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.
Challenges Accepted. Solutions Delivered.
Sigma Design integrates design, engineering, and manufacturing capabilities under one roof. That co-location enables rapid prototyping, rigorous testing, and quality assurance in one place, lets us own a significant portion of the supply chain internally, and produces quick feedback loops and streamlined...
Top Services:
- Design Services
- Product Design
- Wearables
- IoT
- Software Testing
- Show more
- Location
- Camas, Washington
- Number of Employees
- 250 - 499
- Minimal Budget
- $50,000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSigma Design Services
Data sourced from the agency's DesignRush profileLens Crafters LAIKA Accufit Daimler Trucks
Sigma Design Reviews & Testimonials
Vitas V's Review Sourced from Google
Sigma Design is a great engineering consultant for commercial and consumer level electronics product design and prototyping I would highly recommend working with them.
Gary Stetson's Review Sourced from Google
Have a vision for an electronic device or machine? These guys help with that. Very good team of engineers.
Dave Barcos's Review Sourced from Google
Excellent professionals. It's not often you find a group of professionals with the breadth of knowledge at their level.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsSucceed Faster with Syberry.
Austin-based Syberry builds custom software that companies own outright, replacing costly SaaS tools, modernizing legacy systems, and putting AI to work with people firmly in control. Since 2011, our team has shipped 300+ solutions for startups and Fortune 200 brands. A distinctive delivery process, run on...
Top Services:
- Software Development
- Mobile App Development
- AI Development
- Cloud Consulting
- IoT
- Show more
- Location
- Austin, Texas
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $50,000 & Up
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSyberry Services
Data sourced from the agency's DesignRush profileCrux Chipply GiveMeTheWin.com Goodwin & Co. JLL Bridgewater THG Energy Solutions Verified Credentials Broadridge Daimler Truck
Syberry Reviews & Testimonials
Andrew Stanifer's Review Sourced from Google
I cannot say enough good things about Syberry and the experience I had with them! The entire team was extremely customer focused and incredible to work with. They will without out a doubt be our continued partner and go-to for any future software development!
Parker Collins's Review Sourced from Google
Syberry is the best! I can't even find the words to express how happy I am with my experience. This was the first time my company created a customized program, so I was initially very hesitant and apprehensive about the project. Syberry helped us transform a very lengthy and involved Excel sheet containing a large volume of important and sensitive information into a program that streamlined a complex process into a highly efficient system. Rudy was my main point of contact, and he was with me every step of the way. I can't say enough good things about the team we worked with to develop the program. By the end of the project, it was very sad to see them go. We looked forward to our weekly meetings with our dedicated Syberry team. I already have plans to start another project with Syberry and am looking forward to it! Thank you again, Syberry Team! You are all the best!
Jose Basa's Review Sourced from Google
We've done multiple projects with Syberry and found them to be professional and effective. They utilize current development methodologies and have solid project management. They were able to deliver timely work and stay within budget - areas where other offshore firms I've used struggle. I highly recommend them for any of your future technical projects.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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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.Â
Core services include:Â
- Functional testing Â
- Performance testing Â
- Security testing Â
- Usability testing Â
- Regression testing Â
- Automation testing Â
- Accessibility testing  Â
- Mobile app testing Â
- API testing Â
- Compatibility testing across devices/browsers Â
- Compliance testing Â
- Testing with artificial intelligence (AI) tools
- QA auditÂ
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. Â
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. Â
Special software testing services such as QA audit goes from $5,000 to $25,000.Â
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:Â Â
- Core functionality issues: Use functional testing to verify features work as expectedÂ
- Unstable code or new features: Use unit testing for individual components and integration testing for modules working togetherÂ
- Poor system stability after updates: Seek regression testing to make sure new changes didn't break existing featuresÂ
- Performance and load issues: Use performance and load testing to evaluate speed and scalabilityÂ
- Security issues: Security and penetration testing are commonly used across apps handling sensitive user dataÂ
- Hard-to-navigate user experience (UX): Pursue usability testing to determine how intuitive the application is for end usersÂ
- Low compatibility across devices: Compatibility testing can evaluate how good the app works on different browsers, devices, and OS versionsÂ
There is also the option to choose between manual and automated testing. Â
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. Â
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.Â
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. Â
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.Â
How do businesses measure the effectiveness of software testing?
The effectiveness of the software testing is measured via:Â
- Code coverage: The percentage of the code that has been testedÂ
- Defect density: The number of defects found per unit of codeÂ
- Test case effectiveness: The percentage of test cases that identify defects; helps prune redundant and ineffective testsÂ
- Time to detect and fix defects: The time it takes to identify and fix software defects and software bugsÂ
- Defect leakage: The number of bugs that "escaped" to production versus those caught during the testing phase Â

