21 minutes to read
Top Software Testing Companies of 2025
DeviQA team
Software testing is a key part of building a reliable digital product. It helps you find and fix problems early, cut costs, and launch faster. Poor testing can hurt your brand, slow your release, and increase risks. That’s why more companies are working with dedicated software testing providers instead of relying only on in-house teams.
Top 20 software testing companies
Whether you're a founder or CTO, this list will help you discover the best QA providers for startups that need fast, reliable, and cost-effective testing support. This guide features the top software testing companies in 2025. These providers offer everything from functional testing to performance testing, automation, and QA consulting. Whether you're launching a startup or managing a large enterprise, you’ll find companies here with the skills to support your goals.
1. DeviQA
Founded: 2010
Headquarter: Poland, Ukraine, United States, United Kingdom, Mexico
Company size: 250+
Rating: 5.0
Key services: QA outsourcing, QA consulting, managed testing services, automation testing, manual testing, performance testing, functional testing, full cycle testing, mobile app testing, web app testing, API testing, etc.
As one of the most trusted QA outsourcing companies, DeviQA supports businesses looking to extend their testing capabilities without building an in-house team from scratch. With extensive experience and advanced technologies, DeviQA's team provides a wide range of QA services. Whether there is a need to design and establish a QA process from the ground up, refine an existing QA process, or bring in real QA experts to enhance an in-house team, DeviQA is ready to help.
The company's high level of professionalism is backed by numerous positive testimonials and prestigious awards.
2. QA Mentor
Founded: 2010
Headquarter: United States
Company size: 313
Rating: 4.9
Key services: automation QA services, security testing, QA performance engineering and optimization, Qa audit and process improvement, QA environment management, etc.
QA Mentor is an ISO-certified independent software testing company headquartered in New York with twelve testing operation centers in the USA, UK, France, Romania, Ukraine, India, Tunisia, and Thailand. QA Mentor is known as a one-stop shop for all QA needs, offering an extensive range of services, some of which are unique to QA Mentor. A strong global presence, highly professional team, goal-oriented approach, client focus, creativity, and innovation make this company a reliable partner you can entrust with your product's quality.
3. Testrig Technologies
Founded: 2015
Headquarter: Pune, India
Locations: UK, USA
Company size: 51-200
Rating: 5.0
Key services: Quality assurance, DevOps QA, automation testing , cloud migration assurance, AI/ML testing, agile QA , web & mobile Testing, security & penetration testing, blockchain testing , QA consultation
Testrig Technologies stands as a global leader in Quality Assurance and Software Testing. With a diverse clientele spanning the USA, UK, Canada, Singapore, and more, we are recognized for our expertise in delivering exceptional testing solutions. As an independent Software Testing and QA Consulting firm, Testrig Technologies is committed to driving engineering excellence across businesses of all sizes, from SMEs to Fortune 500 companies. Our specialized services include advanced Quality Engineering, AI-driven Test Automation, Performance Engineering, and a wide array of continuous and automated testing solutions. We integrate these services seamlessly into the Software Development Life Cycle to ensure optimal product performance, reliability, and quality.
4. TestFort
Founded: 2002
Headquarter: United States
Company size: 160
Rating: 5.0
Key services: manual testing, test automation, testing consulting, testing outsourcing, functional testing, UI testing, usability testing, compatibility testing, etc.
TestFort is a renowned qa testing company known for its excellence in quality assurance and software testing. Its seasoned and dedicated team ensures that every software solution is tested thoroughly, on time, and within the agreed budget. TestFort delivers transparent and efficient communication, concise documentation, and tangible results. As a leading provider of qa software testing services, TestFort guarantees success in all its projects.
5. Solvd
Founded: 2011
Headquarter: United States
Company size: 600+
Rating: 5.0
Key services: functional testing, performance testing, compatibility testing, usability testing, security testing, and end-to-end testing.
Solvd is a software development and technology consulting company that offers high-quality software testing services. It has 8 offices in different parts of the world, and its team is made up of experienced industry professionals and young high-potential talents. As a leading software testing firm, the company is a go-to in such domains as Healthcare, FinTech, Logistics, EdTech, Media, etc. The Solvd experts make use of leading technologies and tools and test software of the most diverse types including mobile apps, web apps, desktop apps, IoT, CRM and ERP platforms, medical devices, and software based on Cloud and AR/VR.
