Top 100 Systems Integrator Companies in California

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. 

Managed Solution provides integrated IT services to small to midmarket clients across a variety of sectors. Founded in 2002 and headquartered in San Diego, CA, their team consists of approximately 20 employees. They work to solve business challenges, primarily by way of cloud consulting, SI, and IT product management.

Interlaced.io is a San Diego, California-based IT strategy consulting and IT managed services company. They focus on IT strategy consulting and IT managed services and were launched in 2009.

Pointivity Managed Solutions is an IT managed services agency in San Diego. Founded in 2001, they have about 17 employees that serve mostly midmarket and small-business clients in a wide range of sectors. Services include cloud consulting, IT consulting and SI, as well as IT strategy.

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.

UniWebb Software is a mobile and web development company based in Elk Grove, CA and was founded in 2011. UniWebb  has a small team of fewer than five employees that focuses on providing mobile app development, web development, and custom software development services, exclusively to small businesses.

Five9 is a cloud-based call center software provider. Their team of about 1,000 employees is based in San Ramon, Calif. Services include CRM, ERP, and IT consulting, as well as voice services. They were founded in 2001. 

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. 

SP Marketplace is a software development company based in Penn Valley, Calif., with another office in Sacramento, Calif. Founded in 2012, SP Marketplace specializes in providing custom software development, application development, and application management services to IT companies and nonprofits.

Established in 2009, Xterra Solutions, Inc. Is an IT managed services company. Their small team is headquartered in San Francisco, California and provides IT managed services, Cybersecurity, and cloud consulting & SI.

FLEX, a large product design company, is located in Singapore, Singapore and San Jose, California. Established in 1969, the team provides product design, other design, and logistics & supply chain consulting.

Life Elixir is a consultancy based in Newport Beach, Calif. with over two employees. Founded in 2015, they offer business consulting, big data consulting, and other design solutions for clients that work in the industries of health care, government, and IT services.

Digital marketing agency Digitopia was founded in 2004. With headquarters in Carlsbad, Calif., they have a team of 11. They specialize in digital strategy, content marketing, and conversion optimization. 

WEBITMD is a growth marketing and sales agency that delivers an engineered approach by combining marketing strategies with sales technology and automation. They were founded in 2008 in Los Angeles and have offices in New York City and Dallas. They specialize in digital strategy, inbound marketing, SEO, and paid media. 

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.

The Workforce Pro is a consulting firm based in Los Angeles run by a team of less than 10. Founded in 2016, the company specializes in business consulting, CRM consulting & SI, and other application development. Their business consulting services focus on cost reduction, strategy development, and operational changes, among other topics.

Reel Axis is a marketing agency based in Carlsbad, Calif., and founded in 2018 with more than 10 employees. They offer marketing strategy, social media marketing, and content marketing solutions for clients ranging from startups to large firms.

Calibec is a small custom software development firm. Founded in 2021, the team offers custom software development, web development, mobile app development, enterprise app modernization, and more. The agency is located in Mission Viejo, California.

AllCode is a digital agency based in San Francisco. Founded in 2015, they have approximately 15 employees who focus on Cloud Computing, Custom Software Development, and Web Development.

Cygnis Media is a development agency is headquartered in Pleasanton, Calif. Since 2010, their team of 45 has been specializing in web design and development, UX/UI design, mobile app development, and more. Cygnis Media works with clients in various industries including arts & entertainment and business services. 

SM Innovations is a cloud consulting and SI firm based in Santa Monica, Calif. Founded in 2018, their team of 30 serves clients in the IT services sector.  Services include web development and UI/UX design.

ExpertsFromIndia is a development company based in San Jose, Calif. They were founded in 2003 and have a team of around 800 employees. They primarily provide custom software development and SEO. 

Giant Partners, a direct marketing company, was founded in 2005. They are in Thousand Oaks, California and have a small team. Giant Partners provides direct marketing, search engine optimization, and conversion optimization.

Founded in 1999, Techmedics is an IT managed services company. Their small team is headquartered in Los Angeles, California; Ontario, California and Irvine, California and provides IT managed services, IT strategy consulting, and cybersecurity.

KME Systems is a small IT managed services company launched in 1993. Their services include IT managed services, IT strategy consulting, and cloud consulting & SI. The company is headquartered in Lake Forest, California.

VOLANSYS Technologies is a product realization and digital transformation company based in Ahmedabad, India, and founded in 2008. Their team of more than 350 employees specializes in IoT development, cloud consulting, and mobile app development. 

Cybersecurity company Portola Systems, Inc is headquartered in Santa Rosa, California. The small agency was established in 1994. Their team focuses on cybersecurity, IT managed services, IT strategy consulting, cloud consulting & SI, and more.

Datorium is a bespoke data solutions company based in Palo Alto, Calif. The company, founded in 2015, has a team of less than ten that provides BI & big data consulting & SI, digital strategy, and AI services to various companies and institutions. 

 Intuz Cloud is a cloud consulting company from San Francisco. It was founded in 2009 and now has a team of 70 that provides cloud consulting, system integration, and IT managed services to primarily mid-size companies in the IT and e-commerce industries.

HIPAA Vault is a cloud consulting company based in San Marcos, Calif. Founded in 1997, this thirteen-person team offers HIPAA-complianted web hosting and cloud solutions, along with systems integration, cloud consulting, cybersecurity, and managed IT services for the healthcare field.