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 04, 2026

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

Beauty × $25,000 - $50,000 ×
  • Commerce Engineering for Complex B2B Systems

    Commerce engineering for complex B2B systems. ERP, PIM, CRM, OMS and WMS integrations, risk-managed replatforming, and B2B commerce development for manufacturers, distributors and enterprise teams. Adobe Commerce Silver, Shopify Strategic Partner, SFCC, BigCommerce. Founded in 2009...

    Top Services:

    • eCommerce Development
    • Web Development
    • Mobile App Development
    • Software Testing
    • Cloud Consulting
    • Show more
    Location
    Tallinn, Estonia
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    20 Projects Listed

    Elogic Commerce Services

    • eCommerce Development
    • Web Development
    • Mobile App Development
    • Software Testing
    • Cloud Consulting
    • Digital Services
    • UI/UX Design
    • Web Design
    • eCommerce
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • TurcomUSA
    • Bauwerk Colour
    • Watches of Mayfair
    • Millenium
    • Dampfi
    • Amsale
    • Mount-it
    • Marimekko
    • DiggEcard
    • Modest Maillot
    Data sourced from the agency's DesignRush profile

    Elogic Commerce Reviews & Testimonials

    • Hanna Dobromyl
      Hanna Dobromyl Technology Partnerships Lead at Akurateco
      5.0

      eCommerce Review from Hanna Dobromyl

      We brought Elogic in as an extension of our engineering team to help Akurateco scale integrations across Shopify Plus, Adobe Commerce, and custom commerce environments for enterprise merchants. Their senior engineers integrated smoothly into our workflows, covering integration development, platform customization, and technical consulting - with communication that stayed transparent, disciplined, and proactive throughout, from status updates to flagging risks early. Elogic's strength showed most in complex B2B commerce - account structures, merchant-specific configurations, and enterprise buying requirements - and in integrating our stack with ERP, CRM, PIM, and other backend systems. When priorities shifted, they adapted without friction, and for an engagement of this scope, the value was clear: their process lowered hiring risk and let us scale delivery without building that capacity in-house. The impact has been measurable: integration delivery accelerated by roughly 3040%, delivery capacity grew by about 50%, and we've been able to support enterprise merchant requirements faster without expanding headcount. This is an ongoing partnership, and Elogic continues to be a reliable technology partner as we scale.

    • Anna Korobkyna
      Anna Korobkyna Business Development Manager at Protectimus Limited
      5.0

      B2B Review from Anna Korobkyna

      Elogic helped us build and improve the digital experience around our enterprise cybersecurity platform, focusing on customer-facing workflows and a more scalable way for enterprise customers to manage their accounts and services. As our enterprise customer base grew, many processes still required manual involvement from our internal teams, which became difficult to scale. We needed a partner who could understand our business processes and help us build a more efficient and maintainable solution. Elogic supported us with customer portal development, account management workflows, API integrations with our existing systems, backend and frontend development, QA, and ongoing technical improvements. What stood out was their ability to understand the complexity of enterprise requirements and think beyond individual tasks. They focused not only on delivering functionality but also on creating solutions that could support future growth. Communication was clear and proactive throughout the engagement. The team adapted well as priorities evolved and worked closely with us to keep everything aligned. The result has been reduced manual effort in customer workflows, a stronger foundation for scaling enterprise operations, and more time for our internal team to focus on advancing our core security platform. This is an ongoing partnership, and I would recommend Elogic to B2B software companies looking for a technology partner to build scalable customer-facing platforms and complex integrations.

    • Julia Klotsko
      Julia Klotsko Head of Marketing at Panem Agency
      5.0

      eCommerce Development Review from Julia Klotsko

      We brought Elogic in to build a Shopify store from scratch for one of our clients - a project that required not just a clean storefront but deep integrations with NetSuite for ERP and Brightpearl for order management, alongside our full marketing stack. That combination of storefront and backend complexity is exactly where a lot of agencies fall short. Elogic handled it without missing a beat. The discovery phase was thorough - they mapped every integration touchpoint before writing a line of code, which eliminated the kind of mid-build misalignments that usually cost real time and money to fix. Both workstreams ran in parallel and came together cleanly at launch. The results were tangible: over 120 pre-orders in the first two weeks, 40% above target; order processing errors dropped by roughly 70% after Brightpearl automation replaced manual handling; inventory discrepancies between the storefront and NetSuite went to zero; and paid media ROAS improved by 25% in the first month simply because attribution was finally accurate. Project management was disciplined and transparent throughout - we always knew where things stood, and when requirements shifted mid-build, the team adapted without friction. After launch they stayed actively involved, optimising performance and flagging issues proactively rather than waiting to be asked. For a project of this complexity, Elogic delivered strong value for money. I would recommend them to any agency or business dealing with backend system complexity alongside a storefront build - that's where they genuinely stand out.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your Innovation Partner

    Singular is a specialized software development company that thrives on agile methodologies. We excel at leveraging Next Gen technologies, such as Flutter & FlutterFLow, to craft dynamic platforms that are remarkably adaptable, user-friendly, and high-performing...

