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.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
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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
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- Location
- Borehamwood, United Kingdom
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 10 Projects Listed
AI & Custom Software Development Company —We deliver end-to-end software solutions for global clients across 5 continents, with expertise in AI, custom software and web & mobile applications...
Top Services:
- AI Development
- Software Development
- Mobile App Development
- Software Testing
- Big Data Analytics
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- Location
- Zagreb, Croatia
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
We build AI-accelerated software products faster, smarter, and built to scale. From LLM integrations to full-stack delivery, our teams ship real value. Together with you.Were Valletta.Software a software development company where human engineers and AI work side by side to build faster, smarter...
Top Services:
- AI Development
- Mobile App Development
- Software Development
- Staff Augmentation
- Web Design
- Show more
- Location
- Cospicua, Malta
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $44/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 8 Projects Listed
Algosoup is a London-based software development company that provides AI-native, forward-deployed engineering services by embedding software engineers into client teams. It supports startups, scaleups, enterprises, and agencies with rapid MVP development, product engineering, AI integration, legacy...
Top Services:
- AI Development
- Software Development
- Mobile App Development
- Software Testing
- eCommerce Development
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- Location
- London, United Kingdom
- Number of Employees
- Under 49
- Average Hourly Rate
- $300/hr
- Minimal Budget
- $25,000 - $50,000
At RichestSoft, we don't just build apps; we create seamless digital experiences that automate businesses. As a leading Mobile App and Web Development Company, we partner with visionary companies to bring their ideas to life, blending their vision with our cutting-edge technical expertise to spark future...
Top Services:
- Mobile App Development
- Web Development
- Software Development
- Software Testing
- AI Development
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- Location
- Mohali, India
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 9 Projects Listed
Sunflower Lab is a Microsoft Solutions Partner delivering Power BI, Power Automate, Power Apps, Dynamics 365, SharePoint and Copilot, plus AI agents and AI automation. We are also an award-winning builder of custom web and mobile digital products...
Top Services:
- Mobile App Development
- Software Development
- Web Development
- Software Testing
- IoT
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- Location
- Hilliard, Ohio
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $99/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 7 Projects Listed
Founder-led IT staff augmentation for small-mid companies. We solve problems you haven't fully scoped yet...
Top Services:
- eCommerce Development
- Software Testing
- AI Development
- Mobile App Development
- Software Development
- Show more
- Location
- Berlin, Germany
- Number of Employees
- Under 49
- Average Hourly Rate
- $49/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 2 Projects Listed
Kevuru Games is a game development outsourcing company founded in 2011. We provide full-cycle game development, co-development, AAA game art outsourcing, and console porting services. Our teams work with Unreal Engine and Unity for game developers and publishers worldwide...
Top Services:
- Mobile App Development
- VR/AR
- Software Development
- Product Design
- Video Production
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- Location
- Kyiv, Ukraine
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 9 Projects Listed
Lexogrine is a premier AI agent development company and web and mobile software company specializing in AI development, React, React Native, and Node.js development...
Top Services:
- Software Development
- AI Development
- Mobile App Development
- Cybersecurity
- eCommerce Development
- Show more
- Location
- Krakow, Poland
- Number of Employees
- Under 49
- Average Hourly Rate
- $49/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
Holdapp is a mobile and web app development company from Wroclaw, Poland. We bring together the worlds of business, software developers, and users to create products that let our clients grow. Since 2012, we've been helping companies worldwide to thrive in the digital realm...
Top Services:
- Web Development
- Mobile App Development
- Product Design
- UI/UX Design
- Software Testing
- Show more
- Location
- Wroclaw, Poland
- Number of Employees
- Under 49
- Average Hourly Rate
- $60/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 8 Projects Listed
Rocket Systems builds custom software and AI-powered products around real business needs. We take time to understand each clients goals and choose the right technical approach, creating reliable and scalable solutions with a strong focus on quality and long-term value...
Top Services:
- Web Development
- Web Design
- IoT
- AI Development
- Mobile App Development
- Show more
- Location
- Sacramento, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 3 Projects Listed
El Pixel is a trusted IT solutions provider, offering custom software development and consulting services tailored to meet the unique needs of businesses.We actively apply AI technologies in development to accelerate delivery, enhance efficiency, and create smarter solutions...
Top Services:
- AI Development
- Mobile App Development
- Software Development
- Web Development
- UI/UX Design
- Show more
- Location
- Krakow, Poland
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $10,000 - $25,000
Greensighter is a full-cycle software development studio. We build custom software, AI agents, and MVPs...
Top Services:
- Mobile App Development
- Software Development
- AI Development
- Wearables
- IT Services
- Show more
- Location
- San Francisco, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 2 Projects Listed
Bellosoft is a global software development agency helping businesses scale through custom solutions in web, mobile, AI, and cloud technologies. With a focus on innovation, agility, and measurable results, we partner with startups and enterprises in the US, UK, and Europe to deliver reliable products and...
Top Services:
- Software Development
- UI/UX Design
- Web Development
- Mobile App Development
- eCommerce Development
- Show more
- Location
- Watford, United Kingdom
- Number of Employees
- Under 49
- Average Hourly Rate
- $65/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 16 Projects Listed
Solvebyte delivers IT Software Solutions & iGaming platforms worldwide. We specialize in Web & App Development, Casino, Sportsbook, Lottery, API, CRM & PAM systems. 50+ global brands trust us to build, launch & scale...
