Explore leading software testing companies that launch high-performing products, detect bugs early, improve stability, and ensure every feature works correctly across devices and environments. For teams focused on the US market, we also highlight trusted partners with region-specific expertise, including top US-based software testing companies.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
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Empowering Innovation Through IT Solutions.
iVelopment delivers cutting-edge IT solutions that drive business success. With a focus on personalized service and innovative technologies, we provide tailored software development, systems integration, and IT staffing to help companies stay ahead in a rapidly evolving digital landscape...
Top Services:
- Graphic Design
- Logo Design
- Web Design
- Web Development
- WordPress Website Design
- Show more
- Location
- Rosario, Argentina
- Number of Employees
- Under 49
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsiVelopment, Inc Services
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iVelopment, Inc Reviews & Testimonials
Web Design Review from Ana Carolina
iVelopment LLC's project management was exceptional. They delivered all milestones on time and kept us informed throughout the development process. Their responsive communication and proactive approach to addressing our needs were truly impressive. They took the time to understand our vision and goals, and their team worked diligently to bring that vision to life.
Web Design Review from Andriy Moraru
iVelopment LLC was a breath of fresh air for our online presence. They listened to our needs, overhauled our website with meticulous care, and significantly enhanced user experience. This talented team is not only skilled but also incredibly responsive and efficient, providing a one-stop shop for all our digital needs. Our business is now thriving with their seamless web solutions!
Software Development Review from Lee Ellis
Working with iVelopment was a transformative experience for our company, Tyson Properties South Africa. They helped us turn our vision of a customized property management software into reality. Their team took the time to understand our unique challenges and delivered a tailored solution that streamlined our operations and improved client interactions.The project was managed flawlessly, with every milestone met on time. Their responsiveness to our needs was remarkable, and their innovative approach was refreshing. The end result was a sophisticated yet user-friendly platform that has significantly enhanced our operational efficiency.Overall, iVelopment exceeded our expectations, and I highly recommend them for any custom software development needs. Their partnership has undeniably elevated our business!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsStrategize. Develop. Deliver.
Your business faces unique challenges. Let's work together to create a custom mobile app or web solution to meet those challenges head-on...
Top Services:
- Mobile App Development
- Software Development
- Staff Augmentation
- IoT
- AI Development
- Show more
- Location
- Nashua, New Hampshire
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 8 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsZco Corporation Services
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Zco Corporation Reviews & Testimonials
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Cross-Platform Review from Mark Gratiot
In addition to building out a native remote inspection app for iPads, Zco concurrently ported the software to a Xamarin platform for Windows users. Zco has released nine major iterations of the iPad app, each available in the App Store, as well as the initial version of the cross-platform Xamarin build. Their nimble team boasts a wide breadth of skills to match any given situation. Having clear documentation upfront has reduced onboarding time.
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Mobile App Development Review from Katie Matter
Zco Corporation provided full-stack mobile app development to an educational resource retail organization. They worked in Unity to build a cross-platform resource for users to advance through various curricula. The app has successfully been moved into preproduction and the second phase of development, completely satisfying project stakeholders with the quality of both its designs and functionality. The Zco Corporation team is highly creative and collaborative throughout their work.
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Startup Review from J. Michael Webb
J. Michael Webb from CheckMySpot chose Zco Corporation for app development due to its expertise. Zco adeptly developed a hybrid mobile teledermatology platform and an admin website, demonstrating excellent communication, responsiveness, and innovation. Despite the project's evolving and innovative nature, Zco seamlessly integrated Webb's intent and met all challenges, leaving him with no suggestions for improvement. (Verified via email/call)
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsCome as a client, Stay as a friend
We build custom digital products that drive business results, combining strong technical delivery with a deep understanding of business needs. Our team adapts to your working style and helps you make smart technical decisions, speaking a language you'll understand...
Top Services:
- Mobile App Development
- Web Development
- Product Design
- Software Development
- IT Services
- Show more
- Location
- Krakow, Poland
- Number of Employees
- Under 49
- Average Hourly Rate
- $46/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 6 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCleverCrew Ltd Services
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CleverCrew Ltd Reviews & Testimonials
Web Development Review from Anders Östlund
CleverCrew is great to work with. I have known the company for four years now and worked together for a year and a half. My favorite is that you can tell them to fix anything, and they will. Not these closed boxes with specialities that have become common among certain developers but instead open minds and a "fix-it, and make it work" attitude.