6. ScienceSoft
Founded: 1989
Headquarter: United States
Company size: 75+
Rating: 4.8
Key services: functional testing, performance testing, compatibility testing, accessibility testing, security testing, usability testing, etc.
ScienceSoft offers a wide range of IT services including professional software testing. The company has ISTQB-certified QA engineers and an ISO 9001-certified quality management system. As a software qa company, its QA team can accept any challenge. It provides testing of mobile apps, web apps, desktop apps, DWH, and SaaS. It can help you irrespective of the technology used. The QA engineers of ScienceSoft test unique systems based on advanced technologies and architectures such as Big Data, IoT, AR, blockchain, microservices, etc. ScienceSoft is a QA partner you can trust to deliver excellent results.
7. KiwiQA
Founded: 2009
Headquarter: Sydney, Australia
Company size: 51-200
Rating: 4.9
Key Services: Test automation (AI & traditional), load & performance testing, security testing, functional & integration testing, cross-compatibility testing, accessibility testing.
KiwiQA is a global leader in software testing, delivering high-quality solutions across industries. KiwiQA provides comprehensive testing services, including functional, automation, performance, security, and accessibility testing. With a client-centric approach, KiwiQA helps organizations ensure flawless software delivery, reduce time to market, and enhance product performance. Known for its innovative frameworks like K-SPARC and expertise in platforms like Salesforce, Microsoft D365, and TestSigma, KiwiQA is a trusted partner in ensuring robust, scalable, and secure software applications.
8. QualySec
Founded: 2020
Headquarter: India
Company size: up to 50
Rating: 4.9
Key services: penetration testing services.
QualySec Technologies stands out from the rest of the top software testing companies. This provider of top-notch cybersecurity services specializes in penetration testing for diverse applications including web, mobile, cloud, IoT, and blockchain apps. It is a reliable partner for high-profile companies in finance, healthcare, government, insurance, and technology domains. Its team abides by OWASP and SANS standards and uses a personalized testing approach to provide the best results. Testing reports include clear vulnerability reproduction steps, screenshots, videos, and actionable mitigation steps along with links to helpful resources. Beyond penetration testing, QualySec also provides automation testing, manual testing, functional testing, load testing, ethical hacking, and more.
9. Luxe Quality
Founded: 2016
Headquarter: United States, Spain, Ukraine
Rating: 5.0
Key services: Functional testing, automated testing, security testing, performance testing, usability testing, web app testing, mobile app testing, API testing, QA consulting, etc.
Luxe Quality is a company with extensive experience in software quality assurance. Since its founding, it has completed over 200 projects for clients from 30 countries, earning a 5-star rating on Clutch. The company provides a full range of testing services committed to transparency and efficiency in project execution. With 30% of its team being senior-level specialists, Luxe Quality guarantees high expertise and professionalism, making it a reliable partner for ensuring software quality.
10. Cigniti Technologies
Founded: 1998
Headquarter: India
Rating: 4.9
Key services: DevOps testing, compatibility testing, functional testing, performance testing, security testing, test automation, crowdsourced testing, quality engineering, etc.
Cigniti is an IT company with a long history and a reputation as a leading AI and IP-led Digital Assurance and Digital Engineering services company. Headquartered in Irving, Texas and Hyderabad, Cigniti has several offices in the USA, Europe, the Middle East, APAC, and other regions. Being at the forefront of technology advancement, Cigniti helps global brands across 23 countries with their digital transformation and encourages them to explore new digital horizons. Cigniti is a company with the expertise and resources needed to provide top-quality software testing services.
11. AppSierra
Founded: 2015
Headquarter: India
Company size: 150+
Rating: 4.9
Key services: compatibility testing, functional testing, performance testing, automation testing, usability testing, localization testing, QA engineering, etc.
AppSierra is a fast-growing IT company offering software development and QA services to businesses of all sizes and across all domains. The fact that AppSierra is recommended by 96% of its clients demonstrates the high professionalism and competency of its team. When it comes to software testing, its QA experts prepare and execute a wide range of tests, both automated and manual, to ensure comprehensive testing resulting in the exceptional quality of a product. Microservices testing, blockchain testing, IoT testing, Big Data testing, and CRM testing are all within AppSierra's capabilities. If you want to engage the best-of-breed QA engineers, do not postpone getting in touch with AppSierra.