Top Services:
- Web Development
- Web Design
- AI Development
- Mobile App Development
- VR/AR
- Show more
- Location
- Indore, India
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
BlueSail AI builds custom software and automation for businesses running on spreadsheets, workarounds, and expensive tools that never fit. Web apps, internal systems, client portals, AI agents, and workflow automation - designed around how your operation actually works. Based in Jacksonville, FL, with a...
Top Services:
- Software Development
- AI Development
- Web Development
- Mobile App Development
- Web Design
- Show more
- Location
- St. Augustine, Florida
- Number of Employees
- Under 49
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 3 Projects Listed
Creatix Technologies is a software and blockchain development company, bringing the best engineering teams and talents in Armenia to startups, SMEs, as well as enterprises around the world...
Top Services:
- Web Design
- eCommerce Development
- Web Development
- Software Testing
- Blockchain
- Show more
- Location
- Yerevan, Armenia
- Number of Employees
- Under 49
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
Partnering with startups to enterprises, we craft innovative, reliable software solutions that drive success...
Top Services:
- Web Design
- UI/UX Design
- eCommerce Development
- WordPress Website Design
- Web Development
- Show more
- Location
- San Jose, Costa Rica
- Number of Employees
- Under 49
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $1,000 - $10,000
TO THE NEW is a digital technology services company providing innovative product engineering solutions to diverse industries across the globe. We design and build digital platforms with Cloud, Data, and AI as the main pillars...
Top Services:
- Web Development
- eCommerce Development
- UI/UX Design
- Software Testing
- Blockchain
- Show more
- Location
- Singapore, South Africa
- Number of Employees
- 1000 & Up
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
Ship with confidence. Digital Archer supports your dev process with embedded QA teams expert in test automation, regression testing, performance testing, and more. QA that feels in-house...
Top Services:
- Software Testing
- Staff Augmentation
- IT Services
- Cloud Consulting
- AI Development
- Show more
- Location
- Čantavir, Serbia
- Number of Employees
- Under 49
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 3 Projects Listed
We are a seasoned team of software experts developing on the cutting edge of metaverse, blockchain and software development...
Top Services:
- AI Development
- Blockchain
- Software Development
- Web Design
- Software Testing
- Show more
- Location
- Dubai, United Arab Emirates
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 3 Projects Listed
Crest Coder Private Limited is a client-first web and app development agency committed to turning ideas into high-performing digital products. From startups finding their footing to enterprises scaling their platforms, we build reliable, scalable, and intuitive solutions tailored to every stage of growth. Our...
Top Services:
- Digital Services
- Web Development
- eCommerce Development
- Mobile App Development
- Software Development
- Show more
- Location
- Ahmedabad, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $15/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 1 Project Listed
PWN-ALL is a Dubai-based cybersecurity and software development agency specializing in protecting and strengthening digital infrastructure for enterprises and government organizations. The firm delivers advanced services such as penetration testing, ransomware recovery, AI-driven security, and custom software...
Top Services:
- Software Development
- AI Development
- IT Services
- IT Compliance Solution
- Cybersecurity
- Show more
- Location
- Dubai, United Arab Emirates
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $185/hr
- Minimal Budget
- $1,000 - $10,000
CodeLynx is a UAE-based technology company helping businesses build scalable web apps, mobile apps, SaaS products, and AI-powered automation systems. We work with founders and growing companies to turn ideas into reliable, production-ready software that improves operations, reduces manual work, and creates...
Top Services:
- WordPress Website Design
- eCommerce Development
- Web Development
- Software Testing
- Software Development
- Show more
- Location
- Dubai, United Arab Emirates
- Number of Employees
- Under 49
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
AI-powered software development company delivering custom web, mobile, SaaS, and automation solutions. We build scalable, secure, and business-focused digital products that help startups and enterprises innovate, streamline operations, and grow with confidence...
Top Services:
- Mobile App Development
- Software Development
- AI Development
- Web Development
- Web Design
- Show more
- Location
- Dubai, United Arab Emirates
- Number of Employees
- Under 49
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
BitGoLabs is a blockchain development company based in India that delivers specialized Web3 and blockchain solutions to startups and enterprises worldwide. Its expertise spans smart contracts, DeFi protocols, RWA tokenization, crypto trading bots, Web3 applications, blockchain infrastructure, and security...
Top Services:
- Blockchain
- Software Development
- Mobile App Development
- AI Development
- VR/AR
- Show more
- Location
- New Delhi, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
Ubertesters is a crowdtesting company that allows organizations to outsource the power of the crowd for their own digital testing or QA needs by using remote global vetted testers with devices...
Top Services:
- Software Testing
- Location
- Ramsey, New Jersey
- Number of Employees
- Under 49
- Average Hourly Rate
- $15/hr
- Minimal Budget
- Under $1,000
At SmartNow we focuses on small companies and start-ups. To help them to have the right technologies & tools to grow their company as fast as possible...
Top Services:
- Web Development
- Mobile App Development
- Web Design
- Software Development
- WordPress Website Design
- Show more
- Location
- Budapest, Hungary
- Number of Employees
- Under 49
- Average Hourly Rate
- $22/hr
- Minimal Budget
- Under $1,000
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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