Searching for a reliable software testing company in the United States to ensure the quality of your applications? We’ve reviewed the leading companies from Seattle to New York based on their case studies and client feedback. Explore this curated list, filtering by budget, services, or team size, to find the perfect software testing partner for your project.
Best United States Software Testing Agency Rankings
426 Companies
Rankings updated: July 10, 2025
Top US Mobile & Web App Development AgencyAppMakersUSA is a US-based full-service mobile application development company. We specialize in building cross-platform websites and apps (meaning iOS & Android for the price of one), informing your [... view the full profile of AppMakers USA]Woodland, California Under 49 Inquire $10,000 - $25,000
Quality, Experience, Transparency, ResultsMercury Development offers best in class Software Development, Mobile Apps, UI/UX, QA, ML, Data Science and more. With over 23 years in business, and over 400 employees, Mercury has the experience [... view the full profile of Mercury Development]Stuart, Florida 250 - 499 $50/hr Inquire
Where Quality Meets Excellence in Software TestingTestMatick delivers quality in software testing across a wide range of industries from finance to entertainment. With our skilled quality assurance team, we can begin testing projects of any [... view the full profile of Testmatick]New York City, New York 100 - 249 $14/hr $1,000 - $10,000
Build Intelligent Apps for Web, Mobile, Data, AI and CloudAzumo helps businesses build intelligent apps by providing nearshore, top-tier developers skilled in AI, data engineering, and enterprise web and mobile applications. Our expertise has earned the [... view the full profile of Azumo]San Francisco, California 100 - 249 $55/hr $50,000 & Up
Best AI-powered solutions for custom healthcare software developmentСomprehensive AI-powered healthcare software solutions tailored for business needs of healthcare providers. Full-cycle development, custom apps, and medical IT consulting. Our AI-driven services [... view the full profile of IT Medical]Miami, Florida Under 49 Inquire Inquire
Transforming Ideas into Intelligent SolutionsAristek is a custom development company specializing in AI and DS solutions for EdTech, HealthTech, Logistics, and Retail. Our experts have 22+ years of experience, serving 40+ global clients and [... view the full profile of Aristek Systems]Irvine, California 100 - 249 $50/hr $25,000 - $50,000
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Software Development for NASDAQ & NYSE Listed Companies and Fast-growing StartupsProduct Engineering Partner for NASDAQ & NYSE Listed Companies and Fast-growing Startups in the USA.Build your app 30% faster at 40% Less CostISO 9001:2015 & ISO/IEC 27001:2022 Certified: We [... view the full profile of ATeam Soft Solutions]New York City, New York 250 - 499 $20/hr $10,000 - $25,000
Building Custom Software, web and mobile solutionsOutsmart the competition with best-in-class Custom Software development, web & mobile app development & digital marketing services. Build digital products that let people do things differently. [... view the full profile of TechAvidus]Chicago, Illinois 100 - 249 $18/hr $1,000 - $10,000
B2B eCommerce & Custom Development Agency for Complex Projects in Manufacturing and DistributionCodup is a B2B eCommerce and custom software development agency helping manufacturers, distributors, and retailers scale with tailored digital solutions. From platform integrations to self-service [... view the full profile of Codup]Houston, Texas 100 - 249 $25/hr $1,000 - $10,000
Building Future-Ready Mobile ExperiencesAppsChopper is a mobile app development company delivering custom iOS, Android, and cross-platform apps. With 13+ years of experience and 400+ projects, we build scalable, feature-rich apps for [... view the full profile of AppsChopper]New York City, New York 100 - 249 $55/hr Inquire
Lets Connect & CollaborateUnico Connect: Building Future-Ready Digital Experiences with NoCode, Traditional & AI Technologies [... view the full profile of Unico Connect]Chicago, Illinois 50 - 99 $40/hr Inquire
Elevating your place on the digital landscapeEvrone is your go-to custom software development company that offers a comprehensive range of services - from web development to mobile app development, design to Java development, Python Django [... view the full profile of Evrone]San Francisco, California 50 - 99 $50/hr $10,000 - $25,000
AI Driven Digital AgencyAddWeb Solution is a Greenville, South Carolina - based AI-driven digital agency delivering innovative digital solutions worldwide. [... view the full profile of AddWebSolution]Greenville, South Carolina 100 - 249 $25/hr $1,000 - $10,000
Revolutionizing Mobile Solutions with AI-Powered Innovation for Your BusinessAt Mobcoder, we help our clients realize the potential of rapidly evolving mobile technologies, from developing an app strategy to launching mobile applications. We have the expertise to take the app [... view the full profile of Mobcoder]Seattle, Washington 100 - 249 $55/hr $10,000 - $25,000
