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.
Azumo
VerifiedVerified by the DesignRush team for authenticity and credibility.Build Intelligent Apps for Web, Mobile, Data, AI and Cloud
Azumo helps businesses build intelligent apps by providing top-tier developers skilled in AI, data engineering and enterprise web & mobile applications. Our expertise has earned the trust of industry leaders like Facebook, Twitter, Discovery, Zynga, and NCSoft...
Top Services:
- AI Development
- Software Development
- Staff Augmentation
- Mobile App Development
- Big Data Analytics
- Show more
- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $55/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 9 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAzumo Services
Data sourced from the agency's DesignRush profileDiscovery Channel Meta Zynga Jostens Assembled Brands NGL NCSoft Twitter Horoscope.com Bento
Azumo Reviews & Testimonials
Software Development Review from Michael S.
We selected Azumo to develop our software. We transitioned from another development company, so Azumo was initially responsible for migrating our existing code and environments. We are currently still working with Azumo as our nearshore software development team on adding new items to our software.
UI/UX Design Review from Anonymous
Azumo helped us migrate our existing UIs into a new framework, creating reusable components and the infrastructure needed for future development. The developer they assigned became a seamless part of our team, always punctual, responsive, and a great fit overall.
Software Development Review from Anonymous
Thanks to Azumo’s work, our product is now more scalable, optimized, and ready for a growing user base. Their team has managed the engagement effectively, keeping us updated and addressing any challenges along the way. We’ve appreciated their constant availability and proactive communication.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsMission-Critical Software Engineering & AI Development Firm
Mission-critical software engineering firm in Cincinnati, OH. Founded by an active firefighter and paramedic from the NYC 911 system. We build custom software, mobile apps, and AI platforms for organizations where system failure is not an option...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- WordPress Website Design
- eCommerce Development
- Show more
- Location
- Cincinnati, Ohio
- Number of Employees
- Under 49
- Portfolios Count
- 3 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCodebludev Services
Data sourced from the agency's DesignRush profileMendel Rosenblum FCNJ Life Town Beit Chabad South Beach Biago Custom Hamilton County Police Association Charitable Foun Village Of Golf Manor
Codebludev Reviews & Testimonials
Software Development Review from Andrew Rogerson
Codeblu Dev delivers high-quality work in a time-efficient manner. Not only does the team possess good communication skills, but they also exercise initiative when issues arise. They are a knowledgeable partner who is committed to building long-term working relationships.
Software Development Review from Martin Macmillan
Codebludev was able to take our vision and help us deliver an app that empowers retail shareholders to make their voices heard. Theyve brought a depth and breadth of technical expertise and user experience design to challenge us on our assumptions on how people would want to interact with the app. From a mobile development perspective, we wanted to go to market with both an Android and an iPhone simultaneously.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsRevolutionize Your Business Online Presence With Us.
We are an Affordable Digital Marketing Agency in Shawnee with budget-friendly solutions to amplify your brand. RevoluteX Digital: Your digital success catalyst! Specializing in Google marketing, website development, and social media magic, we craft online experiences that captivate and strategies that...
Top Services:
- Digital Services
- Web Design
- WordPress Website Design
- Digital Marketing
- SEO
- Show more
- Location
- Shawnee, Kansas
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 1 Project Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsRevoluteX Digital Services
Data sourced from the agency's DesignRush profileGriswold Rubbish Removal Oak Ridge Builders Southern Gutter Solutions GHI Improvements Piranha Construction Tint Shop Virginia LLC Mey-er Handy LLC Neomodern Construction Remodeling HeroMaid (5 Profiles) Select Express Mobile Detail
RevoluteX Digital Reviews & Testimonials
SEO Review from Laurence E. Del Priore
Working with Revolute X Digital has truly made a difference for our painting business. From the beginning, their team really understood what we needed, especially when it came to local SEO. Since partnering with them, weve noticed a real boost in traffic and more people reaching out for our services. They've been easy to work with clear communication, on time with everything, and the results have been great. Id definitely recommend Revolute X Digital to any small business that wants to grow online.
