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.
Delivering Business Productivity In The Cloud
AwsQuality is a technology consulting company helping businesses design, build, and scale reliable digital solutions. We work across Salesforce, AI, Cloud, DevOps, Mobile, and Web delivering measurable outcomes through engineering quality, transparency, and long-term partnership...
Top Services:
- Web Design
- Web Development
- Mobile App Development
- AI Development
- Software Development
- Show more
- Location
- Ruston, Louisiana
- Number of Employees
- 50 - 99
- Minimal Budget
- Under $1,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAwsQuality Services
Data sourced from the agency's DesignRush profileCanon Lenovo Go Proto My Healthcare clinic Techmatrix LambdaTest AVINTA GR ellucian Nitro Cloud
Websites That Build Trust
Estopia is a founder-led website design and development studio based in Scotland, helping businesses create modern, trust-focused websites that clearly communicate their value and generate enquiries. The studio combines strategy, messaging, design, development, and ongoing support under one senior team to...
Top Services:
- Web Design
- Web Development
- UI/UX Design
- Mobile App Development
- Software Development
- Show more
- Location
- Cowdenbeath, United Kingdom
- Number of Employees
- Under 49
- Average Hourly Rate
- $85/hr
- Minimal Budget
- Under $1,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsEstopia Engineering Ltd. Services
Data sourced from the agency's DesignRush profileStonehorse Finance Abbeyview Day Centre Caledonian Ambulance Services
Real-device app and browser testing. Fixed price. Verified report in 3 days.
Your AI wrote the test cases. 99tests runs them on the real phones, laptops and browsers your users actually own - Redmi, Realme, Galaxy, iPhone, Chrome on Windows, Safari on Mac - through a crowd of 20,000 testers across India. Every finding is verified, graded against a published rubric and backed by a...
Top Services:
- Software Testing
- Location
- Bengaluru, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $20/hr
- Minimal Budget
- Under $1,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts99tests Services
Data sourced from the agency's DesignRush profileP&G Flipkart Infosys Wipro
Democratizzando la presenza online per aziende e professionisti
NFW Web Studio è uno studio web di San Giovanni Lupatoto (Verona) che realizza siti web, landing page e app per piccole e medie imprese in Italia e in Europa. Siti mobile-first, ottimizzati per le Core Web Vitals e conformi al GDPR...
Top Services:
- Web Design
- Web Development
- AEO
- CRO
- SEO
- Show more
- Location
- San Giovanni Lupatoto, Italy
- Number of Employees
- Under 49
- Average Hourly Rate
- $35/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 1 Project Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsNFW Web Studio Services
Data sourced from the agency's DesignRush profileBI-K Energy Ricerca Perdite 1972 Valeureux
NFW Web Studio Reviews & Testimonials
Arena Manutenzioni's Review Sourced from Google
We are a company operating in the Verona area in the water leak detection sector, and we relied on NFW Web Studio for our website. We started with a landing page describing the service, but given the strong competition, even in Verona and the surrounding province, we upgraded to a full website. We launched in May, and in June we received our first quote request through the website. By September, we had received more than a dozen requests. They were always clear and available, ready to answer all our questions and propose solutions. I recommend them to anyone, like us, who has a business and needs to find new clients!
Marco Margotti's Review Sourced from Google
Professional and punctual. They created our company website, making it faster and more visible to the public. A pleasure to work with.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsAI that runs the busywork for small businesses audits, automation, and content.
Most small businesses know AI could save them hours they just don't know where to start. BizSuite by J&B Enterprise fixes that. We run a $997 AI Audit that maps every repeatable task in your business and ranks what to automate first, then build and operate the systems: lead-gen, AI video clipping, and...
Top Services:
- AI Development
- Mobile App Development
- Software Development
- Software Testing
- IT Services
- Show more
- Location
- Austin, Texas
- Number of Employees
- Under 49
- Average Hourly Rate
- $149/hr
- Minimal Budget
- Under $1,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsBizsuite by J&B Enterprise LLC Services
Data sourced from the agency's DesignRush profileMnemopay Gridstamp Voxcore
Where Your Idea Become Reality
Adeona Technologies is a software engineering company specializing in custom software development, AI-powered business automation, cloud applications, CRM solutions, and enterprise integrations. We partner with startups and established businesses to design and build scalable, secure, and tailored digital...
Top Services:
- Software Development
- Mobile App Development
- Staff Augmentation
- Managed Services
- HR Outsourcing
- Show more
- Location
- Colombo, Sri Lanka
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- Under $1,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsADEONA TECHNOLOGIES (PRIVATE) LIMITED Services
Data sourced from the agency's DesignRush profileDialog Axiata PLC ADA Jaykay Marketing Services (Keells) National Insurance Trust Fund SLT-Mobitel
ADEONA TECHNOLOGIES (PRIVATE) LIMITED Reviews & Testimonials
hanzar k's Review Sourced from Google
Adeona Technologies is a highly reliable partner with strong expertise in solution design and custom software development. Their clear understanding of business requirements and responsive support make them a trusted choice for critical projects.
nim K food's Review Sourced from Google
Excellent service.. this was just what we needed for IT solutions provider. Thank you Adeona Technologies.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsBuilding 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
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsLN Solutions Services
Data sourced from the agency's DesignRush profileModus Tech PatentOAResponse Shah Trading Company Mark Distributor Gokul Wholesale SP Inventory Huntley Crossing Luxury Apartments Patel Jewelers Luv2Smoke Armanetti's Wine and Spirit Huntley
LN Solutions Reviews & Testimonials
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
Software Testing Specializations
Services Related to Software Testing
Popular Services
Why companies trust DesignRush
Every agency is independently vetted before it can be listed or ranked
Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.
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.Â
Core services include:Â
- Functional testing Â
- Performance testing Â
- Security testing Â
- Usability testing Â
- Regression testing Â
- Automation testing Â
- Accessibility testing  Â
- Mobile app testing Â
- API testing Â
- Compatibility testing across devices/browsers Â
- Compliance testing Â
- Testing with artificial intelligence (AI) tools
- QA auditÂ
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. Â
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. Â
Special software testing services such as QA audit goes from $5,000 to $25,000.Â
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:Â Â
- Core functionality issues: Use functional testing to verify features work as expectedÂ
- Unstable code or new features: Use unit testing for individual components and integration testing for modules working togetherÂ
- Poor system stability after updates: Seek regression testing to make sure new changes didn't break existing featuresÂ
- Performance and load issues: Use performance and load testing to evaluate speed and scalabilityÂ
- Security issues: Security and penetration testing are commonly used across apps handling sensitive user dataÂ
- Hard-to-navigate user experience (UX): Pursue usability testing to determine how intuitive the application is for end usersÂ
- Low compatibility across devices: Compatibility testing can evaluate how good the app works on different browsers, devices, and OS versionsÂ
There is also the option to choose between manual and automated testing. Â
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. Â
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.Â
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. Â
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.Â
How do businesses measure the effectiveness of software testing?
The effectiveness of the software testing is measured via:Â
- Code coverage: The percentage of the code that has been testedÂ
- Defect density: The number of defects found per unit of codeÂ
- Test case effectiveness: The percentage of test cases that identify defects; helps prune redundant and ineffective testsÂ
- Time to detect and fix defects: The time it takes to identify and fix software defects and software bugsÂ
- Defect leakage: The number of bugs that "escaped" to production versus those caught during the testing phase Â






