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.
Simplifying life through innovation
At Linnify, we help visionary companies accelerate their digital development efforts. From growing startups to tech-driven organizations, we support you in defining, designing, building, and successfully launching on time through dedicated product teams...
Top Services:
- Software Development
- Web Development
- AI Development
- Mobile App Development
- Staff Augmentation
- Show more
- Location
- Cluj-Napoca, Romania
- Number of Employees
- Under 49
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsLinnify Services
Data sourced from the agency's DesignRush profileReadability drd Joyscore Stailer NEWtritionIQ Medefine
Linnify Reviews & Testimonials
GABRIEL SINCRAIAN's Review Sourced from Google
I worked with a few freelancers before and only had headaches. Since I discovered Linnify, everything has been going smoothly. They are professional, deliver exactly what they promise, and the app works flawlessly. Everyone is happy. I recommend!
Camil Moldoveanu's Review Sourced from Google
Linnify has been a reliable partner in our software development journey, providing excellent quality and innovative solutions. This is why we built this collaboration based on expertise trust. Their development team is knowledgeable and attentive, enhancing our user experience significantly. We recommend Linnify to anyone looking for one of the best product development companies in Cluj.
Paul Oarga's Review Sourced from Google
Great solutions, incredible team and enviable work ethic. Highly recommend them for any tech product, branding or idea you want to boost into reality.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsSoftware Development With A Customized Approach.
Accelerate your business growth with our innovative software solutions. We combine cutting-edge technology, tailored strategies, and seamless execution to drive your success and stay ahead of the competition...
Top Services:
- Web Design
- Web Development
- Software Testing
- Mobile App Development
- Software Development
- Show more
- Location
- Calgary, Canada
- Number of Employees
- Under 49
- Average Hourly Rate
- $179/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsZelio Services
Data sourced from the agency's DesignRush profileAll-Can Engineering Revux Flownest
Software Testing Specializations
Services Related to Software Testing
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Why companies trust DesignRush
Every agency is independently vetted before it can be listed or ranked
Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.
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