Digital Services Review from Fredrick Will
Working with RevoluteX Digital on local SEO optimization was a game-changer for my business. Their team took the time to understand my goals and created a clear strategy that helped boost my visibility in local search results. I saw noticeable improvements in Google rankings, increased traffic, and more customer inquiries within just a few weeks. They were transparent, responsive, and truly knowledgeable in the SEO space. I highly recommend RevoluteX Digital to any business looking to strengthen their local online presence.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsYour Partner For Smart Digital Solutions
We provide end-to-end digital solutions - from custom software and next generation web & mobile applications to AI, machine learning, and blockchain technologies. Our team combines technical expertise with real-world business insight to deliver secure, scalable, and efficient products...
Top Services:
- Software Development
- Mobile App Development
- AI Development
- Blockchain
- IT Services
- Show more
- Location
- Košice, Slovakia
- Number of Employees
- Under 49
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsORKA Systems Services
Data sourced from the agency's DesignRush profileCyber Ventures Switzerland Kim Dotcom (and ex MEGA projects) Electronic Association of Czech Republic BoBa Studio Prague Office House Prague Visibility Media Group
ORKA Systems Reviews & Testimonials
Web3 Development Review from Marián Čuprík
ORKA Systems did a great job for us. They delivered our website just as we wanted, and everything worked smoothly from start to finish. The team was easy to reach. Every time we had a question, they answered quickly and explained things clearly. We didnt waste time waiting for updates or chasing responses.Their technical work is solid. We asked for some custom solutions for our web3 development, and they handled even the tricky parts without any fuss. And they dont try to talk over your head with jargon. They keep things simple. The project cost was fair, with no hidden fees or surprise charges.We paid attention to the timeline, and ORKA delivered on schedule. The only delay we experienced was minor and well-communicated beforehand. I liked how the whole process was transparent. We always knew what was happening next.What stands out most is how willing they are to listen. If something was unclear, they fixed it fast. Our questions and suggestions were never ignored. Thats why I trust their team.In the end, our website looks good and runs reliably. It reflects what we wanted for our legal services business. If someone asked me to recommend a web development partner, I would mention ORKA without hesitation. No hype or big promisesjust honest work and good results.
IT Services Review from Jozef Semančík
Guys at ORKA systems helped my custom-bike building business not only by creating a very unique website for my company, but we are also using their own application (www.yeapp.app) for managing my business. Great cooperation - everything went perfectly!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsDedicated development team
Mobilunity is a global provider of IT staff augmentation, dedicated development teams, technical recruitment, and part-time IT consultancy. With over 15 years of experience, the company helps businesses access skilled IT professionals worldwide through flexible offshore and nearshore hiring models...
Top Services:
- Staff Augmentation
- IT Services
- HR Outsourcing
- Software Development
- Mobile App Development
- Show more
- Location
- Kyiv, Ukraine
- Number of Employees
- 250 - 499
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsMobilunity Services
Data sourced from the agency's DesignRush profileZenChef 42matters Republic Bank Limited Byg-e XPLG OWC Camptocamp ClipMyHorse.TV CHIP IN Cloudy Knights
Mobilunity Reviews & Testimonials
Dhaivat Dave's Review Sourced from Google
We’ve been working with Mobilunity since 2018 and have had an exceptional experience. We hired three frontend developers — Dmitriy, Serhii, and Marharyta — and they’ve been with us ever since. They’re among the best frontend engineers we've worked with: highly skilled in JavaScript, React, and CSS, extremely hardworking, detail-oriented, and always eager to learn.Even during very challenging times in Ukraine, they remained 100% reliable, committed, and always available. Not once have we faced delays or communication issues — a true testament to their professionalism.The support from the broader Mobilunity team has also been outstanding. Their local setup makes remote collaboration smooth, and they’ve gone above and beyond to ensure our team has everything they need to succeed. Highly recommended for anyone looking for top-tier remote talent and a reliable development partner!
Anna Lekhman's Review Sourced from Google
Good location, there are active recreation areas and the main thing is that the work is not in an open space
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsCustom Business Software
ProcessIT build Bespoke or Custom Software to match your unique business processes, just for you. You know your Business, we know Software. Tell us what you need & we'll build & adapt your logic into a full computer program so you can accurately manage, track and control your business.Save substantial...