12. Aegis Softtech
Founded: 2005
Headquarter: India
Key services: functional testing, performance testing, isolation testing, usability testing, automation testing, browser testing, etc.
Aegis Softtech is an IT company based in India offering a rich suite of services, including software testing services. The company uses cutting-edge technologies and digital innovations to help numerous businesses worldwide with their digital transformation. QA experts focus on efficiency, high quality, risk mitigation, and cost reduction. State-of-the-art technological solutions make it possible for the QA team to establish a smooth QA process that checks every nook and cranny of an application under testing. This approach helps deliver excellent results within the stipulated time.
13. A1QA
Founded: 2003
Headquarter: United States and UK
Company size: 1100+
Rating: 4.9
Key services: functional testing, performance testing, cybersecurity testing, usability testing, integration testing, regression testing, compatibility testing, localization testing, etc.
A1QA is a large ISO-certified company specializing exclusively in software testing. It offers a wide variety of world-class QA services and supports key players in the global market, including Fortune 500 companies. Its global presence allows A1QA to deliver QA services 24/7/365 while quickly adapting to any time zone and project requirements. The company offers several engagement models to meet all possible client needs. In terms of technologies, A1QA has no limits, taking on projects related to blockchain, CRM, ERP, AR/VR, Cloud, IoT, desktop, mobile, and web solutions. Partner with A1QA to roll out outstanding software products with exceptional customer experiences.
14. TestScenario
Founded: 2014
Headquarter: India
Company size: 41+
Rating: 4.9
Key services: automation testing, web app testing, mobile testing.
TestScenario primarily focuses on mobile testing, web testing, and test automation services. It serves startups, SMEs, and large companies. As an independent software testing services provider, its highly professional and seasoned QA experts use a rich infrastructure to test apps thoroughly across diverse platforms, browsers, and devices. The team analyzes software, designs test cases based on real-world scenarios, automates them, and executes tests to identify all bugs and weaknesses that can prejudice the success of the developed product. With TestScenario, high quality is 100% guaranteed.
15. QA Madness
Founded: 2013
Headquarter: Lithuania
Rating: 4.8
Key services: automated testing, manual testing, cybersecurity, mobile app testing, web app testing, desktop app testing, wearables testing, QA audit and consulting.
QA Madness is a leading provider of software testing services. Discipline, communication, collaboration, efficiency, and reliability are the key working principles of the company. Its cherry-picked QA specialists use an impressive lineup of QA testing technology to run functional testing, UI testing, performance testing, compatibility testing, regression testing, integration testing, acceptance testing, localization testing, end-to-end testing, API testing, and other types of testing to help clients roll out high-quality software products. The QA Madness team can set up and manage all QA activities on a project, including QA audits, test documentation writing, and business analysis.
16. Mindful QA
Founded: 2018
Headquarter: United States
Rating: 5.0
Key services: automation testing, manual testing, website testing, mobile app testing, security testing, accessibility testing, QA recruiting, etc.
Mindful QA is an American award-winning software testing company that gives 10% of its profit to charity. All its QA specialists are located in the USA and have an average of 5 years of experience. The company provides a rich bouquet of QA services to cover all possible client needs. Client focus is one of the core principles of Mindful QA. Its skillful and diligent team always sets up and manages the QA process with regard to the specific needs of a particular project. Among the company's clients are well-known brands such as Google, Intel, and Microsoft. If you set the bar high, Mindful QA is the QA service provider you need.
17. HikeQA
Founded: 2020
Headquarter: India
Rating: 5.0
Key services: mobile app testing, QA outsourcing, performance testing, automation testing, functional testing, etc.
HikeQA is a young independent software testing company providing exceptional services to startups and SMEs across diverse industries. Profound knowledge, polished skills, and passion for perfection enable the HikeQA team to deliver the best testing solutions ensuring the highest quality of software products. The company offers a wide variety of software testing services. Whether you develop a mobile, web, SaaS, or eCommerce solution, HikeQA can become a reliable partner you can trust.
18. ImpactQA
Founded: 2011
Headquarter: United States
Company size: 250+
Rating: 4.6
Key services: automation testing, functional testing, mobile app testing, security testing, IoT testing, performance testing.
ImpactQA is a well-known leader in next-gen software testing, QA consulting, and product development. The company serves startups, SMEs, and Fortune 500 companies across multiple domains, including healthcare, e-learning, eCommerce, media, logistics, real estate, and others. The QA team at ImpactQA consists of highly professional manual and automation QA engineers who leverage their rich experience and advanced testing technologies to help clients hit the market with software solutions that provide an exceptional user experience.
