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

6 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.

Legal × Under $1,000 ×
  • Translation is in our DNA.

    We are a small boutique agency dedicated to medical, technical, fintech, IT and automotive translation, localization and quality assurance services...

    Top Services:

    • Translation Services
    • Business Consulting
    • Software Testing
    • eCommerce
    • Web Development
    • Show more
    Location
    Athens, Greece
    Number of Employees
    Under 49
    Average Hourly Rate
    $1/hr
    Minimal Budget
    Under $1,000

    MTLT Services

    • Translation Services
    • Business Consulting
    • Software Testing
    • eCommerce
    • Web Development
    • UI/UX Design
    • Digital Services
    • Video Production
    • AI Development
    • Graphic Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Meta
    • United Language Group
    • Little Onion Design
    • Binance
    Data sourced from the agency's DesignRush profile

    MTLT Reviews & Testimonials

    • Helena Kotoula, she/her/hers
      Helena Kotoula, she/her/hers Translator at Eleni Kotoula translation and interpretating services
      5.0

      Translation Services Review from Helena Kotoula, she/her/hers

      MLTI is an outstanding choice for high-quality translation services. Their accuracy and professional approach truly stand out, ensuring that every project is delivered with utmost precision and reliability. Their pricing is competitive, offering excellent value for money without compromising quality. Additionally, their speed and adherence to deadlines are remarkable, making them a trusted partner for time-sensitive projects. I highly recommend MLTI for anyone seeking dependable and efficient translation services. Their commitment to excellence is evident in every aspect of their work.

    • Elissavet Botsaki, BA, MA, Greek Localization Specialist
      Elissavet Botsaki, BA, MA, Greek Localization Specialist Linguist at Welocalize
      5.0

      Translation Services Review from Elissavet Botsaki, BA, MA, Greek Localization Specialist

      My collaboration with Popie and the MTLT team overall has been an exciting and professional one since day one when we started the project. Although our demands were high and the timeframe very tight, the team managed to exceed our expectations with their professionalism and the execution of their structured plan. It is quite impressive to see that, in uncertain times like ours, there are still professionals who don't sacrifice quality.

    • Georgina Razack
      Georgina Razack Co-Founder at Little Onion Design
      5.0

      Website Translation Review from Georgina Razack

      I couldnt be more impressed with the translation services provided by MTLT. Their professionalism, attention to detail, and seamless communication made the entire process smooth and efficient. They not only delivered high-quality translations but also worked collaboratively with us to ensure the tone and message of our website remained consistent across languages. The teams expertise and commitment to excellence were evident throughout, and I highly recommend them for any translation needs!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Microsoft Solutions Partner & Software Consultants

    Code Creators is a dynamic SharePoint development company that specializes in creating innovative solutions for businesses worldwide. With a comprehensive range of services, we offer SharePoint consulting, custom Power BI development, mobile app & web application development, IT consulting...

    Top Services:

    • Web Development
    • Mobile App Development
    • Software Development
    • Big Data Analytics
    • AI Development
    • Show more
    Location
    Mississauga, Canada
    Number of Employees
    100 - 249
    Minimal Budget
    Under $1,000

    Code Creators Services

    • Web Development
    • Mobile App Development
    • Software Development
    • Big Data Analytics
    • AI Development
    • eCommerce Development
    • Web Design
    • IoT
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Ther App
    • BSEM
    • Khadamati App
    Data sourced from the agency's DesignRush profile

    Code Creators Reviews & Testimonials

    • Web Creativity Solution
      Web Creativity Solution Review from Google
      5.0

      Web Creativity Solution's Review Sourced from Google

      Code Creators is the best in its field and very professional. They are the best provider of SharePoint and mobile app development services. I can only recommend them to everyone.

    • Scott Ruiz
      Scott Ruiz Review from Google
      5.0

      Scott Ruiz's Review Sourced from Google

      I had a great experience working with Code Creator. They took my vision for a mobile app and turned it into a reality. Along with Support is quite good and always available to Answer for helping customers. I highly recommend using Code Creators for those whose are looking for mobile app design services.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Expand Your Business on a Global Scale.

    At Terratra, we focus on quality, using advanced technology to deliver exceptional translation services. Our innovative solutions help businesses overcome language barriers and expand globally with confidence...

