Top 100 IT Services Companies in California

Guidance Software is a software development firm that has been in operation since 1997. They are headquartered in Pasadena, Calif. and they have additional offices in Slough, U.K., Courbevoie, France, Waukesha, Wis., Rosemont, Ill., Dulles, Va., and New York. They have over 800 employees and they specialize in cybersecurity, IT strategy consulting, and IT staff augmentation. Their clients generally work in consumer services, government, or healthcare.

Northstar Technologies is a cloud consulting & SI company launched in 1992. Their small team is in Los Angeles, California and offers cloud consulting & SI, IT managed services, IT strategy consulting, and unified communications consulting & SI.

Key Information Systems is an IT managed services company. Their midsize team is based in Agoura Hills, California. The agency provides IT managed services, cloud consulting & SI, IT strategy consulting, and BI & big data consulting & SI.

Based in Carlsbad, California; Singapore, Singapore; Barcelona, Spain and Atlanta, Georgia, Proficio is a cybersecurity company. The midsize team offers cybersecurity, IT managed services, and IT strategy consulting. The agency was established in 2010.

Founded in 2001, Security On-Demand is a cybersecurity company. The midsize San Diego, California-based team provides cybersecurity, IT managed services, IT strategy consulting, BI & big data consulting & SI, and more.

CounterTack, an IT managed services company, was founded in 2011. They are based in Waltham, Massachusetts; Santa Monica, California; Rancho Cordova, California and , Singapore and have a midsize team. Their services include IT managed services, cybersecurity, and IT strategy consulting.

IT managed services company Oasis Technology is located in Camarillo, California. The agency focuses on IT managed services, IT strategy consulting, and cloud consulting & SI and is midsize.The agency was launched in 1979.

IT managed services company Netswitch Technology Management Inc was founded in 2000. Their midsize team is based in South San Francisco, California. Netswitch Technology Management Inc offers IT managed services, IT strategy consulting, and cloud consulting & SI.

Zumasys is a midsize IT managed services company established in 2000. Their services include IT managed services, other IT consulting and SI, and cloud consulting & SI. The company is located in Irvine, California.

Centarus is a small IT managed services company based in San Francisco, California. The team specializes in IT managed services, other IT consulting and SI, and unified communications consulting & SI.

Blast Analytics & Marketing is a data analytics company established in 1999. Their midsize team is headquartered in Rocklin, California; Sacramento, and Harrisburg, and provides BI & big data consulting & SI, conversion optimization, search engine optimization, and pay per click.

IT managed services company 8KMiles is based in Pleasanton, California. The midsize team focuses on IT managed services, BI & big data consulting & SI, cloud consulting & SI, and other IT consulting and SI. The agency was founded in 2007.

Accent Computer Solutions Inc. Is an IT managed services company. Their midsize team is located in Rancho Cucamonga, California and focuses on IT managed services, other IT consulting and SI, and cloud consulting & SI. The agency was established in 1987.

Right Click, an IT managed services company, was founded in 1997. The small Santa Ana, California-based team offers IT managed services and cloud consulting & SI.

AllConnected is a small IT managed services company. Founded in 1998, the team focuses on IT managed services. The agency is headquartered in Simi Valley, California.

DynTek, a midsize IT strategy consulting company, is located in Newport Beach, California; New York City, and Albany, . The team specializes in IT strategy consulting, custom software development, BI & big data consulting & SI, cloud consulting & SI, and more.

ARRC Technology is an IT managed services company founded in 1992. Their small team is headquartered in Bakersfield, California and provides IT managed services, other IT consulting and SI, cloud consulting & SI, and cybersecurity.

3GC Group is a Los Angeles, California-based IT strategy consulting company. Launched in 2003, the midsize team specializes in IT strategy consulting, IT staff augmentation, cloud consulting & SI, and cybersecurity.

Blackstone Technology Group is a San Francisco, California-based IT staff augmentation company. The midsize agency was launched in 1998. Their team focuses on IT staff augmentation, IT strategy consulting, cloud consulting & SI, cybersecurity, and more.

Zen Cloud Technologies is a small CRM consulting and SI company. Based in San Francisco, California, the company was launched in 2015. Their team focuses on CRM consulting and SI.

Forte Systems, Inc, a cloud consulting & SI company, is in Walnut Creek, California. The small team provides cloud consulting & SI, cybersecurity, IT strategy consulting, and IT staff augmentation. The agency was launched in 1985.

Based in Fremont, California and Indore, India, Vertisystem is a human resources company. The midsize team provides HR services, BI & big data consulting & SI, CRM consulting and SI, IT strategy consulting, and more. The company was founded in 2007.

Xentaurs is an IT consulting firm located in Irvine, Calif. It was founded in 2016 and has 32 employees. Their services include cloud consulting and SI, business intelligence and big data consulting and SI, and AI.

InfoObjects Inc. Is a data analytics company. Their midsize team is in San Jose, California. Their services include BI & big data consulting & SI, Artificial Intelligence, cloud consulting & SI, and IoT development. The firm was launched in 2005.

CloudMinds Technology Inc. Is an artificial intelligence firm and cloud consulting & SI company. Their midsize team is based in Santa Clara, California and Beijing, China. The agency provides Artificial Intelligence and cloud consulting & SI. The agency was launched in 2015.

Business intelligence company Alvarez Technology Group is headquartered in Salinas, California. The small firm was launched in 2001. Their services include BI & big data consulting & SI, IT managed services, cloud consulting & SI, and IT strategy consulting.

Lanlogic, an IT managed services company, was launched in 1995. The small team focuses on IT managed services, cloud consulting & SI, and IT strategy consulting. The agency is located in Livermore, California.

NetEnrich, Inc. Is a midsize IT managed services company established in 2004. Their services include IT managed services, cloud consulting & SI, and cybersecurity. The firm is headquartered in San Jose, California.

Nevtec, an IT managed services company, was launched in 1996. The company offers IT managed services, IT strategy consulting, and cloud consulting & SI and has a small team. The company is located in San Jose, California.

Launched in 1982, Quest Media & Supplies, Inc. Is an IT managed services company. The company offers IT managed services, IT strategy consulting, and cloud consulting & SI and has a midsize team.