19. QATestLab
Founded: 2005
Headquarter: Cyprus
Company size: 250+
Rating: 4.5
Key services: functional testing, UX / usability testing, compatibility testing, integration testing, performance testing, penetration testing, localization testing, GUI testing, security testing, acceptance testing.
QATestLab is a top-notch software testing company that has embedded quality, reliability, and innovation in its corporate culture since its inception. The company excels in manual and automated testing, always coming up with a holistic testing strategy and executing all necessary types of testing as best as possible. QATestLab has a great track record in testing games, Internet of Things, web, mobile, desktop, and cloud applications. Additionally, the company offers QA consulting and test documentation writing services. QATestLab has the expertise, best-of-breed QA specialists, and rich infrastructure to help you build an outstanding solution.
20. QASource
Founded: 2002
Headquarter: United States
Company size: 1400+
Rating: 4.8
Key services: automation testing, manual testing, security testing, performance testing, mobile QA, API testing, QA analysis, blockchain testing, IoT testing, etc.
QASource is a well-established software testing company whose team knows everything about quality assurance. Paying particular attention to on-time delivery and customization, the company excels at helping businesses of all kinds and sizes manage the quality of their software products while keeping costs low. Among its clients are famous brands such as eBay, Salesforce, Facebook, Ford, Amazon, IBM, and others. If you wish to reap the benefits of a fully staffed QA department without the related setup expenses and hassle, a partnership with QASource is what you need.
21. Luvina
Founded: 2004
Headquarter: Vietnam, Japan, United States
Company size: 750+
Key services: Automation testing, manual testing, performance testing, functional testing, end-to-end testing, mobile app testing, web app testing, API testing, UAT Testing, System Testing, etc.
To minimize risks in your software project, Luvina is one of the automation testing companies you should not overlook. With a sharp analytical mindset and attention to detail, Luvina detects errors early, ensuring flawless software. Luvina's automation testing services can streamline testing processes, improve software quality, and enhance security with advanced tools and comprehensive test cases tailored to your needs.
22. TestingXperts
Founded: 1996
Headquarters: UK, United States
Company size: 2500+
Key services: manual testing, automation testing, security testing, performance testing, accessibility testing, test consulting, etc.
TestingXperts is considered one of the best software testing service providers for a reason. The company has succeeded in the market and gained a reputation as a trusted QA partner. While it has headquarters in the USA and the United Kingdom, its 12 offices are located all over the world. TestingXperts offers an impressive range of qa testing services, and its experienced team works with the most advanced technologies including AI and ML, blockchain, Big Data, Cloud, IoT, and others. The company is a holder of numerous global awards and recognitions. It keeps on doing its best and opening new horizons.
23. Netow Solutions
Founded: 2012
Headquarter: Nigeria
Company size: 15
Key services: QA and software testing, resource augmentation, QA training.
Netow Solutions is an independent software testing company based in Nigeria with an ambitious plan to become the largest QA service provider in West Africa. The company provides a wide variety of services, including API/web services testing, security testing, usability testing, compatibility testing, user acceptance testing, regression testing, integration testing, and end-to-end testing. Its tight-knit team comprises seasoned QA experts who not only work on various projects and ensure exceptional quality but also share their knowledge with young talents at Netow Solutions Academy.
Other software testing companies:
Ranking methodology
The rating of each company is based on the information available on Clutch at the time of the article update.
How we rank companies? We began by taking a close look at the software testing market to understand what makes a company stand out. Our approach starts with several key factors. One is the company’s history and track record in delivering quality testing services over time. Another factor is the range of testing solutions offered, including manual, automated, and specialized testing. We also reviewed customer feedback and case studies to see how clients have experienced working with each company. In addition, we considered the technical know-how demonstrated by the teams, including their familiarity with modern testing tools and certifications. Finally, we looked at the company’s presence in the market, taking into account any awards or recognition that signal industry respect.
For every criterion, a score is given on a set scale. Each factor is assigned a weight that reflects its importance in determining overall quality. The scores for all criteria are then combined to create a final ranking. This method is designed to give a balanced view of each company’s strengths, ensuring the list fairly represents the best in the software testing field.