TRIARE unlocks IT potential of YOUR businessTRIARE provides comprehensive services encompassing the entire software development lifecycle of WEB and MOBILE applications, along with UI/UX Design, Prototyping, Business Analysis, and software [... view the full profile of TRIARE]Fairfax, Virginia 50 - 99 $45/hr Inquire
High Voltage Code Since 2010ELEK+RIK is an app development and digital revenue powerhouse founded during the app boom era. Our forte is helping solopreneurs speed to market with software engineered for revenue. [... view the full profile of ELEK+RIK]New York City, New York Under 49 $55/hr Inquire
Your helping hand in software qualitya1qa, a global pure-play QA and test automation provider, brings over 20 years of expertise in delivering quality assurance and software testing services. The organization adjusts its workflows to [... view the full profile of A1qa]Decatur, Georgia 1000 & Up $25/hr $10,000 - $25,000
Your Trusted Partner in Software Development, Product Design and QAinVerita is a 150 engineers custom software and staff augmentation company that delivers custom healthcare software, pharmacy and medical(IoT), web(.NET/Node.js), mobile solutions(React-Native), and [... view the full profile of InVerita]San Francisco, California 100 - 249 Inquire Inquire
Software Testing Agency - Helping Businesses Attain Impeccable Software Quality Since 2015We help businesses gain confidence in their products on a demo day, spot critical bugs before they travel to prod, and speed up software releases in a secure way. Our QA team is skilled in manual [... view the full profile of QAwerk]New York City, New York Under 49 $40/hr $10,000 - $25,000
Infograins Software Solutions, Innovate, Automate, DominateInfograins Software Solutions Pvt. Ltd., established in 2013 by Ajay and Vipin Shukla, delivers innovative IT services, including blockchain solutions, mobile app development, custom software [... view the full profile of Infograins]Chicago, Illinois 100 - 249 $25/hr $1,000 - $10,000
Materializing Software Project Concepts!Intetics, established in 1995, is a prominent player in the IT software services domain. They offer a range of services, including Custom Software Development, Educational Software Development, Remote [... view the full profile of Intetics]Naples, Florida 500 - 999 $50/hr $50,000 & Up
E-commerce Experts | Web Development, Shopify/ Shopify PlusDigitalSuits is a full-cycle ecommerce agency with a focus on Shopify development and extensive expertise in custom software development. [... view the full profile of DigitalSuits]Miami, Florida 50 - 99 $45/hr $10,000 - $25,000
Software Outsourcing & Development | 500+ Active ClientsFounded in 2009 by Nacho de Marco and Paul Azorín, BairesDev provides top 1% tech talent to a range of clients, from startups to Fortune 500 companies. [... view the full profile of BairesDev]San Francisco, California 1000 & Up $50/hr $50,000 & Up
Mobile and software app development executed with perfection!TVISHA is a dynamic technology company that envisions and crafts innovative digital solutions. With an unwavering commitment to excellence, we stand as a trusted partner on the forefront of [... view the full profile of Tvisha Technologies]Edison, New Jersey 100 - 249 $10/hr Inquire
Lets build some tech together!Guiding and helping businesses worldwide build solutions that sell. Genetech is an award-winning custom software development company with almost 2 decades of experience in delivering top-notch tech [... view the full profile of Genetech Solutions]Ann Arbor, Michigan 100 - 249 $50/hr $10,000 - $25,000
FinTech Apps DevelopmentItexus is a custom software development company focused on Finance apps development for startups, midsize companies and established enterprises. 10+ years in global IT industry § 130+ in-house [... view the full profile of Itexus]Dover, Delaware 100 - 249 $40/hr $25,000 - $50,000
Powering Digital Transformation with Custom Mobile SolutionsSolution Analysts is a leading digital transformation and enterprise software development company, specializing in custom solutions that drive innovation. [... view the full profile of Solution Analysts]Suwanee, Georgia 100 - 249 $25/hr $50,000 & Up
Feel like you're working with your own team.As a web development company specializing in building high-load complex products, we are passionate about sharing our expertise and keeping you updated on the latest advancements in these key areas. [... view the full profile of Singula]San Francisco, California 100 - 249 $35/hr $10,000 - $25,000
Award-Winning E-Commerce Development CompanyElogic Commerce is a full-service e-commerce development agency with over a decade of experience in building, designing, and optimizing online stores. Our team of 160+ certified developers serves [... view the full profile of Elogic Commerce]New York City, New York 100 - 249 Inquire $25,000 - $50,000
We don't just test. We make your products successful.QA Mentor is a multi-award-winning global software testing and quality assurance company headquartered in New York, with a team of 400+ QA experts. CMMI Level 3 appraised, ISO 27001, 9001, and 20000 [... view the full profile of QA Mentor]New York City, New York 250 - 499 $20/hr $1,000 - $10,000
