Top QA & Software Testing Firms

Releases that break checkout, a mobile app that crashes on older Android phones, an API that slows under load: these are the failures QA and software testing companies are paid to catch first. They plan test strategy, write and run manual test cases, build automated suites in Selenium, Playwright, Cypress or Appium, and run performance, security and accessibility tests. Software teams hire them when developers are testing their own code, when release cycles are speeding up, before a major launch, or when an audit demands documented testing.

When comparing the firms below, look at the kinds of applications they test, the automation frameworks they work in, and whether testers join your sprints or work from a separate queue.

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We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

4,561 Companies

List of the Best QA & Software Testing Agencies

4orce-tech
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4ORCE Tech is a software company that prioritizes engineering, offering solutions in architecture, development, automation, DevOps, and AI. We create strong and scalable platforms tailored for enterprise-level settings in sectors such as finance, logistics, government, telecommunications, and SaaS.
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+6 Services
10% Custom Web Application Development
4% Mobile App Development (iOS & Android)
8% Backend Development
5% Frontend Development
AI Summary
“4ORCE Tech specializes in engineering-driven software solutions, delivering scalable platforms across finance, logistics, government, telecom, and SaaS with expertise in architecture, development, automation, DevOps, and AI.”
Codefex
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We transform your concepts into tangible results! Our team creates code and brings ideas to life, integrating technology into sophisticated experiences, robust platforms, and effective solutions tailored specifically for you. Our skilled developers specialize in various fields, including:
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+7 Services
8% Mobile App Development (iOS & Android)
7% QA & Software Testing
11% Custom Web Application Development
7% API Development & Integration
AI Summary
“Codefex specializes in transforming ideas into practical solutions by developing sophisticated platforms and tailored software, leveraging expertise in diverse development fields to integrate advanced technology.”
LogaTech
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Your all-in-one digital partner. We create, develop, and enhance your online presence with professional expertise.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+2 Services
15% Custom Web Application Development
5% QA & Software Testing
8% E-Commerce Development
12% Mobile App Development (iOS & Android)
AI Summary
“LogaTech specializes in providing comprehensive digital solutions, offering creation, development, and enhancement services to strengthen and optimize clients' online presence professionally.”
Bizlin Technologies
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Bizlin Technologies is a contemporary software development firm specializing in high-performance mobile and web applications for startups, small to medium-sized enterprises (SMEs), and large corporations. We prioritize creating scalable, user-focused digital products characterized by clean architect
Highlights
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+4 Services
8% Custom Web Application Development
8% Mobile App Development (iOS & Android)
7% Frontend Development
8% Backend Development
AI Summary
“Bizlin Technologies delivers scalable, user-centric mobile and web solutions across diverse platforms, emphasizing clean architecture, reliability, and efficient development for startups to large enterprises.”
Zinios Technologies
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We are a technology and creative consultancy dedicated to assisting enterprises and start-ups in their digital transformation through a collaborative approach as a design and technology partner, focusing on product and application design and development. Our stronghold lies in our proficiency with w
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Bengaluru, Karnataka, In
Services Provided+5 Services
12% Custom Web Application Development
8% Mobile App Development (iOS & Android)
7% E-Commerce Development
4% QA & Software Testing
AI Summary
“Zinios Technologies is a Bangalore-based consultancy delivering digital transformation through custom software, UX/UI design, IT staff augmentation, and emerging technologies like AI, AR/VR, and IoT.”
Nexel Byte Limited
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Nexel Byte is a software development firm located in the UK, focusing on digital transformation via scalable web and mobile solutions. Our range of services includes custom software development, mobile and web application design, QA testing, DevOps optimization, and UI/UX design, all aimed at improv
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+2 Services
25% Custom Web Application Development
20% Mobile App Development (iOS & Android)
5% QA & Software Testing
20% Product UX Strategy
AI Summary
“Nexel Byte Limited is a UK-based software firm delivering scalable web and mobile solutions, specializing in custom development, QA, DevOps, and UI/UX design to enhance business productivity.”
djangsters GmbH
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We turn IT projects into enjoyable experiences rather than intimidating ones! djangsters GmbH is an IT consulting firm based in Cologne, Germany. Founded in 2013, we initially specialized in web development using Python and Django, which inspired our name. Over the years, we have expanded our team a
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Services Provided+4 Services
15% Custom Web Application Development
10% API Development & Integration
5% Legacy System Modernization
3% QA & Software Testing
AI Summary
“djangsters GmbH is a Cologne-based IT consulting firm specializing in comprehensive web development, backend, frontend, databases, DevOps, and infrastructure services since 2013.”
Kasolet
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About Kasolet: Kasolet is a forward-thinking IT firm that focuses on corporate-level solutions. Our skilled team of developers and engineers is committed to effective development and completing projects on time. Our Services: Why Choose Kasolet: Expertise: Our knowledgeable team provides high-qualit
Highlights
$10,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+1 Services
24% IT Staff Augmentation
10% Other IT Consulting and SI
28% Custom Web Application Development
5% QA & Software Testing
AI Summary
“Kasolet is an IT company delivering customized, reliable corporate solutions with dedicated expertise, client collaboration, and efficient project completion to advance business technology needs.”
Residence Of Code
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We are a comprehensive outsourcing software development firm that provides a variety of services throughout your application's lifecycle. Our offerings include UX/UI design and branding, development, quality assurance testing, project management, system and application support, as well as monitoring
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Vogosca, Federation Of Bosnia And Herzegovina, Ba
Services Provided+10 Services
3% Blockchain & Web3 Development
9% Custom Web Application Development
4% E-Commerce Development
6% Mobile App Development (iOS & Android)
AI Summary
“Residence Of Code is an outsourcing software development firm offering end-to-end services including UX/UI design, development, QA testing, project management, and ongoing application support and maintenance.”
Metisora
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Metisora.ai is a tech hub focused on creating intelligent tools. Our mission is to develop AI solutions that effectively accomplish tasks. Located in Poland and catering to a worldwide audience, we specialize in AI product development and assist businesses in incorporating intelligent automation int
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Wroclaw, Pl
Services Provided+4 Services
20% Custom Web Application Development
13% Mobile App Development (iOS & Android)
13% Backend Development
5% QA & Software Testing
AI Summary
“Metisora.ai, based in Poland, develops AI-driven products and solutions focusing on intelligent automation, scalable cloud infrastructure, and seamless user-friendly technology for global clients.”

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Top QA & Software Testing Firms

List of the Best QA & Software Testing Agencies

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