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.

How this list is built

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

ESB Technologies(formerly The ESB Corporation)
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ESB Technologies, previously known as The ESB Corporation, is a minority-owned company specializing in software development, staff augmentation, and IT staffing. We collaborate with clients across various industries to deliver multi-platform application solutions. Our headquarters is situated in Aus
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Round Rock, Texas, Us
Services Provided+7 Services
14% API Development & Integration
15% Mobile App Development (iOS & Android)
5% QA & Software Testing
10% Other IT Consulting and SI
AI Summary
“ESB Technologies, a minority-owned firm in Austin, TX, delivers software development, IT staffing, and multi-platform solutions across the US and Canada, emphasizing quality service and client success.”
Herzlin Web Development & UX UI Design Agency
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We are a custom software development firm focused on mobile app and UX development, with partners located in London, Barcelona, and Argentina.
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Barcelona, Catalonia, Es
Services Provided+8 Services
15% Custom Web Application Development
25% Mobile App Development (iOS & Android)
5% E-Commerce Development
5% QA & Software Testing
AI Summary
“Herzlin is a custom software development agency specializing in mobile app creation and UX/UI design, serving clients globally with offices in London, Barcelona, and Argentina.”
Silqen Software Pvt Ltd
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At Silqen, we are dedicated to remaining at the forefront of innovation and delivering cutting-edge solutions to our customers. We provide IT, software, and digital marketing services to optimize your business processes. Our tailor-made software solutions cater to the specific requirements of each c
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Bengaluru, Karnataka, In
Services Provided+7 Services
6% Mobile App Development (iOS & Android)
4% QA & Software Testing
8% Custom Web Application Development
2% CMS Development & Customization
AI Summary
“Silqen Software Pvt Ltd offers customized IT solutions encompassing software development, digital marketing, design, data analytics, and AI-driven cloud consulting to optimize and grow businesses globally.”
Swabhav Venturelabs
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Swabhav Venturelabs is a custom software development and consulting partner dedicated to supporting growing tech companies. Our mission is to tackle complex engineering challenges with our agile and high-performing team of 50 dependable, friendly, and proactive professionals who are equipped to eith
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Mumbai, Maharashtra, In
Services Provided+27 Services
4% Blockchain & Web3 Development
2% Legacy System Modernization
5% Backend Development
3% SaaS Product Development
AI Summary
“Swabhav Venturelabs delivers expert custom software development, AI-driven automation, cloud-native solutions, and strategic consulting, enabling digital acceleration and robust technology transformations for growing tech firms.”
Uxigen
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We assist companies in turning their ideas into reality through customized online communication solutions. My expertise lies in creating showcase and e-commerce websites, UX/UI design, establishing graphic guidelines, enhancing organic search visibility, as well as auditing and optimizing web perfor
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
Venissieux, Auvergne Rhone Alpes, Fr
Services Provided+4 Services
20% Custom Web Application Development
5% QA & Software Testing
10% Product UX Strategy
9% UX Research & Usability Testing
AI Summary
“Uxigen delivers tailored online communication solutions, specializing in website development, UX/UI design, branding, SEO enhancement, and web performance optimization to elevate clients' digital presence.”
Digital frog
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Digital Frog is an innovative and progressive agency located in the United Kingdom, expertly connecting the realms of digital marketing and software development. With a focus on equipping businesses with cutting-edge technology and strategic digital initiatives, Digital Frog acts as a dedicated part
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+7 Services
13% Custom Web Application Development
10% Mobile App Development (iOS & Android)
3% QA & Software Testing
8% Search Engine Optimization (SEO)
AI Summary
“Digital Frog is a UK-based agency specializing in integrated digital marketing and custom software development, delivering innovative solutions that drive business growth, efficiency, and digital transformation.”
Newroz Technologies FZCO
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Newroz Tech is a technology partner located in the UAE, focusing on fintech solutions, travel platforms, sports engagement technologies, and cloud infrastructure engineering. We assist businesses in designing, developing, and managing scalable digital platforms by integrating product development wit
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+9 Services
14% Custom Web Application Development
4% QA & Software Testing
6% E-Commerce Development
5% Mobile App Development (iOS & Android)
AI Summary
“Newroz Technologies FZCO delivers scalable fintech, travel, and sports digital platforms with cloud-native architecture, robust DevOps, and production-ready infrastructure, supporting businesses from concept through ongoing operations.”
Redfoot
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We focus on permanently enhancing existing software development teams and prefer collaborating with companies that have product owners or managers capable of independently managing their software development lifecycle for long-term projects, products, or services. Build a team that is genuinely your
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
London, England, Gb
Services Provided+4 Services
5% Mobile App Development (iOS & Android)
25% Custom Web Application Development
5% E-Commerce Development
10% Legacy System Modernization
AI Summary
“Redfoot is a UK-based software development firm offering mobile, web, e-commerce, blockchain, and modernization services with UI/UX design expertise, focusing on augmenting clients' in-house teams for long-term projects.”
Arkin Software
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Arkin Software Technologies is a leader in the migration and modernization of legacy applications, offering Database Migration Services through its unique proprietary tools, methodologies, and graphical user interface components. This approach aims to prolong the lifespan of legacy applications whil
Highlights
$100,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Services Provided+3 Services
3% QA & Software Testing
17% Legacy System Modernization
5% Custom Web Application Development
8% Mobile App Development (iOS & Android)
AI Summary
“Arkin Software Technologies specializes in modernizing and migrating legacy applications, using proprietary tools and methodologies to extend application lifespan and align business processes with current IT standards.”
Vedik Cyber Technology
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Founded in 2015, VEDIK CYBER TECHNOLOGY PRIVATE LIMITED is a premier software design and development company based in Indore, India, specializing in web and mobile application development. In addition, we provide services in content writing, quality assurance, and more. Our expertise lies in project
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Indore, Madhya Pradesh, In
Services Provided+4 Services
14% Custom Web Application Development
12% Mobile App Development (iOS & Android)
5% E-Commerce Development
3% QA & Software Testing
AI Summary
“Vedik Cyber Technology Pvt Ltd, founded in 2015 in Indore, India, offers comprehensive software design, web and mobile app development, content writing, and quality assurance services with expert project management.”

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Top QA & Software Testing Firms

List of the Best QA & Software Testing Agencies

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