Top QA & Software Testing Firms

Q: What does a QA and software testing company do?

A QA and software testing company checks that software works as intended before and after release. It plans testing, runs manual and automated tests across browsers and devices, checks performance, security and accessibility, reports defects with steps to reproduce, and confirms fixes. Many also build and maintain automated regression suites.

Q: How much does software testing cost?

Pricing is per project, per dedicated tester per month, or hourly. Cost rises with application complexity, devices and platforms, automation, specialist testing and compliance needs. Among firms in this listing, $1,000 is the most common minimum project, and larger testing companies start at $10,000 or $25,000.

Q: What is the difference between manual and automated testing?

Manual testing uses people to explore the software and check new features, layouts and usability. Automated testing runs scripted checks repeatedly, usually on every build, which suits regression testing. Most products need both: automation for stable, repeated paths and manual testing for new and judgment-heavy work.

Q: How do you choose a QA outsourcing company?

Look for testing experience with products like yours, sample test plans and bug reports, the automation framework they use, and how they integrate with your sprints and tools. Confirm who owns the automation code and how flaky tests are handled. A short paid pilot on one feature is a good way to compare vendors.

Q: Which industries hire software testing firms?

The firms listed most often serve information technology, ecommerce, healthcare, financial services, business services and education. Financial services and healthcare buyers need security testing and audit-ready documentation, ecommerce companies focus on checkout, payments and load testing, and education platforms test accessibility for students.

Q: Where are most QA and software testing companies located?

Most QA and software testing companies on this page are in Ahmedabad, Bengaluru, Lahore, London and Noida, with Pune close behind. India and Pakistan host large testing teams that work across time zones for overnight test runs, while London firms often handle compliance-heavy and accessibility testing.

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

TestFort QA Lab
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We don't develop software; we ensure yours functions seamlessly. For 25 years, we've been the behind-the-scenes force enabling smooth launches, whether it's a new trading platform, an AI-driven application, or a large-scale healthcare solution. Our quality assurance engineers are dedicated exclusive
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
London, England, Gb
Services Provided
100% QA & Software Testing
AI Summary
“TestFort QA Lab specializes exclusively in comprehensive manual and automated software testing across web, mobile, and desktop platforms, delivering quality assurance solutions tailored for diverse industries over 25 years.”
Stelo Technology Pvt Ltd
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Reach out to us at sales@stelotechnology.com now to get a 2-week risk-free trial! Stelo Technology is dedicated to providing organizations like yours with the advantages of a complete QA department without the typical setup costs and complications. Our clients are at the heart of everything we do. W
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Pune, Maharashtra, In
Services Provided
100% QA & Software Testing
AI Summary
“Stelo Technology Pvt Ltd offers comprehensive, flexible software testing services including mobile, automated, and security testing, leveraging 15 years' expertise and AI to deliver quality assurance and client-focused solutions.”
Testscenario
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We are a dedicated software testing company that provides Quality Assurance and software testing services to a diverse clientele. With over 11 years of expertise, Testscenario is a specialized QA and testing firm that delivers high-quality services. Our focus is on the following types of testing:
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Ahmedabad, Gujarat, In
Services Provided
100% QA & Software Testing
AI Summary
“Testscenario is a specialized software testing firm with over 11 years of experience, offering comprehensive Quality Assurance and software testing services to diverse clients.”
Reactive Hive Ltd
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Schedule a Discovery Call: https://calendly.com/reactivehive-info/30min At Reactive Hive, we offer a full range of QA and testing services, along with customized, on-demand QA solutions for everyone from early-stage startups to large enterprises. Our QA experts possess practical experience in variou
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Sofia, Sofia, Bg
Services Provided
100% QA & Software Testing
AI Summary
“Reactive Hive Ltd. delivers comprehensive QA and testing services, offering tailored solutions and expert support across sectors like eCommerce, healthcare, IoT, and iGaming for diverse client needs.”
Yogiti Technologies
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Yogiti is one of the fastest-growing companies in the software testing and quality engineering sector, quickly gaining recognition as a leader in advanced software testing and QA consulting. We provide guidance to Fortune 500 companies and SMEs in delivering high-quality technology services and faci
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Pimpri-Chinchwad, Maharashtra, In
Services Provided
100% QA & Software Testing
AI Summary
“Yogiti Technologies is a leading software testing and quality engineering firm offering advanced QA services like automation, performance, and security testing, enabling digital transformation across diverse industries globally.”
QA Madness
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QA Madness is a reliable ally in software testing and QA outsourcing. Our goal is to help companies improve the quality of their digital products and IT services. Our committed team undertakes projects across various sectors, including software development & AI, healthcare, fintech, media & entertai
Highlights
< $25/hr
Avg Hourly Rate
50-249
Employees
Warszawa, Masovian, Pl
Services Provided
100% QA & Software Testing
AI Summary
“QA Madness specializes in software testing and QA outsourcing across diverse sectors, enhancing digital product quality through comprehensive testing services and expert industry knowledge.”
a1qa
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For over ten years, a1qa has been delivering independent software quality assurance and testing services across various sectors, catering to more than 500 clients worldwide, including Fortune 500 firms. Our expertise is demonstrated by over 1500 completed projects, supported by positive feedback fro
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
250-999
Employees
Denver, Colorado, Us
Services Provided
100% QA & Software Testing
AI Summary
“a1qa provides independent software quality assurance and testing services globally, completing over 1500 projects for 500+ clients, including Fortune 500 firms, with a focus on professionalism.”
Codedsk (Pvt) Ltd
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Codedsk (Pvt) Ltd is an independent QA/Testing consultancy based in Pakistan, established in February 2021, dedicated to delivering top-notch testing and QA services. Our team consists of QA professionals with an average of over 8 years of experience in software testing. Our goal is to offer a compr
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Faisalabad, Pk
Services Provided
100% QA & Software Testing
AI Summary
“Codedsk (Pvt) Ltd is a Pakistani QA consultancy specializing in comprehensive manual and automation software testing across diverse industries, ensuring quality, timely delivery, and customer satisfaction.”
Lotus Quality Assurance (LQA)
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Founded in 2016, LQA is Vietnam's premier independent quality assurance service provider. We currently operate subsidiaries in Japan and the United States to meet our clients' diverse quality assurance needs across various sectors, including healthcare, fintech, gaming, education, construction, eCom
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Hanoi, Vn
Services Provided
100% QA & Software Testing
AI Summary
“Founded in 2016, Lotus Quality Assurance is Vietnam's leading QA provider, delivering specialized app, automotive, and embedded testing services across industries globally with trusted expertise.”
QA Mentor, Inc.
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QA Mentor is a highly acclaimed software testing company based in New York, recognized as CMMI Level 3 SVC + SSD v1.3 appraised and certified in ISO 27001:2013, ISO 9001:2015, and ISO 20000-1. With over 400 QA professionals across 11 countries, offering more than 30 testing services available in all
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
250-999
Employees
New York, New York, Us
Services Provided
100% QA & Software Testing
AI Summary
“QA Mentor, Inc. is a globally recognized software testing leader, offering diverse QA services through 400+ professionals across 11 countries, serving 474 clients in 28 countries with award-winning expertise.”