Mobile App Development Review from Brigitte Granger
CleverCrew was recommended to me by a fellow entrepreneur, and I'm so glad I took their advice. Over the course of building my startup, I worked with at least 10 other developers and agencies, but none came close to the professionalism, experience, skill, and friendliness that CleverCrew brought to the table.The lead developer Tonya was outstanding. She balanced understanding our needs with offering thoughtful recommendations to improve the project. Her communication was excellent, and despite major time zone differences, she ensured we were always aligned and informed at every stage. She also demonstrated strong leadership, managing her team with precision and proactively addressing any issues or questions.We ultimately had to make the difficult decision to shut down company. However, having CleverCrew by our side during this challenging time made the process far less painful. Tonya's support and guidance throughout the closure were invaluable, ensuring everything was wrapped up professionally and efficiently.For anyone looking for a reliable, skilled, and collaborative software development partner - especially a bootstrapped startup - I couldn't recommend CleverCrew more. They set the bar for what a development team should be, and I'm grateful for their role in both building and gracefully guiding me through the closure of our mobile app project. I look forward to working with them again in the future!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsMission-Critical Software Engineering & AI Development Firm
Mission-critical software engineering firm in Cincinnati, OH. Founded by an active firefighter and paramedic from the NYC 911 system. We build custom software, mobile apps, and AI platforms for organizations where system failure is not an option...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- WordPress Website Design
- eCommerce Development
- Show more
- Location
- Cincinnati, Ohio
- Number of Employees
- Under 49
- Portfolios Count
- 3 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCodebludev Services
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Codebludev Reviews & Testimonials
Software Development Review from Andrew Rogerson
Codeblu Dev delivers high-quality work in a time-efficient manner. Not only does the team possess good communication skills, but they also exercise initiative when issues arise. They are a knowledgeable partner who is committed to building long-term working relationships.
Software Development Review from Martin Macmillan
Codebludev was able to take our vision and help us deliver an app that empowers retail shareholders to make their voices heard. Theyve brought a depth and breadth of technical expertise and user experience design to challenge us on our assumptions on how people would want to interact with the app. From a mobile development perspective, we wanted to go to market with both an Android and an iPhone simultaneously.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsSpecialized in Methodologies, Products & Services
Novacomp is a leading regional IT services company with over 25 years of experience assisting businesses in their digital transformation through solutions such as IT outsourcing, dedicated teams, IT consulting, staff augmentation, QA and software testing, app development, cloud services and more...
Top Services:
- Software Development
- Mobile App Development
- Software Testing
- IT Services
- Staff Augmentation
- Show more
- Location
- Miami, Florida
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 5 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsNovacomp Services
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Let's Create Digital Success Together!
Edvantis is a data, AI & software engineering partner with over 400 talented professionals operating in Central & Eastern Europe and the USA...
Top Services:
- Software Development
- AI Development
- Big Data Analytics
- Staff Augmentation
- Mobile App Development
- Show more
- Location
- Rzeszów, Poland
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 12 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsEdvantis Services
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Expert in Developing Custom Software, Mobile Apps, and Web Apps for Any Industry Worldwide| B2B
Softexpoit's team of experts combines technical expertise and creativity to develop custom software, mobile app, and web app, backend, mac/windows solutions that meet your specific business/official needs.We understand that every business is different, which is why we offer customized solutions...
Top Services:
- Mobile App Development
- Software Development
- Web Development
- IoT
- Software Testing
- Show more
- Location
- London, United Kingdom
- Number of Employees
- Under 49
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 8 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSoftexpoit Services
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Your business in the cloud.
At Alwa Perú, we revolutionize your business's digital landscape with cutting-edge technological solutions in the cloud. Committed to tailoring technology to your precise requirements, we consistently prioritize optimal value for your investment. Our overarching mission is to streamline your transition to...
Top Services:
- Software Development
- Software Testing
- ERP Consulting
- CRM Consulting
- IT Services
- Show more
- Location
- Lima, Peru
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 3 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAlwa Perú SA Services
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Top 50 Outsourcing Software Development Company in Viet Nam.
Bestarion provides software development consultation services specializing in Healthcare Supply Chain, Financial services for the last 19+ years. We have been successful in outsourcing services and notably in Ruby on Rails, C on Linux and .NET...
Top Services:
- Software Testing
- Cloud Consulting
- Managed Services
- Web Development
- Big Data Analytics
- Show more
- Location
- Ho Chi Minh, Vietnam
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 1 Project Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsBestarion Services
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One Stop Shop for Software Dev, Big Data, AI and Marketing.
We operate with tech teams specialized in designing, developing, testing, deploying and maintaining tailored software to meet the specific needs of its customers, with a range of services related to the software development lifecycle...
Top Services:
- Software Development
- Mobile App Development
- AI Development
- Software Testing
- Big Data Analytics
- Show more
- Location
- Manaus, Brazil
- Number of Employees
- Under 49
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsKaizen Company Services
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Creating Effective Digital Solutions For Complex Challenges
We are Zentix Soft, a UK-founded IT company with offices in Ukraine and Latvia. Our team specializes in full-cycle web development, mobile app development, and custom software solutions. We operate in three models: in-house, outsourcing, and outstaffing, helping clients build efficient and scalable...
