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.
Best Software Testing Firms
2 Companies-Rankings updated: September 03, 2026
Every agency on DesignRush has been evaluated for its expertise and client feedback to empower informed choices. Some listings include paid partnerships.
Lion Solution helps businesses customize SuiteCRM around real sales, customer service, marketing, and operational workflows. As an official SuiteCRM partner, we deliver CRM consulting, development, integrations, migrations, automation, reporting, and long-term support. We also bring AI into CRM processes...
Top Services:
Software Development
Software Testing
AI Development
Mobile App Development
Show more
Location
Padua, Italy
Number of Employees
Under 49
Average Hourly Rate
$100/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
5 Projects Listed
Lion Solution Srl Services
Software Development
Software Testing
AI Development
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Almaviva
Teddy Group
Andrea Bizzotto
MEP Group
Sirius
ZECA
SiglaCredit
Provet Lab
CSPFea
QFP
Data sourced from the agency's DesignRush profile
Lion Solution Srl Reviews & Testimonials
MAP360 SRL Review from Google
5.0★
MAP360 SRL's Review Sourced from Google
We turned to Lion Solution for a customized solution, and with Suite CRM, we achieved our business goals. High-level consulting and support.
Matteo Daolio Review from Google
5.0★
Matteo Daolio's Review Sourced from Google
Immediate and attentive assistance, with great willingness to follow you step by step to familiarize yourself with the system and its updates.
Federico Mazzucchelli Review from Google
5.0★
Federico Mazzucchelli's Review Sourced from Google
Without a doubt, an excellent experience. The project was followed down to the smallest detail, from the initial explanation of our needs to the perfect import of the vast amount of data we had in a thousand Excel spreadsheets. Delivery was very quick, even a few days earlier than expected (which was, after all, a very short timeframe). Immediate post-sales support for the countless changes that annoying customers like me require. Now I have a work tool that allows me to monitor all my business activities at an excellent price, much lower than "renowned" solutions. I also used the email integration to quickly import new leads. Well done, highly recommended not only for their work style, but also for the results. We've been partnering with them for three years.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We are a Swedish/Bosnian award-winning agency specializing in IT outsourcing and end-to-end software development. With 85 experts on our team, we work with ventures and established companies to turn ideas into functional, high-quality products...
Top Services:
Web Development
Mobile App Development
Software Development
IT Services
eCommerce Development
Show more
Location
Gothenburg, Sweden
Number of Employees
50 - 99
Average Hourly Rate
$60/hr
Minimal Budget
$10,000 - $25,000
ZenDev AB Services
Web Development
Mobile App Development
Software Development
IT Services
eCommerce Development
Staff Augmentation
DevOps Consulting
Software Testing
IoT
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
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
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
ReceiveProposals
For your project
1
Specify your budget, timeline and project requirements
2
Our experts curate a list of up to 5 most qualified candidate agencies
3
We connect you with them so you can choose the most suitable partner