    Top Services:

    • Software Development
    • Web Design
    • eCommerce Development
    • Web Development
    • UI/UX Design
    • Show more
    Location
    Miami, Florida
    Number of Employees
    50 - 99
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    13 Projects Listed

    Singular Services

    • Software Development
    • Web Design
    • eCommerce Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Osmo
    • Forge
    • Disney
    • Burger King
    • Charli Charging
    Data sourced from the agency's DesignRush profile

    Singular Reviews & Testimonials

    • Brittany  Kernohan
      Brittany Kernohan Founder at Chaîné
      5.0

      eCommerce Development Review from Brittany Kernohan

      I have been working with Singular for two years building a peer to peer e-commerce marketplace. The team is always very responsive and creative; I’ve appreciated their expertise and time.

    • Arthur  Linares
      Arthur Linares CEO at Cannabolt
      5.0

      Mobile App Development Review from Arthur Linares

      Cannabolt provides bitcoin infrastructure for the cannabis industry. Singular Design has delivered high-quality outputs in a timely manner. They've demonstrated stellar project management and communicated effectively via virtual meetings. I'm thrilled with Singular Agency's team.

    • Undisclosed
      Undisclosed Founder at RIMA Network
      1.8

      Flutter Development Review from Undisclosed

      The company has a salesman who overpromised, but once the project started, he was never found to address the underdeliver. Since the first brief, I made clear our products two main selling points. Two years after, I have had to learn some code to look under the hood and discover a half-baked and improvised "solution". Now, I ended up with an incomplete product that fails to deliver the two main functions I requested (and was promised). On top of that, there is a lack of order in terms of naming, cleanliness, and hierarchy. I cant recommend them.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Brewing Tasty Apps With Love

    Appuchino is a mobile software development company with a strong focus on premium app quality and design. What we're good at: a) App development service for businesses. Appuchino addresses companies’ need for high-end mobile apps with user-oriented design. b) Developing our own apps. One of...

    Top Services:

    • Mobile App Development
    • Software Development
    • UI/UX Design
    • Wearables
    • Software Testing
    • Show more
    Location
    Dublin, Ireland
    Number of Employees
    Under 49
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed

    Appuchino Services

    • Mobile App Development
    • Software Development
    • UI/UX Design
    • Wearables
    • Software Testing
    • VR/AR
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Flipdish
    • Axonista
    • Phorest Salon Software
    • Clevr Mobility (GrĂĽv app)
    • Noviscient
    • Higgins & Higgins
    • Runna
    Data sourced from the agency's DesignRush profile
  • Designing and Building Platforms for Your AI Bot Development.

    ISBX (Interactive, Strategy, Branding, Execution) stands as the premier web and mobile application development agency in Southern California, boasting extensive expertise across a diverse spectrum of digital services such as Mobile, Blockchain, IoT, Web3, and Web Development. With a track record of...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Blockchain
    • IoT
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    7 Projects Listed

    ISBX Services

    • Software Development
    • Mobile App Development
    • Web Development
    • Blockchain
    • IoT
    • UI/UX Design
    • Web Design
    • Wearables
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Apple
    • RedBull
    • Lexus
    • American Honda
    • Brain Corp
    • Science 37
    • WAG!
    • USC
    • Pasco Scientific
    Data sourced from the agency's DesignRush profile

    ISBX Reviews & Testimonials

    • Peggy McCabe
      Peggy McCabe Review from Google
      5.0

      Peggy McCabe's Review Sourced from Google

      ISBX is a very professional and talented web development company. The overall experience I had with them in the redesign of our website was outstanding. They were extremely creative, provided viable options at all junctures, and delivered on time and on budget. ISBX also provided a very hands-on, and professional team who understood our need for brand engagement and outreach to a new audience with our website refresh. The team also optimized the new site for mobile usage which was very important to us. ISBX successfully executed our complex project efficiently, with excellent communication and attention to detail at every step. I wouldn't hesitate to work with them again.

