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

7 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.

Electronics × $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
  • Experts at Your Service

    Alt Digital Technologies is a B2B service provider servicing end to end development, DevOps, Testing and e-commerce solutions for your business. We work efficiently in ATG, Java, React, Salesforce, WordPress and majorly all technologies...

    Top Services:

    • Web Development
    • eCommerce Development
    • Mobile App Development
    • Software Development
    • Software Testing
    • Show more
    Location
    Florida City, Florida
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    8 Projects Listed

    Alt Digital Services

    • Web Development
    • eCommerce Development
    • Mobile App Development
    • Software Development
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Boeing Co
    • Etisalat
    • Neiman Marcus
    Data sourced from the agency's DesignRush profile

    Alt Digital Reviews & Testimonials

    • Undisclosed
      Undisclosed Product Manager at Aerospace Company
      5.0

      Web Development Review from Undisclosed

      It is a feeling of both ecstasy and pride to know that all these years of hard work from our team has delivered a website which is delivering a powerful experience designed to meet the needs of our distribution customers. I am proud of our team's effort and also to be a part of this team.

    • Undisclosed
      Undisclosed Product Owner at Manufacturing Company
      5.0

      Software Development Review from Undisclosed

      You guys are one of the most wonderful people to work with. And most supportive, hardest working. We couldn’t have done what we’ve done in the past 2+ years without this team. Don’t ever forget it your value. You’re absolutely brilliant. It’s been such an honor to be your PO.

    • Undisclosed
      Undisclosed Senior Manager, IT at Aerospace Company
      5.0

      Mobile App Development Review from Undisclosed

      I preferred Alt Digital Technologies over big companies because of the quality and the stability of their people.

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

    Your Digital Innovation Partner. Accelerating innovation through AI, software development, and digital transformation.At Rootstack, we help organizations build scalable digital products, modernize operations, and unlock new business opportunities through technology...

    Top Services:

    • Web Development
    • Software Development
    • Mobile App Development
    • Managed Services
    • Software Testing
    • Show more
    Location
    Panama City, Panama
    Number of Employees
    100 - 249
    Average Hourly Rate
    $60/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    42 Projects Listed

    Rootstack Services

    • Web Development
    • Software Development
    • Mobile App Development
    • Managed Services
    • Software Testing
    • IT Services
    • DevOps Consulting
    • eCommerce Development
    • Big Data Analytics
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • LG
    • Heineken
    • Canon
    • Sura
    • AmCham Panamá
    • IOM
    • Universidad del Rosario
    • Smithsonian Institution
    • BAC
    • AtlasBank
    Data sourced from the agency's DesignRush profile
  • Your Partners in Success.

    Quest Global Technologies is a global leader in development & consultation of cutting-edge Blockchain, Metaverse, AR/VR, QA, Automation, Salesforce & Web3 advancements...

    Top Services:

    • Blockchain
    • AI Development
    • Digital Marketing
    • IT Services
    • Business Consulting
    • Show more
    Location
    Indore, India
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    6 Projects Listed

    Quest Global Technologies Ltd Services

    • Blockchain
    • AI Development
    • Digital Marketing
    • IT Services
    • Business Consulting
    • Software Testing
    • VR/AR
    • Software Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • RadioShack
    • Shiba Inu coin
    • Rowan Energy
    • Taboo Token
    • Yuse Token
    Data sourced from the agency's DesignRush profile

    Quest Global Technologies Ltd Reviews & Testimonials

    • Crystal Heetai
      Crystal Heetai Marketing Coordinator at Ayalytical Instruments, Inc.
      5.0

      Mobile App Development Review from Crystal Heetai

      We hired Quest Global to help build our technical infrastructure from scratch, including a customized blockchain solution, mobile and web app development, and an admin panel. They provided valuable feedback and questioning to direct us and set up the right infrastructure. Overall, I'm satisfied with their work and would highly recommend them.

    • Amy DeFaveri
      Amy DeFaveri Content Marketing Manager at GuidePoint Security
      5.0

      Mobile App Development Review from Amy DeFaveri

      Another company had started the project, so Quest Global picked it up, improved it, and completed it. They did 90%95% of the project. They had all the skills we needed, good technical expertise, reasonable pricing, and they could deliver the project on time. All in all, they were a boutique developing company wed work with the decision-makers and get a high level of service.

    • Paul Driedger
      Paul Driedger Owner at EcoGreen Landscaping LLC
      5.0

      IoT Review from Paul Driedger

      We have been thoroughly impressed with Quest Global Technologies Ltd and their innovative AI solutions for the railroad industry. From predictive maintenance to real-time performance analytics, their team has truly transformed our operations. Their in-depth understanding of the industry's challenges, combined with their advanced technological capabilities, allowed them to tailor solutions that have significantly improved our efficiency and safety.The integration of AI tools has led to optimized train scheduling, minimized downtime, and more accurate decision-making, directly impacting our bottom line. Moreover, Quest Global Technologies Ltd provided continuous support and expert advice throughout the project, ensuring a seamless implementation.The professionalism, expertise, and dedication of their team make them a standout partner. If you're looking for AI solutions that bring real, measurable improvements, we highly recommend Quest Global Technologies Ltd.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Software Development And AI Solutions For Businesses

    Agmis delivers AI and custom software solutions for manufacturing, retail, logistics, and healthcare. Since 2007, we've served 50+ countries with computer vision for quality control, PPE detection, warehouse management, and production planning...

    Top Services:

    • AI Development
    • Software Development
    • Software Testing
    • CRM Consulting
    • Show more
    Location
    Kaunas, Lithuania
    Number of Employees
    50 - 99
    Minimal Budget
    $25,000 - $50,000

    Agmis Services

    • AI Development
    • Software Development
    • Software Testing
    • CRM Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • KrattWorks
    • DPD
    • BGS
    • Feetsee
    Data sourced from the agency's DesignRush profile
  • Coderus - Building Smart Code Solutions for the Future

    Coderus is a leading software and app development company based in the UK, and we provide services to start-ups, medium businesses, and large blue-chip enterprises globally...

    Top Services:

    • Mobile App Development
    • IoT
    • Software Development
    • Software Testing
    • Design Services
    • Show more
    Location
    Martlesham, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed

    Coderus Services

    • Mobile App Development
    • IoT
    • Software Development
    • Software Testing
    • Design Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • INEOS Team UK (America's Cup)
    • Bowers & Wilkins
    • ELGA Veolia
    • Land Rover BAR
    • Frontier Silicon
    Data sourced from the agency's DesignRush profile

    Coderus Reviews & Testimonials

    • Petra Napthine
      Petra Napthine Review from Google
      5.0

      Petra Napthine's Review Sourced from Google

      I completed my work experience from the 8th - 12th of July at Coderus. I learnt lots during the week and everyone was very helpful and friendly. I'd recommend this to anyone interested in app development as its a great way to learn about the industry.

    • Emil Aby
      Emil Aby Review from Google
      5.0

      Emil Aby's Review Sourced from Google

      I attended work experience at Coderus from 1st-5th July. It was a great experience, i particularly enjoyed creating my own app. Would definitely recommend.

    • Daniel Healy
      Daniel Healy Review from Google
      5.0

      Daniel Healy's Review Sourced from Google

      Coderus are an excellent team. I've worked with them on 5 projects now, all of which were clearly laid out, tracked and delivered, from start to finish.They're always happy to work to our expectations, cater to the specific needs of the business, and provide training on the tools they create upon delivery.

    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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