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Top Software Development Companies for Software Testing

62 of 129 software development companies ranked on evidence in the Q4 2026 edition.

Between them, the 129 software development companies on this page cover software development (116), web development (100), web design (99) and UI/UX design (83). They also list work in Lviv, Kyiv, Ivano Frankivs'k, Ukraine and Europe. 129 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

62 of 129 software development 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 development companies 62 ranked SMEs 56 ranked

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GHB Software
Mobile App Development · Software Development · UI/UX Design · Also in Romania
GHB Software is a technology and digital transformation services provider based in Romania. It has operated since 2014, with software development consulting as its main business.
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Why #48 (shared): Founded 2014, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Start Matter
Mobile App Development · Custom Software Development · Software Development · Also in Belarus
Start Matter is a custom software development company founded in 2014.
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Why #48 (shared): Founded 2014, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
PC
Pragmatic Coders
Mobile App Development · Custom Software Development · Web Development · Also in Poland
Polish software company building bespoke software and rescuing struggling projects, with a focus on digital health and fintech
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Why #48 (shared): Founded 2014, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
APRO Software
Mobile App Development · Software Development · Web Development · Also in Belarus
APRO Software is a custom software development company that supplies nearshore outsourcing.
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Why #52 (shared): In business 10+ years · Small team, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Soft Group
Software Development · Web Design · UI/UX Design · Also in Vinnytsia, Ukraine and Ivano Frankivs'k, Ukraine
Soft Group is a software development company that sets up and runs IT teams for clients in Ukraine and other Eastern European countries.
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Why #52 (shared): In business 10+ years · Team of 150+, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
Redentu
Web Development · Web Design · UI/UX Design · Also in Lviv
Redentu is an independent software engineering studio that has operated since 2016.
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Why #54 (shared): Founded 2016, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Q
Qualito
Software Development · Web Design · UI/UX Design · Also in Germany
Qualito is an international software development outsourcing firm founded in 2016.
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Why #54 (shared): Founded 2016, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
j-labs software specialists
Supply Chain, Logistics, and Transport · Energy & Natural Resources · Custom Software Development · Also in Poland
j-labs software specialists is a software house in Poland that places engineers on client projects, either by joining existing teams or by taking on a whole project.
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Why #56: ISO 9001, ISO 27001, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
DataMix
Artificial Intelligence - AI · Mobile App Development · Software Development · Also in Ukraine
Ukrainian software house building web and machine learning applications for start-ups and small and medium-sized businesses
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Why #57 (shared): Founded 2017, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
ApiTree
Mobile App Development · Software Development · Web Development · Also in Czech Republic
ApiTree is a software company that writes custom web and mobile applications for cloud environments and advises on IT.
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Why #57 (shared): Founded 2017, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Thybit
Software Development · Quality Assurance · IT Services · Also in Czech Republic
Thybit is a software company founded in Ostrava in 2019. It works with CTOs, founders and product teams to design, build and scale digital products and complex IT systems, and…
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Why #59: Founded 2019, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Vakoms
Custom Software Development · Software Development · Web Development · Also in Lviv
Vakoms is a software development company with headquarters in London and development facilities in Lviv, Ukraine.
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Why #60: Team of 120+, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
HiTech Service LLC
Mobile App Development · Custom Software Development · Software Development · Also in New York and York
HiTech Service LLC is an IT outsourcing company with an office in the United States and a research and development centre in Ukraine.
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Why #61 (shared): ISO 9001, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
One Logic Soft
Custom Software Development · Software Development · Web Development · Also in Kyiv
One Logic Soft develops custom web and mobile applications for clients around the world.
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Why #61 (shared): HubSpot partner, 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
Clurgo
Mobile App Development · Software Development · Web Design · Also in Poland
Clurgo is a software development company that acts as an in-house team for its clients. Its site describes end-to-end Java-based development.
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On record: Team of 100+, as stated on its own website, read 6 Oct 2026
EL
ESR Labs AG
Artificial Intelligence - AI · Software Development · Web Development · Also in Germany
ESR Labs AG is an embedded systems engineering company that grew up in the automotive industry.
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On record: Team of 140+, as stated on its own website, read 6 Oct 2026
Onwelo
Custom Software Development · ERP Software Development · Software Development · Also in Poland
Onwelo is an IT company whose main work is software development, maintenance and ongoing feature support.
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On record: Team of 350+, as stated on its own website, read 5 Oct 2026
PGS Software S.A.
Mobile App Development · Software Development · Web Development · Also in Poland
PGS Software is a publicly traded software company from Poland.
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On record: Team of 650+, as stated on its own website, read 6 Oct 2026
SERF - Social Enterprise Robotics Firm
Artificial Intelligence - AI · Mobile App Development · Search Engine Optimization · Also in Ukraine
Software development firm of about 55 developers building websites, portals and automation tools for international clients
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On record: Team of 55+, as stated on its own website, read 6 Oct 2026
SolbegSoft
Software Development · Quality Assurance · Frontend · Also in United States of America
SolbegSoft, which also trades as Solbeg, develops custom software and offers outsourcing and consulting.
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Startup Development House
Artificial Intelligence - AI · Mobile App Development · Software Development · Also in Poland
Startup Development House is a custom software and product development company based in Warsaw, Poland.
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On record: Team of 60+, as stated on its own website, read 6 Oct 2026
Accellabs
Mobile App Development · Software Development · Web Development · Also in United States of America
Accellabs is a technology and solutions consulting company that designs and builds custom software for working businesses.
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AG
agiles Group
ERP Software Development · Software Development · IT Services · Also in Germany
agiles Group is an owner-managed software company from the Hanseatic region of Germany.
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On record: Owner-managed
AS
Aionys Software Development
Mobile App Development · Software Development · Web Development · Also in United States of America
Aionys Software Development is a European boutique IT company that handles software projects from start to finish.
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On record: Boutique

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Top Software Development Companies for Software Testing

GHB Software

Start Matter

Pragmatic Coders

APRO Software

Soft Group

Redentu

Qualito

j-labs software specialists

DataMix

ApiTree

Thybit

Vakoms

HiTech Service LLC

One Logic Soft

Clurgo

ESR Labs AG

Onwelo

PGS Software S.A.

SERF - Social Enterprise Robotics Firm

SolbegSoft

Startup Development House

Accellabs

agiles Group

Aionys Software Development

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