Top 100 Software Development Companies in the United States

Zagaran, Inc. is a Harvard-alumni led software development company headquartered in Boston, MA that offers web development, custom software, and mobile apps. Their team has provided software development for clientele ranging from Global 500 companies to universities to government agencies, working primarily with Python, Django, and React/Angular.

Northwest Independent Ruby Development is a digital agency based in Seattle. Since 2011, the small team of four has specialized in providing web and custom software development. 

Infuse is a software development company based in San Francisco. The company, founded in 2014, has a team of around 20 that provides custom software development, mobile app development, and UX/UI design services. Infuse serves enterprise and smaller-sized companies in various industries that include financial services, medical, and IT. 

Sparkbox is a web design and development company based in Dayton, Ohio, with a satellite office in Pittsburgh. Founded in 2009, Sparkbox's team of 38 employees provides web design and development, e-commerce development, custom software development, and UX/UI design services for mainly midmarket businesses.

HQ is an UX company. They are in Ogden, Utah and have a small team. Their team focuses on ux/ui design, branding, mobile app development, web design, and more.

D3V Technology Solutions is a cloud-based solutions provider based in Plano, Texas with fewer than 10 members. Since their founding in 2011, they have provided big data consulting, cloud consulting, and enterprise app modernization solutions for clients ranging from startups to enterprises.

BLUEPORTAL, LLC is an IT company founded in 2015 and run by more than 10 people. Based in New York, they offer custom software, web, and mobile app development solutions, primarily to small and mid-market clients in the fields of financial services, health care, and e-commerce.

SandBox Union is a software development firm. They are located in East Rochester, New York and Alpharetta, Georgia and have a small team. Their services include custom software development, ux/ui design, mobile app development, web development, and more.

Lean Discovery Group, an UX design agency and product design company, was established in 2021. Located in Norfolk, Virginia, their small team specializes in ux/ui design and product design.

The Apptitude is a midsize mobile app development firm. The Houston, Texas-based agency was established in 2016. Their team offers mobile app development, custom software development, e-commerce development, IT strategy consulting, and more.

ISL (iStrategyLabs) is a WPP company based in Washington, DC with 39 employees. The company was founded in 2007, and provides a wide range of services, from digital strategy and web design to UX/UI design. They work with multiple industries such as financial services, media, and information technology.

Masscom Corporation is a cloud consulting & SI company. The midsize Dover, Delaware-based team provides cloud consulting & SI, CRM consulting and SI, ERP consulting and SI, IT managed services, and more. The agency was established in 2015.

Centizen, Inc. Is a custom software development firm. Their midsize team is located in Beaverton, Oregon and Tirunelveli, India. The agency specializes in custom software development, BI & big data consulting & SI, cloud consulting & SI, e-commerce development, and more.

SteadyRain is a St. Louis-based digital strategy and marketing agency. They have 20 employees, and serve both as a strategic consultancy and perform hands-on marketing and development. SteadyRain offers custom software and web development, SEO, PPC campaigns, and other solutions to create the right campaign. Many of its clients are midmarket companies, though some are also small businesses.Former Clients: Build-a-Bear Workshop, Dent Wizard, Great Rivers Greenway, First Bank, the Missouri Division of Tourism

Luminate Denver is a small web design agency established in 2022. Their team provides web design, web development, search engine optimization, branding, and more. The company is in Centennial, Colorado.

Prestige Development Group is an IT staff augmentation company based in Sacramento, California. The small firm was launched in 2016. Their team specializes in IT staff augmentation, custom software development, mobile app development, and blockchain.

Ethervision is a Chicago-based mobile app boutique. A handful of their projects were App Store originals back in 2008, and they have developed 180+ apps since. The company has 4 employees, and they focus on mobile app development, UX/UI design, and wearable app development.

Usability Sciences is a market research company. The Irving, Texas-based agency was founded in 1989. The small team specializes in market research, ux/ui design, product design, custom software development, and more.

Rocksauce Studios is a mobile app development firm based in Austin, Texas. Founded in 2010, their team of over 10 serves clients in the consumer products, banking, and food industries. Services include discovery, strategy, branding, and back-and front development.

Onsharp is a web development company. The small Fargo, North Dakota-based company was launched in 2000. Their services include web development, mobile app development, and content marketing.

Level 12 is a custom software solutions agency in Jeffersonville, Ind. Founded in 2009, they have about 10 employees that serve midmarket and enterprise clients in the financial and IT sectors. Services include custom software development, IT strategy consulting, and web development.

Callibrity, a custom software development firm, is headquartered in Cincinnati, Ohio. They offer custom software development and were founded in 2007.

IT Vibes is an internet marketing agency based just outside Houston in The Woodlands, TX. The agency was founded in 2008, and now employs a team of 18 that does web design, web development, custom software development, SEO, PPC, and social media marketing. 

Outcome Engine, a , is in Albuquerque, New Mexico. The firm offers and has a small team.The firm was launched in 2023.

ACL IT is a Miami, Florida-based IT staff augmentation company. The agency focuses on IT staff augmentation, custom software development, IT strategy consulting, BI & big data consulting & SI, and more and is midsize.The agency was launched in 1991.

Founded in 2018, Imua software development and UX design firm based in San Francisco, Calif. They have a small team of fewer than 10 employees. They also provide branding and product design services. 

Deyo Group, Inc. Is a software development firm. They are headquartered in Wylie, Texas and have a small team. Their services include custom software development, web development, mobile app development, e-commerce development, and more.

Caffeine Interactive Technologies is a small mobile application development company. Based in Dripping Springs, Texas and , , the agency was founded in 2013. Their services include mobile app development, web development, digital strategy, and web design.

Pixel Jar is a development agency based in Tustin, Calif. They were founded in 2004 and employ a team of 4. The company specializes in web and e-commerce development, web and UX/UI design, branding, and more.

UpTech Works is a mobile application development company. Their small team is located in Millbrae, California. The firm offers mobile app development, custom software development, and web development. The firm was founded in 2016.