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

4 Companies-Rankings updated: September 04, 2026

Every agency on DesignRush has been evaluated for its expertise and client feedback to empower informed choices. Some listings include paid partnerships.

Food and Beverage × $50,000 & Up ×
  • Sports Betting Software Development Company | Sports Betting Solution

    Sports Betting Soft is a leading iGaming technology provider delivering tailored sports betting and casino software solutions for both startups and established operators. We specialize in building innovative, reliable, and high-performance platforms designed to meet unique client needs and exceed in...

    Top Services:

    • Mobile App Development
    • Graphic Design
    • eCommerce Development
    • Web Development
    • Blockchain
    • Show more
    Location
    Borehamwood, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    10 Projects Listed

    Sports Betting Soft Services

    • Mobile App Development
    • Graphic Design
    • eCommerce Development
    • Web Development
    • Blockchain
    • Software Development
    • Staff Augmentation
    • IT Services
    • Software Testing
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • BET IT BEST
    • EAGLE BET
    • BetMonkey
    • Land-Mark-Co
    • MyHss
    • VMV
    • WSB
    • DBB
    • JARLON GROUP
    • FLYBET
    Data sourced from the agency's DesignRush profile

    Sports Betting Soft Reviews & Testimonials

    • Kundan B
      Kundan B COO at Bet Monkey
      4.8

      Web Development Review from Kundan B

      Had an Awesome Experience with the team at SBS. After Fiverr and Freelancer.com bad experience I got my product ready with Sports Betting Soft. and Special thanks to the team for the friendly support after launch.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • YOUR IOT PARTNER

    Indeema is a global IoT engineering company. Our team works across the entire technology stack, including firmware development, electronics engineering, cloud platforms, data processing, and web and mobile applications...

    Top Services:

    • Software Development
    • IoT
    • Mobile App Development
    • Wearables
    • AI Development
    • Show more
    Location
    Wroclaw, Poland
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    8 Projects Listed

    Indeema Software Services

    • Software Development
    • IoT
    • Mobile App Development
    • Wearables
    • AI Development
    • Software Testing
    • Web Design
    • IT Services
    • DevOps Consulting
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • UDB
    • Viking Scada
    • Ads blocker
    • UBreez
    • Dol-Sensors
    • Alice
    • ShotKam
    • Dog Cloud
    • iReDS
    Data sourced from the agency's DesignRush profile

    Indeema Software Reviews & Testimonials

    • Ted Selden
      Ted Selden COO at TouchMD
      5.0

      Mobile App Development Review from Ted Selden

      They actually suggest things to us. They find better ways of doing things, so they really strive to give their input and their suggestions, which is really nice rather than just building something we are asking them to build.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Product, engineering, and AI partner for high-growth companies.

    OAK'S LAB is a product, engineering, and AI partner for high-growth companies, not a generic dev shop. We embed alongside product teams to design, build, and scale production software, with deep experience in regulated industries: finance, healthcare, cybersecurity, and education...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • AI Development
    • Show more
    Location
    Prague, Czech Republic
    Number of Employees
    50 - 99
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed

    OAK'S LAB Services

    • Software Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • AI Development
    • Web Design
    • Software Testing
    • Digital Services
    • Branding
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • NASDAQ Private Market
    • PlexTrac
    • Vette
    • Crave
    • Capital Markets Gateway
    • Karus
    • Plotify
    • Storyvine
    • West Tenth
    • Dot Residential
    Data sourced from the agency's DesignRush profile

    OAK'S LAB Reviews & Testimonials

    • Aydar Ageev
      Aydar Ageev Review from Google
      5.0

      Aydar Ageev's Review Sourced from Google

      It's probably a wonderful feeling to go to work, being able to feel the tourist hustle and hear the sound of the clock from the Old Town Square.

    • Aleksandar Chernev
      Aleksandar Chernev Review from Google
      5.0

      Aleksandar Chernev's Review Sourced from Google

      Such an awesome event. It was so well organized and I was so pleased to meet Oak’s Lab awesome team.

    • Adam Mazouz
      Adam Mazouz Review from Google
      5.0

      Adam Mazouz's Review Sourced from Google

      This was one of the best meetups of the year for me. The ambiance, the vitality, and the community they brought together. P.S: The office location is winning big times.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Accelerate Velocity With Elite Engineers and Agile Experts.

    Distillery is a seasoned player in the field of nearshore software development, offering expertise and a robust process for building, scaling, and innovating technology solutions...

    Top Services:

    • Software Development
    • Mobile App Development
    • Software Testing
    • Blockchain
    • IoT
    • Show more
    Location
    Manhattan Beach, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    6 Projects Listed

    Distillery Services

    • Software Development
    • Mobile App Development
    • Software Testing
    • Blockchain
    • IoT
    • Web Design
    • Web Development
    • IT Services
    • Product Design
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Savyint
    • Redbull
    • Sincplicity
    • 5 Miles app
    • U-Nest
    • Tala
    • nÄ“dl
    • Samsung SMT
    Data sourced from the agency's DesignRush profile

    Distillery Reviews & Testimonials

    • denny stearns
      denny stearns Review from Google
      5.0

      denny stearns's Review Sourced from Google

      I bought the Carmela the other day. It is smoky, with burnt Carmel, marshmallow taste and smell. This is not my type of whiskey. I like smoke but there was something that disagreed with me. So this line is not my cup of... whiskey. Looking forward to trying their Bourbon and will update my tasting experience. The R6 distillery reached out to me which shows they care about their product. That goes far with me.Update... I have now tasted the R6 Distillery Bourbon Whiskey. Very pleasant to the nose with light vanilla. Taste is smooth and not sharp. The taste is in my wheelhouse of Bourbons. Sweet, smooth vanilla, light Carmel. I hear you can get a bottle at COSTCO and i saw one on the shelf at the local convenience store in Gundo. I would recommend it.

    • Inna Worrall
      Inna Worrall Review from Google
      5.0

      Inna Worrall's Review Sourced from Google

      Great quality!We received selection of bourbons as a splendid gift from our friend. That was a first time we tried this product. We tested and tested different ones and enjoyed it so much, but did not have even a hint of a headache next morning! Amazing!

    • Victor Alpha
      Victor Alpha Review from Google
      5.0

      Victor Alpha's Review Sourced from Google

      Great speakeasy, fine spirits, nice atmosphere. Drawback is licensing restrictions - only one cocktail or 1.5 oz total in spirits. Beers are unlimited. Another flaw is when a private event is scheduled, no notice is posted on the website, meaning if you’re traveling here from afar, you will have to travel right back spiritless and hopless.Edit: When I checked the website I did not see the notice about the private event. If you say it was posted, then it was my fault for not being thorough. Also, the state did not want your missing stars and I have too many myself. They are all yours. And the gin was delicious. Cheers!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews

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  

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