Top Services:
- Software Development
- Business Consulting
- Web Design
- Mobile App Development
- Cloud Consulting
- Show more
- Location
- Hastings, New Zealand
- Number of Employees
- Under 49
- Minimal Budget
- Under $1,000
- Portfolios Count
- 2 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsProcessIT-Custom Software Services
Data sourced from the agency's DesignRush profileWilton Joubert Limited Account Collections Alexander Construction Hill Nurseries Limited Patton Engineering Lindisfarne Collage Auckland Independantly Qualified Persons Cedenco Foods New Zealand Ltd Rotorua Forest Holdings NZ Federation of Amateur Winemakers & Brewers
Simplifying life through innovation
At Linnify, we help visionary companies accelerate their digital development efforts. From growing startups to tech-driven organizations, we support you in defining, designing, building, and successfully launching on time through dedicated product teams...
Top Services:
- Software Development
- Web Development
- AI Development
- Mobile App Development
- Staff Augmentation
- Show more
- Location
- Cluj-Napoca, Romania
- Number of Employees
- Under 49
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsLinnify Services
Data sourced from the agency's DesignRush profileReadability drd Joyscore Stailer NEWtritionIQ Medefine
Linnify Reviews & Testimonials
GABRIEL SINCRAIAN's Review Sourced from Google
I worked with a few freelancers before and only had headaches. Since I discovered Linnify, everything has been going smoothly. They are professional, deliver exactly what they promise, and the app works flawlessly. Everyone is happy. I recommend!
Camil Moldoveanu's Review Sourced from Google
Linnify has been a reliable partner in our software development journey, providing excellent quality and innovative solutions. This is why we built this collaboration based on expertise trust. Their development team is knowledgeable and attentive, enhancing our user experience significantly. We recommend Linnify to anyone looking for one of the best product development companies in Cluj.
Paul Oarga's Review Sourced from Google
Great solutions, incredible team and enviable work ethic. Highly recommend them for any tech product, branding or idea you want to boost into reality.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsBest Custom App & AI Development Agency in UK
At Evangelist Apps, we go beyond app development, offering IT consultancy and comprehensive digital solutions that are customized to your business goals. Our goal is to deliver effective, customized strategies that fuel growth and align with industry standards...
Top Services:
- Mobile App Development
- UI/UX Design
- IT Services
- Staff Augmentation
- DevOps Consulting
- Show more
- Location
- Fleet, United Kingdom
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $49/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsEvangelist Apps Services
Data sourced from the agency's DesignRush profileUnion Bank of Switzerland British Airways Hastens Ltd. BBC British Gas
Evangelist Apps Reviews & Testimonials
Khushboo Gangarde's Review Sourced from Google
I’m currently working with Evangelist App, and it’s been an amazing experience so far. The environment here is super supportive and creative — I’ve learned so much in a short time. Every day brings a new challenge, and I can genuinely see myself growing, both professionally and personally. The team is great to work with, always open to ideas and feedback. Grateful to be part of such a positive and growth-driven space!
Tamanna Malik's Review Sourced from Google
Working with Evangelist Apps was a smooth and rewarding experience. The team communicated clearly throughout the project and brought great ideas to the table. They turned my vision into a functional, user-friendly app that exceeded my expectations. If you're looking for a team that delivers on time with top-notch quality, I’d definitely recommend them.
LIPIKA ROY's Review Sourced from Google
I had a great experience with Evangelist Apps ! They were professional, knowledgeable & delivered exactly what I wanted. The app they made for me is fantastic and easy to use. I highly recommended them to anyone looking for mobile app development.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTurn Your Idea Into a Market-Ready Product
NFN Labs is a design and development studio transforming ideas into market-ready products. With 14+ years, we specialize in UX/UI, web, and mobile app development, helping founders and businesses launch successful, user-centric solutions across diverse platforms, including AI and wearables...
Top Services:
- Web Development
- UI/UX Design
- Mobile App Development
- Web Design
- Design Services
- Show more
- Location
- Chennai, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsNFN Labs Services
Data sourced from the agency's DesignRush profileHappysales AI SaaS22 SpendFlo Orocorp Avalara Qube Studios Breadcrumb Bounce Krea Sportwalk
NFN Labs Reviews & Testimonials
Abinaya Muthuselvi's Review Sourced from Google
Developing Awsome app and learn new things😎😍.It's a place to explore your idea and skills.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWe Ignite Your Vision
The Joseph Company is a trusted technology partner providing custom web development & IT services to businesses across St. Louis and Southern Illinois. Headquartered in Arnold, Missouri, we serve clients throughout the region with a commitment to excellence, responsiveness, and long-term partnership...