    Top Services:

    • Audio Production
    • Digital Strategy
    • Branding
    • UI/UX Design
    • CRO
    • Show more
    Location
    Maardu, Estonia
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    Under $1,000

    Terratra Services

    • Audio Production
    • Digital Strategy
    • Branding
    • UI/UX Design
    • CRO
    • SEO
    • Translation Services
    • Transcription Services
    • Software Testing
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • InnoLaw
    • GRMN CONNECT OĂś
    • Microsoft
    • ASOS
    • Amazon
    Data sourced from the agency's DesignRush profile

    Terratra Reviews & Testimonials

    • Antje Mertz
      Antje Mertz Review from Google
      5.0

      Antje Mertz's Review Sourced from Google

      Terratra was one of my first clients when I started working as a freelance translator full-time. I appreciate their detailed instructions, responsiveness and swift payment. I can't think of a better client to start out with, and will gladly continue to work with them in the future.

    • Guilherme De Faria Martins Da Silva
      Guilherme De Faria Martins Da Silva Review from Google
      5.0

      Guilherme De Faria Martins Da Silva's Review Sourced from Google

      Great company to work for, reliable, pays on time and offers great projects! Olga is an amazing PM!

    • Christina Passenger-Tarapata
      Christina Passenger-Tarapata Review from Google
      5.0

      Christina Passenger-Tarapata's Review Sourced from Google

      I can really recommend Terratra, over several months I got to know them as a very professional company with a high focus on quality, timely payments and also fantastic communication and organisational skills - special thanks to project manager Olga.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • We help our clients grow their business online

    We help our clients grow their business online...

    Top Services:

    • Web Design
    • eCommerce Development
    • Software Development
    • SEO
    • Software Testing
    • Show more
    Location
    Giza, Egypt
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    Under $1,000

    oxnary Services

    • Web Design
    • eCommerce Development
    • Software Development
    • SEO
    • Software Testing
    • Mobile App Development
    • Digital Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Lawyerito
    • Youregyptours
    • Attachtap
    • Helloyou
    • Roseteddy
    • Rosaco
    • Cargo Plus
    • Admabs
    • AntEgypt
    • Brilliantcert
    Data sourced from the agency's DesignRush profile
  • Making your business ideas come true

    Etech All is a leading software development company specializing in creative web design and robust web development solutions. We help businesses build a powerful online presence through innovative, user-focused, and results-driven digital experiences. Our expert team delivers customized, high-quality...

    Top Services:

    • Web Development
    • WordPress Website Design
    • Mobile App Development
    • Software Development
    • Software Testing
    • Show more
    Location
    Miami, Florida
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000

    Etech All Services

    • Web Development
    • WordPress Website Design
    • Mobile App Development
    • Software Development
    • Software Testing
    • IT Services
    • eCommerce Development
    • Web Design
    • Logo Design
    • Digital Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • True Legacy
    • Comfort Mobility
    • Solora
    Data sourced from the agency's DesignRush profile
  • Building Digital Growth.

    At LN Solutions , our mission is simple: to empower businesses with the tools and strategies they need to succeed online. Whether it's creating stunning websites, implementing effective digital marketing campaigns, or developing custom software solutions, we are here to help our clients achieve their goals...

    Top Services:

    • Digital Services
    • Web Development
    • Social Media Marketing
    • eCommerce
    • AI Development
    • Show more
    Location
    Schaumburg, Illinois
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000

    LN Solutions Services

    • Digital Services
    • Web Development
    • Social Media Marketing
    • eCommerce
    • AI Development
    • Software Development
    • Mobile App Development
    • Software Testing
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Modus Tech
    • PatentOAResponse
    • Shah Trading Company
    • Mark Distributor
    • Gokul Wholesale
    • SP Inventory
    • Huntley Crossing Luxury Apartments
    • Patel Jewelers
    • Luv2Smoke
    • Armanetti's Wine and Spirit Huntley
    Data sourced from the agency's DesignRush profile

    LN Solutions Reviews & Testimonials

    • Bob patel
      Bob patel Review from Google
      5.0

      Bob patel's Review Sourced from Google

      Great digital marketing service for my hotel and liquor store.had a wonderful experience with the whole team.highly recommended for social media marketing

    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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