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Buyer's guide

Hiring QA & Software Testing companies

What the work covers, how to judge a partner and what drives the price.

What QA and software testing companies provide

Services cover functional testing of features and regression, exploratory testing, cross-browser and real-device testing for mobile, API testing with tools such as Postman, performance and load testing with JMeter or k6, security testing against the OWASP Top 10, accessibility checks against WCAG, and usability testing.

Automation is often the biggest piece of work: building a framework, writing scripts for the regression suite, and running it in the CI/CD pipeline so every build gets tested. Good firms maintain the suite as the product changes, which is where many in-house automation efforts fail.

Engagements include one-off audits or pre-launch testing, managed QA where the vendor owns test planning and reporting, dedicated testers embedded in the client's team, and crowdtesting across many devices and locations. Deliverables are a test plan, test cases, defect reports in Jira or a similar tracker, and release sign-off reports.

Chapter 1 of 3

FAQ

QA & Software Testing FAQs

Short answers to what buyers ask before hiring a QA & Software Testing company.

Question not covered? Ask our team

A QA and software testing company checks that software works as intended before and after release. It plans testing, runs manual and automated tests across browsers and devices, checks performance, security and accessibility, reports defects with steps to reproduce, and confirms fixes. Many also build and maintain automated regression suites.

Pricing is per project, per dedicated tester per month, or hourly. Cost rises with application complexity, devices and platforms, automation, specialist testing and compliance needs. Among firms in this listing, $1,000 is the most common minimum project, and larger testing companies start at $10,000 or $25,000.

Manual testing uses people to explore the software and check new features, layouts and usability. Automated testing runs scripted checks repeatedly, usually on every build, which suits regression testing. Most products need both: automation for stable, repeated paths and manual testing for new and judgment-heavy work.

Look for testing experience with products like yours, sample test plans and bug reports, the automation framework they use, and how they integrate with your sprints and tools. Confirm who owns the automation code and how flaky tests are handled. A short paid pilot on one feature is a good way to compare vendors.

The firms listed most often serve information technology, ecommerce, healthcare, financial services, business services and education. Financial services and healthcare buyers need security testing and audit-ready documentation, ecommerce companies focus on checkout, payments and load testing, and education platforms test accessibility for students.

Most QA and software testing companies on this page are in Ahmedabad, Bengaluru, Lahore, London and Noida, with Pune close behind. India and Pakistan host large testing teams that work across time zones for overnight test runs, while London firms often handle compliance-heavy and accessibility testing.

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Top QA & Software Testing Firms

List of the Best QA & Software Testing Agencies

Hiring QA & Software Testing companies

What QA and software testing companies provide

How to choose a software testing company

QA and software testing pricing

QA & Software Testing FAQs

Latest insights & expert perspectives

Questions to Ask a Software Development Agency: Six With Proof

How to Compare Software Development Quotes Priced 5x Apart

AI Agent Development Cost: Build, Tokens, Reliability

One Platform. One Promise. One Trust.

Top QA & Software Testing Firms

List of the Best QA & Software Testing Agencies

Hiring QA & Software Testing companies

What QA and software testing companies provide

How to choose a software testing company

QA and software testing pricing

QA & Software Testing FAQs

What does a QA and software testing company do?

How much does software testing cost?

What is the difference between manual and automated testing?

How do you choose a QA outsourcing company?

Which industries hire software testing firms?

Where are most QA and software testing companies located?

Where buyers look next

Latest insights & expert perspectives

Questions to Ask a Software Development Agency: Six With Proof

How to Compare Software Development Quotes Priced 5x Apart

AI Agent Development Cost: Build, Tokens, Reliability

One Platform. One Promise. One Trust.