Top Services:
- Software Development
- eCommerce Development
- Business Consulting
- Web Design
- Web Development
- Show more
- Location
- Arnold, Missouri
- Number of Employees
- Under 49
- Average Hourly Rate
- $120/hr
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsThe Joseph Company Services
Data sourced from the agency's DesignRush profilePlacard Wizard Charity Clothing Pickup Prestige Trucking, Inc. Wilmington Clinic Checkered Cottage Nuway Inc. Intellus Automotive Systems Southwest Oral Surgery Ingenium Partners Castle Design
The Joseph Company Reviews & Testimonials
Stella Oberkrom's Review Sourced from Google
I have worked with Sam, Jan, and the Joseph Company team for over 14 years and I could not be happier with their services!
Richard Rice's Review Sourced from Google
Our company provides software as a service to some of the largest transportation companies nationwide. For over 16 years TJCO has been our trusted go to software developer. TJCO support and response times go over and above expectations. We appreciate their professional approach and look forward to working with them again on our next development project.
Julio Mino's Review Sourced from Google
I ordered the DNC scrub they never delivered. I am still waiting for my refund. Ordered on a Saturday got an email stating " our offices are closed we will reopen bla bla bla" After a few days of hassle they decided to refund however so far the money did not show up in my credit card. I don't recommend doing business with this company.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsInnovate, Build, Elevate.
Welcome to Rasonix - Your Partner in Web Development and Design Solutions At Rasonix, we believe in the power of exceptional web experiences. As a leading web development company, we are dedicated to delivering innovative and tailored solutions to meet your digital needs...
Top Services:
- SEO
- Mobile App Development
- Web Development
- UI/UX Design
- Software Testing
- Show more
- Location
- Bengaluru, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 8 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsRasonix Services
Data sourced from the agency's DesignRush profileMyTyles Devstringx Technologies Pvt Ltd LensHub Stylo Boutique
Technology Connects
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
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsBellosoft Limited Services
Data sourced from the agency's DesignRush profileModern Tribe Greyhound Racing Ireland Unrvld Levo Moran's Catering Novo Digital Sentel Mortgage Propeller Etain FBA
Securing Systems. Eliminating Threats.
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
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPWN-ALL Services
Data sourced from the agency's DesignRush profileDP Bezpeka SDS-Trading FOP O.K NDA Privacy
PWN-ALL Reviews & Testimonials
Jovan Drobnjak's Review Sourced from Google
Our company improved its internal security processes with their help. Their tools run without errors, their audits are detalied, and their team always provides professional advice when needed. Excellent long-term partner.
Cvetko Djuretic's Review Sourced from Google
We’ve worked with this company for more than three years, and their support has been invaluable. Their software runs without any interruptions, their audits are thorough and insightful, and their training programs are interactive and informative. They successfully prevented a data breach and improved our internal processes. Their communication is professional, their team always responsive, and their services consistently reliable. A true long-term partner for our business.
Tijana Vuksanovic's Review Sourced from Google
We decided to cooperate with this company after facing several security issues, and it was the right choice. Their custom software solutions are reliable and easy to use, their audits are detailed, and their training sessions improved our employees’ awareness. They successfully stopped a potential ransomware attack and now monitor our systems proactively. Their communication is excellent, and their professionalism unmatched. A trustworthy long-term partner.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTransform Your Ideas Into Profitable IT Solutions
ITWEBS provides full-cycle software development, web and mobile application development, eCommerce platforms, DevOps, integrations, IT support, and dedicated development teams for businesses that need reliable digital solutions...
Top Services:
- eCommerce Development
- Web Development
- Software Testing
- Staff Augmentation
- Mobile App Development
- Show more
- Location
- Warsaw, Poland
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsITWEBS Services
Data sourced from the agency's DesignRush profileeCommerce Industry Education Industry Retail Industry
Trusted Software Partner For Modern Businesses
At Xofthub Inc., we believe great software is built on great architecture. We design scalable, maintainable systems with clear development patterns, ensuring your business can grow, adapt, and add new features whenever needed...
Top Services:
- UI/UX Design
- Mobile App Development
- eCommerce Development
- Software Testing
- Web Design
- Show more
- Location
- New Hyde Park, New York
- Number of Employees
- Under 49
- Average Hourly Rate
- $12/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 3 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsXofthub Inc Services
Data sourced from the agency's DesignRush profileAmericare Vertex Gulshanads
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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