Top 50 Software Development Companies in St. Louis

Founded in 2008, Five Pack Creative is a mobile development company based in Frisco, Texas. Their nationwide team of developers helps clients with mobile app development, UX/UI design, and application testing. Across 100s of successful projects, they have helped clients across the U.S. achieve breakthrough results by providing thoughtful and creative solutions. 

Engage Software is a web and mobile development company based in St. Louis, Missouri with a second office in Florida. Founded in 1999, Engage Software's team of around 20 employees serves primarily small and mid-market businesses. They specialize in web development, web design, and custom software development services.

Strategic design and development agency Enliven is based in St. Louis. Since 2012, their team of 20 has been specializing in product design, web development, UX/UI design, and more for mainly enterprise-level clients. They primarily serve clients in the business services, health care & medical and IT industries. 

Digital Radium is a high-end software development company founded in 2020 in St. Louis, Missouri. With about 3 employees on board, they offer web development, mobile app development, and e-commerce development to small and medium-sized businesses across several industries, the main ones being business services, manufacturing, and financial.

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

Webenology, Inc is a custom software development firm based in St. Louis. Founded in 2013, their team of  8 serves clients in the transportation and nonprofit sectors. Services include web development and mobile app development.

Insight Global, a HR agency, was established in 2001. Headquartered in Atlanta, Georgia; Birmingham, Alabama; Huntsville, Alabama and Phoenix, Arizona, their large team provides HR services.

Happen technologies is a custom software development company in Saint Charles, Missouri. The small company was launched in 2018. Their services include custom software development, IT staff augmentation, mobile app development, and ux/ui design.

PC40 Interactive is a St. Louis, Missouri-based e-commerce development company. The small team focuses on e-commerce development, web development, custom software development, mobile app development, and more and was established in 2006.

Founded in 2004, Altec Design is a web design and internet marketing agency located in St. Louis, Mo. The team of 10 provide clientele with web development, PPC, web design, custom software development, and SEO services.

Wattanak, Inc is a computer software company based in Cerritos, California that was founded in 2018. Their team of less than five employees provides web development, custom software development, and AI services. 

Tuva Interactive is a full-service internet development company from St. Louis. The company was founded in 1996 and currently has a team of 10 employees. Tuva Interactive provides custom software development, web development, and IT strategy consulting.

Automation & Control Concepts, a software development company, was founded in 1996. Their midsize team is based in St. Louis, Missouri. Their services include custom software development.

DEKAMCO is a St. Louis, Missouri-based custom software development firm. The small company was established in 2019. Their team provides custom software development, mobile app development, web design, web development, and more.

Data Dynamics, Inc. is an IT consulting company based in Ballwin, Mo. with more than two professionals. Since 2010, they have provided IT managed services, IT staff augmentation, and cloud consulting solutions for clients ranging from small firms to large businesses.

Frontline Managed Services is an IT strategy consulting company. The midsize team is in St. Louis, Missouri. Their services include IT strategy consulting, cybersecurity, IT managed services, custom software development, and more.

Ross Technologies is an IT services company that was founded in 1997. It employs about 69 people across two offices: its Baltimore headquarters and St. Louis location. Ross Technologies specializes in cybersecurity, custom software development, web development, and Big Data consulting and SI. Its clients are mostly government agencies.  

In Collinsville, Illinois, Swip Systems is a web development firm. They provide web development, custom software development, mobile app development, and ERP consulting and SI and were founded in 1995.

ATB Technologies, an IT managed services company, was founded in 2002. The small team focuses on IT managed services, ERP consulting and SI, IT strategy consulting, and custom software development. The firm is in Chesterfield, Missouri.

Unidev is a technology company based in Missouri and was founded in 1990. They have about 50 employees that are focused on providing software development, managed application services (MAS), cloud hosting, and custom solutions for a wide range of clients globally focusing on business services, consumer products & services, and financial services industries.

CSG is an IT strategy consulting company headquartered in Creve Coeur, Missouri. The small team provides IT strategy consulting, BI & big data consulting & SI, custom software development, and Artificial Intelligence. The company was established in 1989.

Aggio is an IT strategy consulting company. Launched in 2016, the team specializes in IT strategy consulting, BI & big data consulting & SI, cloud consulting & SI, and custom software development. Their small agency is in St. Louis, Missouri.

Polaris Solutions, LLC is a cloud consulting & SI company launched in 2008. The midsize team provides cloud consulting & SI, cybersecurity, IT managed services, other IT consulting and SI, and more. The agency is located in St. Louis, Missouri and Lombard, Illinois.

Integrity Web Consulting is a full-service web consulting firm based in St.Louis, Mo. Founded in 2000, Integrity Web Consulting's team of 155 employees specialize in web development, custom software development, and mobile app development. 

Software development firm Dino Consulting was founded in 2014. They are based in Swansea, Illinois and have a small team. Dino Consulting specializes in custom software development, enterprise app modernization, mobile app development, application testing, and more.

PRI Global is a Ballwin, Missouri-based software development firm. The midsize team offers custom software development, mobile app development, application management & support, and other application development. The agency was launched in 1997.

Global Enterprise Services, LLC is a software development company located in St. Louis, Missouri. Launched in 2018, the small team offers custom software development, cybersecurity, IT strategy consulting, IT staff augmentation, and more.

Established in 2018, Capnion is a cybersecurity company. They are located in St. Louis, Missouri and have a small team. The company specializes in cybersecurity, custom software development, Artificial Intelligence, and ai consulting.

Lelander, an UX design company, was founded in 2010. The firm focuses on ux/ui design, custom software development, mobile app development, e-commerce development, and more and has a small team. The firm is located in St. Louis, Missouri.

Object Computing, Inc. Is an AI company. Established in 1993, the midsize firm is based in St. Louis, Missouri. Their services include Artificial Intelligence, blockchain, IoT development, custom software development, and more.