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

Kodilion
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We achieve success through innovative ideas, effective communication, and consistent effort.
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Zagreb, Grad Zagreb, Hr
Services Provided+4 Services
14% Custom Web Application Development
10% Mobile App Development (iOS & Android)
7% QA & Software Testing
3% Legacy System Modernization
AI Summary
“Kodilion drives success by leveraging innovative ideas, effective communication, and consistent effort to deliver broad, impactful solutions across diverse business challenges.”
Simplisive Solutions
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Simplisive Solutions LLP is a specialized technology consultancy and Microsoft Authorized Partner, focusing on comprehensive digital solutions. Our areas of expertise include: Full Stack Development, where we create scalable enterprise-level applications using contemporary frameworks; Web & Mobile D
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
10% Mobile App Development (iOS & Android)
14% Custom Web Application Development
8% QA & Software Testing
2% API Development & Integration
AI Summary
“Simplisive Solutions LLP is a Microsoft partner offering full stack, web, mobile development, and AI-driven QA testing, delivering scalable digital solutions with strategic branding and compliance expertise.”
Celestial Crafters
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### About Celestial Crafters Celestial Crafters is an innovative technology firm located in Kenya, committed to developing groundbreaking tech solutions that empower both businesses and individuals. Our aim is to lead digital transformation and cultivate an inclusive tech ecosystem, with a particul
Highlights
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+6 Services
10% QA & Software Testing
10% Branding Services
10% Software Development Services
10% E-Commerce Development
AI Summary
“Celestial Crafters excels in custom software and e-commerce development alongside mobile app solutions, leveraging modern technologies to deliver tailored applications that meet client needs efficiently.”
Sun Technologies, Inc
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Founded in 1996, Sun Technologies Inc. is recognized as an award-winning leader in innovative IT solutions. The company specializes in Infrastructure Management Services, Gaming Services, Application Development, and Application Testing Services, with particular expertise in storage, virtualization,
Highlights
1000-9999
Employees
Alpharetta, Georgia, Us
Services Provided+18 Services
1% Custom AI Chatbot Development
1% Machine Learning Model Development
3% Cloud Consulting & SI
4% Other IT Consulting and SI
AI Summary
“Sun Technologies Inc., founded in 1996, delivers innovative IT solutions across infrastructure management, application development, testing, and digital transformation to enhance client competitiveness and growth.”
Alepo Technologies Inc
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Alepo is a recognized software company specializing in digital enablement and revenue management. Our innovative and forward-thinking products facilitate operations and billing for digital service providers, including both fixed and mobile telecommunications companies. Founded in 2004 and headquarte
Highlights
50-249
Employees
Services Provided+2 Services
13% Custom Web Application Development
13% Backend Development
10% API Development & Integration
12% SaaS Product Development
AI Summary
“Alepo Technologies Inc. delivers innovative digital enablement and revenue management solutions globally, specializing in telecommunications software including digital BSS, 5G core, policy control, and professional services.”
UpBased
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We specialize in designing, building, and implementing effective, high-quality solutions customized to your requirements, utilizing rapid, clean, and secure coding. Our engineers are dedicated to transforming your concepts into reality. Our team consists of talented software developers with signific
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided
25% Custom Web Application Development
20% Mobile App Development (iOS & Android)
5% QA & Software Testing
50% Cybersecurity Assessments & Hardening
AI Summary
“UpBased delivers custom software solutions with expertise in web and mobile app development, robust cybersecurity, and thorough testing, ensuring secure, innovative, and user-friendly applications.”
Apex021
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At Apex021, our primary focus is to revolutionize the IT environment for our clients. We are an energetic and forward-thinking IT services firm committed to providing exceptional solutions that enable businesses to flourish in the digital era. Our mission is straightforward and unwavering: to enhanc
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided
25% Custom Web Application Development
20% Mobile App Development (iOS & Android)
5% QA & Software Testing
50% DevOps Engineering
AI Summary
“Apex021 is a dynamic IT services firm dedicated to delivering innovative technology solutions that empower businesses to thrive and fully leverage digital advancements.”
Proquantic Software
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Proquantic is a global provider of custom software and mobile app development, delivering tailored software solutions that yield significant benefits for enterprises, businesses, SMEs, and startups. Our relentless focus on innovation allows us to create forward-thinking solutions that align with our
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
250-999
Employees
New York, New York, Us
Services Provided+5 Services
25% Custom Web Application Development
5% E-Commerce Development
3% QA & Software Testing
17% Search Engine Optimization (SEO)
AI Summary
“Proquantic Software delivers custom, digital-first software and mobile solutions globally, leveraging strategic insights and experienced talent to enhance business growth, efficiency, and innovation across industries.”
RedCode
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At our foundation, we see every project as a collaborative effort. We pay close attention, conduct in-depth analysis, and design thoughtfully. Each piece of code, every design choice, and all integrations are focused on achieving significant, measurable results. **What We Excel At:** - **Complex, M
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Cakovec, Hr
Services Provided+4 Services
15% Mobile App Development (iOS & Android)
15% Custom Web Application Development
13% API Development & Integration
5% E-Commerce Development
AI Summary
“RedCode collaborates to develop complex, scalable systems integrating mobile, web, and backend platforms, emphasizing thoughtful design, quality assurance, and ongoing software evolution for measurable impact.”
dataligence-infotech-private
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DATALIGENCE INFOTECH PRIVATE LIMITED is a startup recognized by the Department of Industrial Policy and Promotion (DIPP) as part of the Startup India Program. We are also certified in ISO 9001:2015 as a software development company. Since our establishment, we have been a frontrunner in delivering o
Highlights
Ahmedabad, Gujarat, In
Services Provided+4 Services
20% Custom Web Application Development
10% QA & Software Testing
13% Backend Development
8% Frontend Development
AI Summary
“DATALIGENCE INFOTECH PRIVATE LIMITED, an ISO-certified startup, delivers reliable Indian corporate data and B2B databases through verified research, supporting qualified sales leads and business growth.”

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Top QA & Software Testing Firms

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