Top 100 Application Modernization Companies in the United States

Headspring is a full-service custom software engineering and consultancy headquartered in Austin, Texas. Founded in 2001, they design technology solutions to solve complex problems for partners across the country and have delivered over 800 projects. Headspring's services include custom software development, web development, mobile app development, cloud consulting, and enterprise app modernization.

Located in Portland, Ore., AltSource Software is a technology consultancy and development house with a team of over 150. Since 2004, they've specialized in custom software development as well as enterprise app modernization, working primarily with midmarket businesses and enterprises.

Alligatortek is a software company headquartered in Chicago with an office in Oakbrook Terrace, Ill. Since 1993, their team of 59 has lent its services in custom software development, mobile app development, and cloud consulting & SI. They specialize in Azure, and have experience in working with frameworks such as .NET, AngularJS, and React Native.

Shift3 Technologies is a software-development-as-a-service firm based out of Fresno, Calif. Founded in 2013, the team of 65+ specializes in custom software, web, and mobile app development as well as enterprise system modernization and integration to help its small to mid-market clients achieve their goals. 

Epicenter Consulting is a web and mobile development company based in New York, with an additional location in Houston. Founded in 2008, this company has 15 employees. Services provided by Epicenter Consulting include custom software development, enterprise app modernization, and UI/UX design for businesses of all sizes.

Optimum is a digital marketing firm based in Houston. Since 2014, the small team of 3+ has specialized in web development, IT consulting, e-commerce development, email marketing, and mobile app development.

BlueFletch is a mobile development agency based in Atlanta founded in 2008. Their team of 38 experts specializes in mobile app development, custom software development, and enterprise app modernization for midmarket and large firms. They have experience working in the industries of retail, transportation, and consumer products & services, among others.

This Orlando, Fla. app development agency was founded in 2008. Echo Interaction Group has about 10 team members who specialize in various technological practices such as enterprise app modernization, wearables development, hardware integration, marketing, and UX/UI design. 

One Team US LLC is a custom software development, e-commerce development, and enterprise app modernization provider. They were founded in 2010, and are based in Troy, Mich. They primarily work with mid-market businesses in a variety of industries. 

Fulcrum Dynamic is a small IT strategy consulting company located in Round Rock, Texas. The team provides IT strategy consulting, custom software development, web development, and mobile app development.

Freelock LLC is a Seattle-based internet and web design firm that was founded in 2002. Freelock LLC's team of 5 employees works mainly with small- and mid-market sized clients but has experience working with large corporations as well. The firm specializes in web and UI/UX design along with e-commerce development. 

Ksense Technologies LLC is a small website development company. The Murray, Utah-based agency was launched in 2017. Their services include web development and mobile app development.

Founded in 2005, Invemo is a tech company headquartered in Santa Monica with another location in IST, Turkey. Their team of 4 provide mobile app development, UX/UI design, IT strategy, and app modernization services to clients.

Company A is a custom application development company based in Irvine, Calif., with offices in Plano, Texas, and Novi Sad, Serbia. The company, founded in 2015, has a team of more than ten that provides cloud consulting & SI, custom software development, web development, mobile app development, and enterprise app modernization services. Company A serves small and larger-sized companies in various industries, including IT, financial services, and health care & medical.

Stride is a New York City-based software development company that embraces agile development practices. Founded in 2014, Stride has proven itself as product development experts, with experience with software, websites, e-commerce, mobile apps, and IoT.

New Leaders is a technical services firm of 29 employees, established in 2007. They are headquartered in Truckee, Calif., with a second office in Beijing, China. They offer custom software development, e-commerce development, and UX/UI design. They primarily serve clients in midmarket and small businesses in the healthcare, business, and consumer products industries.

QuarkWorks is a development agency located in San Francisco. Since 2011, their team of 15 has been specializing in mobile app development, web development, product design, and more for enterprise and midmarket-level clients. 

Since 2014 web and mobile app development agency LakeView Labs has served clients ranging from startups to Fortune 500 companies. The small team of fewer than 10 applies its skill in mobile app, software, web, and e-commerce development to help these clients build engaging digital products.

InnoviMobile is an app development agency located in New Jersey with additional offices in Toronto, Canada and New York, NY. The team of fewer than 50 employees has been developing apps for mid-market and enterprise businesses since 2007.

2am.tech, a software development firm, was launched in 2013. The midsize team focuses on custom software development, web development, mobile app development, e-commerce development, and more. The firm is based in Miami Gardens, Florida.

Octavian Technology Group, LLC is a big data consultancy firm that’s based in Milwaukee and founded in 2019. With a team of fewer than 10 people, they are experts in big data consulting, cloud consulting, and AI solutions for clients.

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.

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.

Enola Labs Software is a software company based in Austin, Texas. Founded in 2012, Enola Labs Software specializes in web development, mobile app development, and custom software development. Enola Labs Software's team of nearly 15 employees works primarily with midmarket businesses in the healthcare and manufacturing industries. 

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.

Founded in 2014, OpenForge is a development and design company. Located in Philadelphia, their team of 15+ specializes in mobile app development and UX/UI design for clients in the healthcare industry. 

Grata Software is a software consultancy and development firm headquartered in Orlando, Fla. that specializes in custom software development, mobile app development, IT strategy consulting, cloud consulting, and enterprise app modernization. Founded in 2012, the firm's team of 6 works with small businesses, enterprises, and middle-market companies across industries such as business services, healthcare and medical, hospitality and leisure, and real estate.

Wintellisys, Inc is an IT company from Memphis, Tennessee. Founded in 2007, they’re experienced in IT managed service, IT strategy consulting, and cloud consulting and SI. They have 7 employees.

Programmers Beyond IT is a software development firm. Their midsize team is in Chicago, Illinois. The firm focuses on custom software development, enterprise app modernization, BI & big data consulting & SI, web development, and more.

User experience agency Amberteq was founded in 2008. The company offers ux/ui design, custom software development, web development, mobile app development, and more and has a small team. The company is in Bellevue, Washington.