010 · ISO 9001, ISO 27001, professional accreditation · Placed below first here: a listing leads at most 5 rankings, as stated on its own website, read 6 Oct 2026

   Not yet on record: client reviews, vetting.

3. 3

   

   51Testing - Independent Software Testing Company

   Financial Services · Information Technology · eCommerce · Also in Shanghai and Bath

   51Testing is an independent software testing company headquartered in Shanghai, China. It supplies quality assurance testers and testing services to companies in China and abroad.

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   Why #3: Founded 2004 · ISO 9001, ISO 27001, professional accreditation · Placed below first here: a listing leads at most 5 rankings, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

4. 4

   

   QA InfoTech - Your Software Testing Partner

   Mobile App Development · Custom Software Development · Search Engine Optimization · Also in Bengaluru, India and Pune

   QA InfoTech - Your Software Testing Partner is an independent software quality assurance and testing company.

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   Why #4: Founded 2003 · ISO 9001, ISO 27001, professional accreditation · Placed below first here: a listing leads at most 5 rankings, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

5. 5

   2T

   2i Testing

   Web Development · Web Design · IT Services · Also in United Kingdom

   2i Testing provides independent software testing and quality assurance consultancy, mainly for UK financial services and public bodies

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   Why #5: Founded 2005 · Team of 100+, as stated on its own website, read 6 Oct 2026

   Not yet on record: client reviews, vetting.

6. 6

   

   Applause GmbH

   Software Development · IT Services · IT Outsourcing · Also in Germany

   Applause GmbH is the German arm of Applause, a software testing company that began as uTest in 2007.

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   Why #6: Founded 2007, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

7. 7

   T

   Testbirds

   Mobile App Development · Software Development · Web Development · Also in Germany

   Testbirds is a crowdtesting company founded in Munich in 2011.

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   Why #7: Founded 2011, as stated on its own website, read 6 Oct 2026

   Not yet on record: client reviews, vetting.

8. 8

   

   Testlio

   Quality Assurance · IT Services · IT Solution · Also in United States of America

   Testlio provides software testing through a managed community of testers around the world.

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   Why #8: Founded 2013, as stated on its own website, read 6 Oct 2026

   Not yet on record: client reviews, vetting.

9. 9

   

   WHYTTEST

   Video Games Development · Software Development · Quality Assurance · Also in Romania

   WHYTTEST is an outsourced testing company headquartered in Bucharest, Romania, with a second office in Belgrade, Serbia. It has operated since 2014.

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   Why #9: Founded 2014, as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

10. 10

    

    QAwerk

    Mobile App Development · Software Development · Quality Assurance · Also in United States of America

    QAwerk is an independent software testing agency and QA outsourcing company.

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    Why #10: Founded 2015, as stated on its own website, read 6 Oct 2026

    Not yet on record: client reviews, vetting.

11. 11

    RG

    ReTest GmbH

    Software Development · Quality Assurance · E-Commerce Development · Also in Germany

    ReTest GmbH makes software for automating tests of graphical user interfaces. The company was founded in 2017 with the aim of making this kind of testing easier and smarter.

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    Why #11: Founded 2017, as stated on its own website, read 6 Oct 2026

    Not yet on record: client reviews, vetting.

12. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
13. –

    

    AIQA Technologies

    Software Development · Quality Assurance · E-Commerce Development · Also in Poland

    AIQA Technologies makes a tool for web projects that already run automated tests. It targets the long end-to-end regression run that teams repeat each time the code changes.

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14. –

    B

    BrowserStack

    Web Development · Web Design · IT Services · Also in India

    BrowserStack is a software testing platform that gives development teams access to real browsers, operating systems and phones for checking websites and mobile apps.

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15. –

    

    BugFinders

    Mobile App Development · Software Development · Web Development · Also in United Kingdom

    BugFinders is a crowdsourced software testing company. It tests websites and mobile apps that customers use, drawing on a community of more than 55,000 professional testers.

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16. –

    

    Digivante

    Search Engine Optimization · Quality Assurance · Web Development · Also in United Kingdom

    Digivante helps organisations test and improve their digital services.

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17. –

    

    ditCraft

    Financial Services · Information Technology · Automation

    With our unique Software Testing as a Service approach we enable companies to deliver products with efficiency and confidence at a lower cost A solid QA strategy is the first step…

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18. –

    

    Divine Cloudland Services

    Information Technology

    Our team will work together to give you the best Software Testing services We are a boutique software testing firm with a wide berth of varying types of software testers We believe…

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19. –

    

    ElmoSoft

    Custom Software Development · Software Development · Web Development · Also in Tallinn

    ElmoSoft is a software company that builds and tests web and mobile products, with a focus on fintech and software-as-a-service businesses.

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20. –

    

    Exactest

    Quality Assurance · Automation · Recommendations

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21. –

    

    Fleek IT Solutions

    Advertising & Marketing · eCommerce · Android

    Why Fleek IT Solutions? Software testing partner in delivering a high quality product at the most affordable cost that drives revenue and makes you more reliable and profitable.

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22. –

    

    Iterators LLC

    Advertising & Marketing · Financial Services · Automation · Also in Massachusetts and Boston

    Our mission is to work with companies needing quality software testing services, and we do this every day with our diverse and inclusive workforce

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23. –

    

    makeitright

    Software Development · Quality Assurance · Web Design · Also in Poland

    makeitright is a Polish IT consultancy formed in 2013 by specialists in change management within IT environments. It builds on that background to offer process and project work.

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24. –

    SL

    Sauce Labs

    Web Development · Web Design · IT Services · Also in United States of America

    Sauce Labs provides a cloud platform where development and quality teams test websites and apps across many browsers, operating systems and devices.

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25. –

    

    SnoopGame QA

    Video Games Development · Software Development · Quality Assurance · Also in Ukraine

    SnoopGame QA is a quality assurance company that tests video games. It began as a team working on one project and grew into an international games-focused QA lab.

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