Top 100 Software Testing Companies in the United States
The Best of December 2025Looking for a top software QA company in the United States?
Hiring a software testing company is a necessity to both test and improve the services your company offers, especially in an increasingly digital world.
To assist you in your search for a partner, we’ve compiled this list of the top software testing companies in United States. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United States Software QA Companies
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$5,000+50 - 249 employeesCluj-Napoca, RomaniaRead More
BetterQA is an Application Testing company. Their midsize team is located in Cluj-Napoca, Romania. Their services include Application Testing, other IT consulting and SI, and Application Management & Support. The company was launched in 2018.
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$5,000+50 - 249 employeesSeattle, WARead More
QA Wolf, an application testing company, was launched in 2019. The company provides application testing and has a small team.
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61$5,000+50 - 249 employeesTampa, FLTAFF Inc is a midsize cloud consulting & SI company. Launched in 2000, the team specializes in cloud consulting & SI, Custom Software Development, Web Development, Mobile App Development, and more. The company is in Tampa, Florida and Bengaluru, India.Read More
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62$10,000+250 - 999 employeesEdison, NJRead More
XDuce, a business intelligence company and cloud consulting & SI company, is based in Edison, New Jersey. The small company was founded in 2006. Their services include BI & big data consulting & SI and cloud consulting & SI.
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IEEEIndustries
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63$10,000+10 - 49 employeesDover, DECODECAVE, an user experience design company, is headquartered in Dover, Delaware. The small company was established in 2019. Their services include ux/ui design, cloud consulting & SI, mobile app development, AR/VR development, and more.Read More
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Specifi Health Light 24x.press DirexxtIndustries
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64$25,000+50 - 249 employeesNorcross, GAThis Dot is a software development company. The midsize Norcross, Georgia-based agency was established in 2016. Their team offers custom software development, web development, enterprise app modernization, e-commerce development, and more.Read More
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65$50,000+50 - 249 employeesJupiter, FLDevessence is a software development company headquartered in Jupiter, Florida. The midsize firm was established in 2023. Their team provides custom software development, cloud consulting & SI, web development, and application testing.Read More
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66$1,000+2 - 9 employeesSouth Bend, INAcolyte Applications, a software development company, was founded in 2018. Their small team is headquartered in South Bend, Indiana. Their services include custom software development, application management & support, ux/ui design, mobile app development, and more.Read More
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67$10,000+2 - 9 employeesDenver, CORead More
Forbina Consulting, LLC is a custom software development company launched in 2020. Their small team is based in Castle Rock, Colorado. Their services include custom software development, cloud consulting & SI, and other application development.
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Foundation for the Accreditation of Cellular TherapyIndustries
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68Undisclosed2 - 9 employeesBethel, CTRead More
Agency Labs is a web and software development company located in Bethel, Conn. Founded in 2010, the team of 11 provides web development, mobile app development, testing services, and more.
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69$5,000+10 - 49 employeesRoswell, GARead More
5th Method Consulting is a consulting firm with offices in Atlanta and Pittsburgh. Founded in 2006, 5th Method specializes in ECM consulting and SI, cloud consulting, UC consulting, application testing and SEO. The team takes a collaborative approach to working with clients and helps them eclipse their competitors by improving operational efficiency, visibility, and decision making. With about 35 employees, 5th Method is a versatile firm that's developed solutions for companies of all shapes and sizes.
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70$5,000+250 - 999 employeesSan Francisco, CACobalt is a San Francisco, California-based Cybersecurity and Application Testing company. Launched in 2013, the team offers Cybersecurity and Application Testing.Read More
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71$5,000+50 - 249 employeesElmont, NYRead More
Zimble Code is a small Elmont, New York-based mobile application development firm. Founded in 2018, the team provides mobile app development, web development, e-commerce development, and application testing.