    • Kim Farley
      Kim Farley Review from Google
      5.0

      Kim Farley's Review Sourced from Google

      ISBX helped us from concept to launch without any issues. They were communicative, patient, and able to quickly implement solutions to project changes that came up along the way. We appreciate that they took the time to hold our hands with explanations and detailed questions to make the process as stress free as possible and to get a good understanding of our product.

    • Tony Alfaro
      Tony Alfaro Review from Google
      5.0

      Tony Alfaro's Review Sourced from Google

      I've been a client of ISBX for nearly three years. They are hands down the best development firm I have ever worked with. They are on budget and on time consistently. They are trustworthy, highly communicative, and very versatile. Nothing is in the "too hard box" for them.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Innovation Technology Solution.

    Desun Technology Pvt. Ltd. is a leading software development company in Kolkata, specializing in comprehensive IT services, including web development and mobile app development. Our cutting-edge technology solutions empower businesses to thrive in the digital era. Elevate your business with Desun Technology...

    Top Services:

    • Web Development
    • Digital Services
    • Branding
    • eCommerce Development
    • Mobile App Development
    • Show more
    Location
    Kolkata, India
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    $25,000 - $50,000

    Desun Technology Pvt. Ltd. Services

    • Web Development
    • Digital Services
    • Branding
    • eCommerce Development
    • Mobile App Development
    • Software Development
    • Software Testing
    • Staff Augmentation
    • DevOps Consulting
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Aryabhatt Polytechnic
    • Bengal Law College
    • Castle Realty Zone
    Data sourced from the agency's DesignRush profile

    Desun Technology Pvt. Ltd. Reviews & Testimonials

    • Akhil Ahire
      Akhil Ahire Business Systems Analyst at Berkadia
      5.0

      Web Development Review from Akhil Ahire

      The Desun Technology team is a true partnership. They take the time to understand the business requirements behind our specifications in order to solve/build solutions that best fit our needs. The team is great with communication and proactively checking in with us. The development team is great - open to constructive feedback - and dedicated to quickly releasing new elements of our application.

    • Akhil Ahire
      Akhil Ahire Business Systems Analyst at Berkadia
      5.0

      Web Development Review from Akhil Ahire

      The Desun Technology team is a true partnership. They take the time to understand the business requirements behind our specifications in order to solve/build solutions that best fit our needs. The team is great with communication and proactively checking in with us. The development team is great - open to constructive feedback - and dedicated to quickly releasing new elements of our application.

    • Brittany Melanson
      Brittany Melanson Senior Graphic Designer and Marketing Coordinator at CHC Solutions, Inc.
      5.0

      Mobile App Development Review from Brittany Melanson

      The team at Desun Technology including my amazing project/product manager went above and beyond and exceeded all expectations from start to finish. I could not speak more highly of them!! They have proven to be dedicated, passionate, highly skilled and very knowledgeable so my experience to date has been nothing short of fantastic! A special thanks to their (Project/Product Manager) and the design/development team for making my project a great success!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your Trusted Software Development Company In Malaysia.

    A bespoke software development company specializing in custom software development with exceptional UX/UI design for a high quality user experience journey!...

    Top Services:

    • Software Development
    • Software Testing
    • Mobile App Development
    Location
    Petaling Jaya, Malaysia
    Number of Employees
    Under 49
    Average Hourly Rate
    $37/hr
    Minimal Budget
    $25,000 - $50,000

    Red Ant Technology Services

    • Software Development
    • Software Testing
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Panasonic
    • Epson
    • Great Eastern
    • Prudential
    Data sourced from the agency's DesignRush profile

    Red Ant Technology Reviews & Testimonials

    • Jang Ryan
      Jang Ryan Review from Google
      5.0

      Jang Ryan's Review Sourced from Google

      The team at Red Ant Technology was a pleasure to work with. they were professional, efficient, and the quality of their work was excellent. We reengaged them to support us post-deployment and would highly recommend them.

    • carmen tmy
      carmen tmy Review from Google
      5.0

      carmen tmy's Review Sourced from Google

      Red Ant Technology is reliable and professional. The team really deliver quality product. We appreciate their attention to detail and fast respond. Highly recommended for anyone looking for customize solution.

    • yip chelsia
      yip chelsia Review from Google
      5.0

      yip chelsia's Review Sourced from Google

      Great team to work with! Red ant technology has been a fantastic partner for our software development needs. Their team is reponsive and understands how to build software that work. From initial discussion to project delivery, the process was smooth and well managed. Their attention to detail and solid technical expertise really set them apart.

    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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