How to select the right software testing provider
When looking for a company to handle your software testing, consider these points:
Expertise and experience
Seek companies with a strong record of testing work. Consider certifications, case studies, or references relevant to your sector. Specialized skills—like functional, performance, security, or usability testing—can add value.
Track record and project alignment
Verify their history with projects similar in scope and size to yours. A proven track record with comparable challenges ensures a smoother collaboration.
Range of services
Make sure the provider offers multiple testing approaches, including manual, automated, mobile app, and API testing. This helps address your unique needs.
Testing methodologies
Check if they use current practices. Teams that follow Agile, DevOps, or CI/CD pipelines tend to fit well into modern development workflows.
Tools and technology
Look for a partner that works with a variety of testing tools (both commercial and open-source). Staying current helps handle ongoing changes in your software.
Scalability and flexibility
Pick a provider that can increase or decrease resources as your project grows or changes. Check their ability to adapt to evolving project requirements.
Communication and collaboration
Clear communication is crucial. Look for consistent updates, easy collaboration, and consider time zone factors if you need real-time interactions. Evaluate their communication style and client engagement model to ensure seamless integration with your teams.
Quality assurance processes
Ask about their QA approach. How do they plan tests, track bugs, and produce reports? Thorough processes help maintain consistent outcomes.
Cost-effectiveness
Price matters, but weigh it against the quality and service you get. Transparent pricing helps avoid unplanned fees.
Data security and compliance
Check if the provider follows data protection rules, such as GDPR, if your software handles sensitive data. Their security testing can protect both your product and your users.
Reputation and references
Look at online reviews or ask for references. A reliable track record can signal dependable service.
Location and cultural fit
Collaborating with teams in other regions can affect communication and project flow. Compare nearshore vs. Offshore outsourcing options based on time zones and cultural considerations.
Additional tips
Domain knowledge
Look for testers who understand your industry or niche.
Pilot projects
Run a small test or proof-of-concept to see how they perform in a real scenario.
Legal and contractual clarity
Confirm NDAs, intellectual property ownership, and clear SLAs.
Measuring results and setting KPIs
Decide on metrics like test coverage, bug detection rates, and turnaround time so you can track progress.
By integrating these points, you'll be well-equipped to select a QA testing company that aligns with your project's needs and goals, ensuring a successful partnership.
What is the typical cost of hiring a software testing company?
Costs can vary based on location, experience level, and services offered. On average:
Hourly rate: $25–$75/hour (offshore), $75–$150/hour (US or Western Europe).
Monthly dedicated QA team: $5,000–$25,000+
Project-based QA: Small projects may cost $3,000–$10,000; larger projects can go well beyond.
Some companies offer flexible pricing based on sprints, feature sets, or test coverage.
How do QA companies scale testing efforts for different project sizes?
Most top QA providers offer scalable teams and modular services. For a small app, you might need just one or two testers. For a large system, they can assign full teams with leads, automation engineers, and performance testers. They often use Agile or DevOps workflows and can plug directly into your CI/CD pipeline to run tests as your product evolves.
Why AI-driven capabilities are crucial for software testing companies
AI is changing how testing is done. Some companies now offer:
These tools make testing faster and more accurate, which is essential for keeping up with frequent releases.
Challenges of Outsourcing QA
Outsourcing QA can provide numerous benefits, but it’s not without challenges. Some common issues include:
Communication barriers: Differences in time zones, languages, or working styles can lead to misunderstandings or delays.
Data security concerns: Sharing sensitive information with an external team may create risks.
Quality consistency: Ensuring the outsourced team meets your standards requires ongoing monitoring.
Integration with existing teams: Seamlessly integrating an external QA team with your in-house developers can be complex.
Addressing these challenges involves selecting a reliable QA partner, setting clear expectations, and maintaining open communication throughout the project.
Conclusion
Your search for a reliable provider of software testing services can be time-consuming and require significant effort. However, it is worth it. Your software testing provider should be highly professional, committed, and reliable. We believe that our list of software testing companies, along with a set of important criteria, will help you find the perfect software testing partner. From global players to niche experts, these QA outsourcing companies adapt to diverse product needs. For early-stage tech teams, choosing from the best QA providers for startups can ensure a smoother release path and better user experience.
Would you like to add another company worthy of this list? Don't hesitate and write us an email at [email protected] with the subject "Top 20 Leading Software Testing Companies"