Top Services:
- Web Design
- Mobile App Development
- Web Development
- Software Development
- UI/UX Design
- Show more
- Location
- London, United Kingdom
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 1 Project Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsZentixSoft Services
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Digital Transformation & IT Solutions Agency
NetClubbed is a Noida-based web development & digital marketing agency offering custom software, WordPress, Shopify, and white-label development. We help startups, SMBs, and agencies worldwide with SEO-driven websites and scalable digital solutions...
Top Services:
- Web Development
- Software Development
- Software Testing
- Web Design
- eCommerce Development
- Show more
- Location
- Noida, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 3 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsNetclubbed Services
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We're Seeking Forward-Thinking Startups and Companies.
We launched Intrface to help companies and fast-moving startups build the right kind of product through innovation and better UX design...
Top Services:
- UI/UX Design
- Product Design
- Mobile App Development
- Software Development
- Branding
- Show more
- Location
- London, United Kingdom
- Number of Employees
- Under 49
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsIntrface Services
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Technology For Business, Solutions For people
ASEE Group is global technology group. Our companies deliver mission-critical software to 1,200+ clients in 55+ countries. We invest in founder-led software businesses. ASEE Group is part of Asseco Group...
Top Services:
- Cybersecurity
- IT Services
- Engineering
- CRM Consulting
- ERP Consulting
- Show more
- Location
- Warsaw, Poland
- Number of Employees
- 1000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsASEE Group Services
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Frequently Asked Questions About Software Testing Companies
What services do software testing firms provide?
Software testing companies provide different testing services to identify errors, security risks, performance issues, and how the software behaves in real-life situations and across devices. As part of their software testing service, they also check if each feature works as expected, fix bugs, make improvements, and make sure new software development updates don’t break existing functions, so the software quality remains stable.
Core services include:
- Functional testing
- Performance testing
- Security testing
- Usability testing
- Regression testing
- Automation testing
- Accessibility testing
- Mobile app testing
- API testing
- Compatibility testing across devices/browsers
- Compliance testing
- Testing with artificial intelligence (AI) tools
- QA audit
How much do software testing services cost?
Hourly rates for QA testing range from $25 to $200+. The final cost is determined based on the size of the software or application, its complexity, required testing type, tech stack (custom-built and older legacy systems cost more), and niche.
The rate will also depend on the seniority of the software tester. Across the United States, junior quality assurance (QA) tester may charge $70 to $110 per hour, while the rate for a senior QA mentor and automation engineer can range from $130 to $200 per hour.
Special software testing services such as QA audit goes from $5,000 to $25,000.
How can businesses know what type of software testing do they need?
Businesses can determine what type of testing solutions they need based on the potential impact of failures and the likelihood of defects. Namely, if they encounter:
- Core functionality issues: Use functional testing to verify features work as expected
- Unstable code or new features: Use unit testing for individual components and integration testing for modules working together
- Poor system stability after updates: Seek regression testing to make sure new changes didn't break existing features
- Performance and load issues: Use performance and load testing to evaluate speed and scalability
- Security issues: Security and penetration testing are commonly used across apps handling sensitive user data
- Hard-to-navigate user experience (UX): Pursue usability testing to determine how intuitive the application is for end users
- Low compatibility across devices: Compatibility testing can evaluate how good the app works on different browsers, devices, and OS versions
There is also the option to choose between manual and automated testing.
Is automated testing more expensive than manual testing?
As an investment, automated testing is pricier than manual testing but offers a lower cost-per-test over time as it can run the same scripts repeatedly, without human intervention. Conversely, manual testing entails lower upfront fee, but its cost grows linearly as the project grows, as every test cycle requires paid hours from QA testers.
So, for short-term projects or ones with shifting requirements, manual testing is considered a more economical option, whereas for maintenance and regression cycles, automated testing grants better return on investment.
The main distinction between these methodologies is that manual testing relies on human observation and interaction to identify defects, whereas automated testing uses software scripts to compare outcomes against predicted results.
Manual testing is best suited for exploratory testing, usability assessments, ad-hoc bug hunting, and minor hotfix verifications where script development would be inefficient. Automated testing, on the other hand, is primarily used for regression testing to make sure the new code does not break existing features.
How do businesses measure the effectiveness of software testing?
The effectiveness of the software testing is measured via:
- Code coverage: The percentage of the code that has been tested
- Defect density: The number of defects found per unit of code
- Test case effectiveness: The percentage of test cases that identify defects; helps prune redundant and ineffective tests
- Time to detect and fix defects: The time it takes to identify and fix software defects and software bugs
- Defect leakage: The number of bugs that "escaped" to production versus those caught during the testing phase