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

4,562 Companies

List of the Best QA & Software Testing Agencies

NextJuggernaut
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Juggernaut collaborates with tech startups and entrepreneurs to develop tailored solutions for marketplaces, on-demand mobile services, and curation models. Our mission is to provide outstanding digital solutions to startups in the sharing economy. We aim for excellence in all our endeavors, priorit
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
250-999
Employees
Services Provided
65% Mobile App Development (iOS & Android)
30% Custom Web Application Development
5% QA & Software Testing
AI Summary
“NextJuggernaut partners with tech startups to deliver customized digital solutions for marketplaces, on-demand services, and curation models, emphasizing excellence, transparency, and customer loyalty.”
IT Help Studio
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We specialize in creating personalized, dynamic WordPress websites and ensuring quality through manual software testing, consistently receiving top ratings on the Upwork marketplace.
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
23% Custom Web Application Development
10% QA & Software Testing
14% Web App UI Design
10% UX Research & Usability Testing
AI Summary
“IT Help Studio delivers comprehensive services including personalized WordPress development, manual quality assurance testing, and creative UI/UX and graphic design, ensuring reliable and tailored client solutions.”
Grupo Asesor en Informática S.A.
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### Enhancing Businesses with Customized Software Solutions Established in 1995, Grupo Asesor en Informática has been a trailblazer in Costa Rica's IT sector for almost thirty years. We focus on custom software development and training services, dedicated to facilitating digital transformation for
Highlights
$50,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Curridabat, Cr
Services Provided+3 Services
10% QA & Software Testing
10% API Development & Integration
14% Custom Web Application Development
23% BI & Big Data Consulting & SI
AI Summary
“Grupo Asesor en Informática, established in 1995, delivers customized software development and training, partnering with global firms to drive digital transformation across diverse industries.”
Upwards LLC
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Established in 2018, our company specializes in providing top-notch digital solutions for businesses, emphasizing website development, mobile applications, and automation of business processes. Our full-cycle development team consists of skilled designers, developers, and QA engineers. We focus on f
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided
40% Custom Web Application Development
35% Mobile App Development (iOS & Android)
15% API Development & Integration
10% QA & Software Testing
AI Summary
“Upwards LLC, established in 2018, delivers comprehensive digital solutions including custom websites, mobile apps, and business automation, emphasizing functionality, scalability, and user experience across industries.”
Tinhvan Outsourcing JSC
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TVO is dedicated to achieving the highest project success rates by fostering shared interests with its customers. As one of the few software firms in Vietnam to obtain international certifications like CMMi-L3, ISO 9001, and ISO 27001, TVO offers top-quality projects at competitive prices, supported
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Hanoi, Hanoi, Vn
Services Provided+2 Services
30% Custom Web Application Development
20% Mobile App Development (iOS & Android)
10% Legacy System Modernization
15% Backend Development
AI Summary
“Tinhvan Outsourcing JSC is a certified Vietnamese IT leader providing custom software, mobile apps, system modernization, and QA services, delivering quality projects with reliable resources across industries.”
Ventech Studio
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At AtVentech Studio, we excel in merging creativity with technology to offer outstanding design and IT services. We support businesses in growing, scaling, and distinguishing themselves in the digital landscape, creating modern and user-friendly designs alongside dependable IT solutions. Our dedicat
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+2 Services
10% QA & Software Testing
10% Mobile App Development (iOS & Android)
14% Backend Development
33% DevOps Engineering
AI Summary
“Ventech Studio combines innovative design and IT services to help businesses thrive digitally, delivering custom websites, brand identities, and reliable technology solutions with a focus on quality and client success.”
Zynala
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At Zynala, we focus on developing websites, mobile applications, and software solutions. We cater to businesses ranging from small startups to large corporations. Our aim is to transform your concepts into exceptional digital experiences.
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Bucuresti, Bucuresti, Ro
Services Provided+4 Services
40% Software Development Services
20% Mobile App Development (iOS & Android)
10% Other IT Consulting and SI
10% Custom Web Application Development
AI Summary
“Zynala excels in Software Development with expertise in custom web applications, mobile app development across iOS and Android, e-commerce solutions, application testing, and IT staff augmentation, delivering tailored software solutions to diverse industries.”
IT-Dimension Inc.
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Who are we? Our main goal is to create highly effective R&D teams focused on solving intricate problems and providing innovative, reliable solutions. Since 2007, we have produced more than 600 software products. We excel in delivering high-quality, responsive, and secure projects, both new and exist
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Santa Monica, California, Us
Services Provided+5 Services
17% Custom Web Application Development
14% Mobile App Development (iOS & Android)
3% QA & Software Testing
8% Product UX Strategy
AI Summary
“Founded in 2007, IT-Dimension Inc. specializes in developing web, mobile, and desktop applications across diverse industries, emphasizing innovative, secure solutions and strong client partnerships.”
Lionwood.software
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Lionwood.software is a company that provides custom software development services, assisting businesses in the Logistics, Transportation, and Agriculture sectors in creating tailored solutions to meet their specific needs and optimize existing workflows. We concentrate on identifying the genuine req
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Lviv, Lviv, Ua
Services Provided+17 Services
8% Mobile App Development (iOS & Android)
10% Backend Development
5% QA & Software Testing
8% Blockchain & Web3 Development
AI Summary
“Lionwood.software delivers custom software solutions leveraging AI, Blockchain, and modern technologies to optimize workflows in Logistics, Transportation, and Agriculture, ensuring practical business impact and user adoption.”
invortech
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As a premier software company, Invortech provides global services, bringing expertise and excellence to every project.
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+5 Services
15% QA & Software Testing
15% Business Intelligence (BI) Dashboard Development
14% BI & Big Data Consulting & SI
7% Cybersecurity Assessments & Hardening
AI Summary
“Invortech is a leading global software company delivering expert services and innovative solutions, committed to excellence across diverse technology projects worldwide.”

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