Top 100 Software Development Companies in California

VentureDevs is an IT agency founded in 2016. They are headquartered in West Hollywood, Calif., with a second location in Poznan, Poland. Their team of 73 specializes in mobile app, web, custom software development, and more for primarily midmarket clients. 

Metal Toad is an AWS consulting partner based in Beverly Hills, Calif., with offices in Portland, Ore. and Pasadena, Calif. The company, founded in 2003, has more than 25 employees who provide, among others, cloud consulting & SI, IT managed services, and custom software development services to the media & entertainment, manufacturing, and automotive industries.

Kromeon is a software development firm based in Encinitas, Calif. and was founded in 2015. Their team of 4 employees specializes in custom software development, CRM consulting, and eCommerce development.

Seamgen is a San Diego, Calif.-based development firm established in 2008. It has a team of about 50 that does mobile app development, web development, UI/UX design, and custom software development. 

SPARK6 is a creative agency founded in 2011 and based in Santa Monica, Calif. The seven-person team provides mobile app development, UX/UI design, search engine optimization, custom software development, and branding services.

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. 

Capitol Tech Solutions is a digital agency in Sacramento, Calif. and Houston. Founded in 2010, they have about 25 employees that serve mostly midmarket and small-business clients in the education, consumer product, and business sectors. Services include digital strategy, SEO, and web design.

DADEN LLC is a software agency founded in 2014 and based in Aliso Viejo, Calif. With more than 10 members, they provide custom software development, mobile app development, and enterprise app modernization for clients in the fields of IT, e-commerce, and others.

Martian Craft is a user experience design company established in 2010. The company provides ux/ui design, cloud consulting & SI, custom software development, web development, and more and has a midsize team.

Webloo is a digital strategy company launched in 2016. They are in Newport Beach, California and have a small team. The firm specializes in digital strategy, web design, ux/ui design, custom software development, and more.

I-Tul Design & Software, Inc. is a software design and development company that was started in 1999. The 11-person team operates out of Roseville, Calif. where they provide custom software development as well as web design and development services to small and mid-sized businesses.

DevBatch is an IT company founded in 2010. Located in Lahore, Pakistan, they have a team of 118 employees. Their services include mobile app development, custom software development, web development, and SEO. They primarily serve small business and midmarket clients. 

HyperTrends Global is a leading software and product development company based in San Diego. The team has less than 5 employees and was founded in 2006. HyperTrends Global supports startups and enterprise clients with web development, e-commerce development, and custom software development. Notable areas of programming expertise include APIs, mobile apps, enterprise software, web applications, and M2M/IoT Software.

Established in 2009, Y Media Labs is a 200+ digital strategy and technology agency that focuses on innovation. With headquarters in Redwood City, CA and offices in Atlanta, Indianapolis, and New York, the company splits its time between mobile app development, digital strategy, and UI/UX design.

TekHqs ( Tek HeadQuarters ) is a custom software development company founded in 2010 with more than 50 members. They provide custom software development, CRM consulting, and ERP consulting solutions from their office in Irvine, Calif. They work primarily with small firms.

GBMF Tech, a software development firm, was established in 2019. Their small team is headquartered in London, United Kingdom; Citrus Heights, California and Chișinău, Moldova. The firm provides custom software development, web development, mobile app development, and e-commerce development.

Achieve Internet is a software development company that's headquartered in San Diego; they have another office in Los Angeles. Founded in 2002, Achieve Internet does web development, enterprise content management, sales intelligence, enterprise app modernization, CRM consulting, and e-commerce development. Clients are mostly midmarket companies and in the healthcare and arts and entertainment sectors. They have about 41 employees. 

Founded in 1999, LION Interactive is a full-service digital agency based in Berkeley, Calif. They are a smaller agency with just under 20 employees. LION's practice focuses on user experience and interface (UI/UX) design, web design, and custom software and web app development. They also develop applications for all relevant mobile and e-commerce platforms.

SmallWorld is a technology consulting firm founded in 2016 and located in San Diego. With a  team of fewer than 10 employees, they offer custom software development, web development, business consulting, and mobile app development services.

CodeFutures is a small software development company. Based in Broomfield, Colorado and San Jose, California, the agency was launched in 2001. Their services include custom software development, cloud consulting & SI, IT staff augmentation, and other IT consulting and SI.

Interactivism is a digital product design and development company founded in 2013. Based in Pasadena, Calif., the team of 8 specializes in UX/UI design, custom software development, and AR/VR development. 

Eachbase is a digital agency that operates out of California. Their main services span branding, SEO, and web development.

Hounder is a digital design and development company based in Redlands, Calif. Founded in 2016, the team of 3 specializes in web development, web design, and custom software development. 

Custom software development company Singula team was founded in 2022. The small team specializes in custom software development, web development, CRM consulting and SI, ERP consulting and SI, and more. The firm is in San Francisco, California.

Based in San Diego, Calif., PINT, Inc. is a full-service development firm. Founded in 1994,  they have about 45 employees that specialize in web development, web design, custom software development, and UX/UI design. The firm mainly works with clients in the healthcare field.  

Moves the Needle is a Product Design company founded in 2014. The small Encinitas, California-based team provides Product Design, Custom Software Development, AI Consulting, Corporate Training & Coaching, and more.

YouTeam is a marketplace for hiring remote software development contractors. Founded in 2014, YouTeam is headquartered in London, with an additional office in Lviv, Ukraine. YouTeam's staff of around 20 specializes in web development, custom software development, and mobile app development, primarily for enterprise and midmarket clients in business services and education.

FullStack Labs is a software consultancy headquartered in Granite Bay, CA with satellite offices in Arlington, VA, and Barranquilla, Colombia. With over 40 employees at hand, FullStack provides web development, custom software development, and mobile app development services to enterprises and startups alike.

Yeti LLC is a software development and design company founded in 2010. They have 20 employees, all of whom work out of an office in San Francisco. Yeti's practice is extensive for a firm of its size; they offer custom software development, UI/UX design, mobile apps, and IoT development.

SADA Systems, with a team of 350+ employees, is a software consulting agency that was founded in 2000. SADA Systems is headquartered in Los Angeles, with an office in Washington. The agency helps a variety of clients with their cloud consulting and system integration, IT strategy consulting, and software development needs.