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72$50,000+10 - 49 employeesLake Forest, CALaminar Consulting Services Inc. Is a small software development company. The Lake Forest, California-based company was founded in 2005. Their services include Custom Software Development, Application Testing, Enterprise App Modernization, cloud consulting & SI, and more.Read More
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ExemplisIndustries
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73$10,000+1,000 - 9,999 employeesChicago, ILQUINNOX is an Application Testing company. The large Chicago, Illinois-based team offers Application Testing and cloud consulting & SI. The agency was launched in 2002.Read More
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74$1,000+10 - 49 employeesCouncil Bluffs, IACybersecurity company American PCS was established in 2010. Headquartered in Council Bluffs, Iowa, their small team provides Cybersecurity, IT managed services, Application Testing, and Compliance Consulting.Read More
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75$10,000+2 - 9 employeesBurbank, CARead More
Worklab.io, Inc. is a software agency founded in 2011 with no more than 10 members. They offer custom software, web, and mobile app development solutions from their office in Burbank, Calif. They work with small and mid-market firms in the field of business services.
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All State AssociationIndustries
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76$1,000+10 - 49 employeesSan Bernardino, CARead More
WordSphere WordPress Development Agency is a software development firm established in 2007. Their small team is headquartered in San Bernardino, California. The company focuses on custom software development, IT managed services, web design, wearable app development, and more.
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77$10,000+50 - 249 employeesFremont, CARead More
Agile Soft Systems, Inc, a custom software development firm, was launched in 2012. Their midsize team is headquartered in Fremont, California. Their services include custom software development, application testing, blockchain, enterprise app modernization, and more.
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78$1,000+50 - 249 employeesIndependence, MOWeb design company Avigma Tech LLC was launched in 2010. Their midsize team is located in Independence, Missouri. Avigma Tech LLC provides web design, ux/ui design, cloud consulting & SI, AR/VR development, and more.Read More
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79Undisclosed250 - 999 employeesMonrovia, CAParasoft is an Application Testing company. The Monrovia, California-based company specializes in Application Testing.Read More
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80Undisclosed250 - 999 employeesSan Francisco, CALambdaTest is an Application Testing company. In San Francisco, California and Noida, India, the company provides Application Testing and Generative AI.Read More
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81$10,000+10 - 49 employeesPhiladelphia, PARead More
Engine Room is a development company based in Philadelphia. They have a team of around 30 employees and were founded in 2014. They mainly provide web, mobile app, and e-commerce development services to enterprise and midmarket businesses.
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CertainTeed -
82$1,000+10 - 49 employeesLaguna Beach, CARead More
Position1.com is a small digital marketing firm headquartered in Laguna Beach, Calif. Founded in 2017, their main focus lines are PPC, SEO, and web design.
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DesignerHardware.comIndustries
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83$1,000+2 - 9 employeesSan Diego, CARead More
Opel Labs is an application testing company. In San Diego, California, their small team specializes in application testing, IoT development, Artificial Intelligence, and custom software development. The agency was launched in 2020.
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84$1,000+50 - 249 employeesMiramar, FLDevco is a Medellín, Colombia-based IT staff augmentation company. Their services include IT staff augmentation and IT strategy consulting.Read More
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85$1,000+50 - 249 employeesDublin, CAPCloudy, an Application Testing company, is in Dublin, California. Established in 2015, the team offers Application Testing.Read More
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86$5,000+2 - 9 employeesColumbus, OHRead More
Compile Columbus is a software company based in Columbus, Ohio, and founded in 2018. With no more than 10 employees, they provide custom software, web, and mobile app development solutions to small businesses.
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Blue Radar SearchIndustries
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87$25,000+50 - 249 employeesRoswell, GABuild Technology Group is a custom software development company based in Woodstock, Georgia. The agency specializes in custom software development, IT strategy consulting, BI & big data consulting & SI, IT managed services, and more and has a midsize team.The agency was established in 2009.Read More
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88$10,000+50 - 249 employeesGaithersburg, MDContio.tech is an UX design agency. Launched in 2016, the agency is based in. The small team offers ux/ui design, BI & big data consulting & SI, web development, application testing, and more.Read More
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89Undisclosed250 - 999 employeesTurtle Creek, PAAtlas Software, an Application Testing company, provide Application Testing and IT staff augmentation. They were established in 1995.Read More
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90$1,000+50 - 249 employeesTorrance, CAQA Genesis is an Application Testing company established in 2014. Their services include Application Testing.Read More
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