We build AI-native solutions and use AI to build software better, faster, smarter.Your AI and Data transformation partner.We help you unlock AIs value through the power of your data. [... view the full profile of HatchWorks AI]Atlanta, Georgia 100 - 249 $50/hr $10,000 - $25,000
Transformation that makes Business senseCopper Digital is a leading digital transformation services company united by a singular purpose: to empower businesses in manufacturing, healthcare, and fintech industries to transcend traditional [... view the full profile of Copper Digital]Dallas, Texas 100 - 249 $100/hr $50,000 & Up
Redefining real estate tech!RisingMax Inc., a prominent IT consulting company based in NYC, collaborates with startups and Fortune 500 companies, offering advanced IT solutions, chatbot solution, and smart strategies to [... view the full profile of RisingMax]New York City, New York 50 - 99 $25/hr $1,000 - $10,000
We Build. You Trust.Kodevent is a US-based software company providing top AI developers and custom solutions built with GPT-4, Claude, Gemini, and LLaMA. We deliver intelligent software to help you launch, grow, and [... view the full profile of Kodevent]Sheridan, Wyoming 50 - 99 Inquire $10,000 - $25,000
Exoft is a software house with a significant background in web and mobile development.Exoft is a HIPAA, software development and performance testing company that provides solutions to various business needs. [... view the full profile of Exoft]St. Louis, Missouri 50 - 99 $40/hr $10,000 - $25,000
Engineering peace of mindAt Vention, unparalleled customer care isnt just a promise its our mission. We blend personalized experience, unwavering attention to detail, and a genuine passion for your business, ensuring that [... view the full profile of Vention]New York City, New York 1000 & Up $50/hr $25,000 - $50,000
Techforce Global: Your Catalyst for Seamless SolutionsTechforce Global: Your partner for government custom software development, React Native development and more. Offering comprehensive services across industries with a global presence and a focus on [... view the full profile of Techforce Global]Naperville, Illinois 100 - 249 $26/hr $25,000 - $50,000
Since 2002 in the software development business. Companies from 27 industries choose us.With over 20 years of industry experience, Gecko Dynamics is a trusted partner for startups and enterprises. Our team delivers end-to-end solutions using Java, Angular, Flutter, and AWS. From ideation [... view the full profile of Gecko Dynamics]San Francisco, California 50 - 99 $50/hr Inquire
Your links to the world of I.T | Custom Software Development and Mobile App Development ExpertsLinkitsoft is a leading provider of custom software solutions and mobile app development services. With a team of highly skilled professionals, we specialize in crafting innovative and cutting-edge [... view the full profile of LinkitSoft]Austin, Texas Under 49 $35/hr Inquire
At Rootstrap we combine creativity, technical expertise, and process-driven developmentAt Rootstrap, we help companies scale people, processes, and products through outcome-driven development.We’ve helped launch more than 750+ digital products with more than 100 million combined [... view the full profile of Rootstrap]Los Angeles, California 50 - 99 $87/hr Inquire
Ruby on Rails Development CompanyRubyroid Labs is a full-cycle software development company specializing in Ruby on Rails solutions. Since 2013, weve delivered custom software to startups and enterprises worldwide, helping transform [... view the full profile of Rubyroid Labs]Springfield, Illinois 50 - 99 $35/hr $10,000 - $25,000
Empowering businesses with cutting-edge software products that drive growth and success.UplineSoft is a premier global IT outsourcing service provider, offering a comprehensive range of technology solutions tailored to meet the unique needs of businesses worldwide. Our expertise and [... view the full profile of UplineSoft Inc.]Monroe, North Carolina 100 - 249 $25/hr $1,000 - $10,000
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About The Author and Expert Reviewer
Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her diverse background in marketing, publishing, and museum curation has enhanced her writing and research abilities. This unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.
Sergio Oliveira is a seasoned software engineer and tech leader with deep expertise in C#, .NET, SQL, Azure, and scalable systems architecture. Holding a BSc in Computer Science and Finance, he pairs technical precision with strategic vision, shaped by years of hands-on professional experience in organizations across Europe and the US. At DesignRush, he oversees the full development lifecycle, from roadmap planning and features prioritization to UX refinement and platform optimization. His work ensures that technical execution aligns seamlessly with the company's goals, growth, and continuous innovation.
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