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Top Software Testing Companies for UI/UX Design

13 of 23 software testing companies ranked on evidence in the Q4 2026 edition.

UI and UX design are usually sold together and are not the same thing. UX is the shape of the product — what it does, in what order, and what a user is trying to achieve. UI is the surface: the controls, the visual language, the details of interaction. A product can be beautifully rendered and still ask people to do something illogical.

The most informative question for a provider here is what research they do before drawing anything, and what they do when it contradicts the brief. Teams that go straight to high-fidelity screens produce work that looks decisive and tests badly. Ask to see a project where the research changed the plan.

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Between them, the 23 software testing companies on this page cover web development (19), eCommerce (19), web design (17) and iOS app (17). They also list work in United States of America, United Kingdom, India and Germany. 23 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

13 of 23 software testing companies ranked on evidence held on 6 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

How this is ranked About this edition

All software testing companies 13 ranked SMEs 12 ranked

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TestFort
E-Commerce Development · IT Services · Software 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.
QM
QA Mentor - Software Testing Expert
Mobile App Development · Web Development · Web Design · 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.
Cigniti Technologies
Mobile App Development · Web Development · iOS App · Also in United States of America
Cigniti Technologies is a quality engineering and software testing company headquartered in Hyderabad, India.
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Why #3: ISO 9001, ISO 27001, professional accreditation · Team of 2,100+, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
Maveric Systems Limited
Mobile App Development · Web Development · iOS App · Also in India
Maveric Systems Limited began operating in 2000 and works mainly with banks and fintech firms.
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Why #4: Founded 2000, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
FG
froglogic GmbH
Mobile App Development · Web Development · Web Design · Also in Germany
froglogic GmbH was founded in 2003 by Reginald Stadlbauer and Harri Porten to create a cross-platform tool for automating tests of graphical interfaces, first for the Qt framework.
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Why #5: Founded 2003, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
Testing Circle
Web Development · Web Design · iOS App · Also in United Kingdom
Testing Circle is a London software testing services company. It provides consultancy and supplies testing staff to clients across the UK and Europe, and it has done so since 2005.
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Why #6 (shared): Founded 2005, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
2i Testing
Mobile App Development · Web Development · Web Design · Also in United Kingdom
2i Testing is a software testing and quality assurance consultancy that began in 2005.
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Why #6 (shared): Founded 2005, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
Quantic Lab
Mobile App Development · Web Development · IT Services · Also in Romania
Quantic Lab is an outsourcing company that specialises in quality assurance testing across platforms.
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Why #8: Founded 2006, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
AppSierra
Mobile App Development · Web Development · Web Design · Also in India
AppSierra is an IT services firm that supplies QA, software testing and engineering teams.
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Why #9: ISO 9001, ISO 27001, professional accreditation, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
T
Testbirds
Mobile App Development · Web Development · Web Design · Also in Germany
Testbirds is a crowdtesting company founded in Munich in 2011.
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Why #10: Founded 2011, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
QAwerk
Mobile App Development · Web Development · Web Design · Also in United States of America
QAwerk is an independent software testing agency and QA outsourcing company.
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Why #11: Founded 2015, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
TestingXperts
Web Development · iOS App · E-Commerce Development · Also in United States of America
TestingXperts is a quality assurance and software testing firm.
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Why #12: ISO 9001, ISO 27001, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
Testnomics
Web Development · Web Design · iOS App · Also in United Kingdom
Testnomics is a software testing and quality assurance service provider based in the United Kingdom.
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Why #13: Founded 2018, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
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
Testhouse Ltd
Web Development · Web Design · iOS App · Also in United Kingdom
Testhouse Ltd is a software quality engineering firm. It provides testing, consulting and training, delivered on-site, on-shore or off-shore, either as an outsourced service or on…
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On record: Team of 200+, as stated on its own website, read 5 Oct 2026
AM Webtech Pvt Ltd
Mobile App Development · Web Development · Web Design · Also in India
AM Webtech Pvt Ltd is a software services company headquartered in Indore, India.
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ElmoSoft
Web Development · Web Design · Software 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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Lamia Oy
Mobile App Development · Web Design · iOS App · Also in Finland
Lamia Oy is a Finnish agency that helps companies grow through online commerce.
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makeitright
Web Design · E-Commerce Development · Software Development · 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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Mtest Labs Limited
Web Development · Web Design · iOS App · Also in United Kingdom
Mtest Labs Limited is a software testing consultancy that also sources technical talent for its clients.
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P
Parasoft
Web Development · Web Design · E-Commerce Development · Also in United States of America
Parasoft makes tools that automate software testing and report on code quality.
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Perfecto
Web Development · Web Design · iOS App · Also in United States of America
Perfecto provides a cloud-based environment for testing web and native apps.
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Tesena
Web Development · Web Design · Software Development · Also in Czech Republic
Tesena is a company specialising in software testing and quality engineering.
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Ubertesters
Mobile App Development · iOS App · E-Commerce Development · Also in United States of America
Ubertesters is a managed crowdsourced software testing company.
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Top Software Testing Companies for UI/UX Design

TestFort

QA Mentor - Software Testing Expert

Cigniti Technologies

Maveric Systems Limited

froglogic GmbH

Testing Circle

2i Testing

Quantic Lab

AppSierra

Testbirds

QAwerk

TestingXperts

Testnomics

Testhouse Ltd

AM Webtech Pvt Ltd

ElmoSoft

Lamia Oy

makeitright

Mtest Labs Limited

Parasoft

Perfecto

Tesena

Ubertesters

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