Top 100 IT Services Companies in California
The Best of December 2025Looking for a top IT services company in California?
For your company to grow, it is essential to choose the best technology. Hiring an innovative IT services provider is the easiest way to ensure that you are making the best use of technology, increasing sales, and staying one step ahead of the competition.
To assist you in your search for a partner, we’ve compiled this list of the top IT consultants in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
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List of the Best California IT Companies
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$5,000+50 - 249 employeesGaithersburg, MDRead More
DesignDATA is an IT managed services company. Established in 1979, the midsize agency is headquartered in Gaithersburg, Maryland and Washington, District of Columbia. Their services include IT managed services, IT strategy consulting, cloud consulting & SI, and Cybersecurity.
Industries
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$1,000+50 - 249 employeesNaperville, ILRead More
BetterWorld Technology is a midsize IT managed services company launched in 2003. Their services include IT managed services, Cybersecurity, IT strategy consulting, and Compliance Consulting. The company is headquartered in Naperville, Illinois; Naperville, Illinois; Winter Park, Florida and Denver, Colorado.
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1051Undisclosed10,000+ employeesPasadena, CATetra Tech, a large IT strategy consulting company, is located in Pasadena, California. Their services include IT strategy consulting and BI & big data consulting & SI.Read More
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1052Undisclosed2 - 9 employeesSanta Rosa, CASonoma Tech Support, a small IT strategy consulting and IT managed services company, is located in Santa Rosa, California. Their services include IT strategy consulting and IT managed services.Read More
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1053Undisclosed2 - 9 employeesSanta Rosa, CATechnology Simplified is a small Santa Rosa, California-based IT strategy consulting and IT managed services company. The team focuses on IT strategy consulting and IT managed services.Read More
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1054Undisclosed50 - 249 employeesSanta Rosa, CAFounded in 2009, VisiQuate, Inc. Is an IT strategy consulting company. Their services include IT strategy consulting.Read More
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1055Undisclosed50 - 249 employeesSanta Rosa, CAKLH Consulting is an IT managed services company. Launched in 1980, the team offers IT managed services and IT strategy consulting. The agency is headquartered in Santa Rosa, California.Read More
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1056Undisclosed2 - 9 employeesSanta Rosa, CAIT managed services company Norcal Networks is located in Santa Rosa, California. Launched in 2003, the team provides IT managed services and Web Design.Read More
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1057Undisclosed10 - 49 employeesSanta Rosa, CASR Technologies, Inc., an IT managed services company, is headquartered in Santa Rosa, California. They specialize in IT managed services and cloud consulting & SI and were founded in 2014.Read More
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1058Undisclosed2 - 9 employeesSanta Rosa, CABased in Santa Rosa, California, Vista Broadband Networks is an IT managed services company. They provide IT managed services and were launched in 2000.Read More
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1059Undisclosed2 - 9 employeesValencia, CAPuzzle Piece Technologies is a small IT strategy consulting company headquartered in Valencia, California. The team provides IT strategy consulting and other IT consulting and SI.Read More
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1060Undisclosed10 - 49 employeesSan Marino, CALaunched in 2014, ZBrains is a small San Marino, California-based CRM consulting and SI company. Their services include CRM consulting and SI and ERP consulting and SI.Read More
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1061Undisclosed50 - 249 employeesSanta Clara, CALaunched in 2000, Rootshell Inc is a midsize Santa Clara, California-based CRM consulting and SI company. Their services include CRM consulting and SI and ERP consulting and SI.Read More
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1062Undisclosed10 - 49 employeesAliso Viejo, CAAccutive is a Cybersecurity company based in Aliso Viejo, California and Vancouver, Canada. The team provides Cybersecurity and IT managed services.Read More
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1063Undisclosed50 - 249 employeesSan Ramon, CASennovate is a Cybersecurity company. The San Ramon, California-based firm provides Cybersecurity and IT managed services.Read More
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1064Undisclosed2 - 9 employeesSan Ramon, CADazzpers is a Cybersecurity company. They were launched in 2020, and their services include Cybersecurity.Read More
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1065Undisclosed10 - 49 employeesLos Angeles, CAHeadquartered in Los Angeles, California, Iron Cove Solutions is a business intelligence company. The team focuses on BI & big data consulting & SI and cloud consulting & SI.Read More
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1066Undisclosed2 - 9 employeesNovato, CABlue Karma Security is a Cybersecurity company based in Novato, California. Their services include Cybersecurity.Read More
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1067Undisclosed10 - 49 employeesWestlake Village, CAMillennium Business Solutions Group (MBSG) is a Cybersecurity company. The company is in Westlake Village, California. Their services include Cybersecurity and cloud consulting & SI.Read More
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1068Undisclosed2 - 9 employeesIrvine, CATylerTech IT Solutions is a Cybersecurity and IT managed services company founded in 2014. Their services include Cybersecurity and IT managed services.Read More
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1069Undisclosed2 - 9 employeesFresno, CABreadcrumb Cybersecurity is a Cybersecurity and IT managed services company. The Fresno, California-based agency offers Cybersecurity and IT managed services.Read More
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1070Undisclosed2 - 9 employeesChula Vista, CASan Diego Tech Support is a Cybersecurity company. The team specializes in Cybersecurity and cloud consulting & SI and is headquartered in Chula Vista, California.Read More
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1071Undisclosed10 - 49 employeesRedwood City, CACertus Cybersecurity is a Cybersecurity company. Their small team is headquartered in Redwood City, California. Their services include Cybersecurity.Read More
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1072Undisclosed50 - 249 employeesHermosa Beach, CAFounded in 2016, REDESIGN is a Cybersecurity company. The team focuses on Cybersecurity and IT managed services.Read More
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1073Undisclosed50 - 249 employeesSan Francisco, CAMeter is an IT managed services and IT staff augmentation company launched in 2015. The company offers IT managed services and IT staff augmentation, and is midsize.Read More
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1074Undisclosed50 - 249 employeesSan Diego, CASoftClouds is a cloud consulting & SI company launched in 2005. Their team offers cloud consulting & SI and CRM consulting and SI.Read More
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1075Undisclosed50 - 249 employeesSan Diego, CACybersecurity and IT managed services company akaCRM, a division of SIG was launched in 2007. The company specializes in Cybersecurity and IT managed services.Read More
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1076Undisclosed10 - 49 employeesSan Francisco, CACadalys, Inc. Is a San Francisco, California-based CRM consulting and SI company. They focus on CRM consulting and SI.Read More
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1077Undisclosed10 - 49 employeesWalnut Creek, CAStarrData is a CRM consulting and SI company. Headquartered in Walnut Creek, California, their small team focuses on CRM consulting and SI. The agency was founded in 2009.Read More
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1078Undisclosed250 - 999 employeesSunnyvale, CAFounded in 2004, I.T. Solutions, Inc. Is a midsize IT strategy consulting company located in Sunnyvale, California and Roswell, Georgia. Their team provides IT strategy consulting.Read More
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1079Undisclosed10 - 49 employeesNewark, CAMorro Data is a small cloud consulting & SI company. Established in 2013, the team offers cloud consulting & SI.Read More
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1080Undisclosed50 - 249 employeesSan Jose, CASecqureOne is a Compliance Consulting company. The team is located in San Jose, California, and their services include Compliance Consulting and cloud consulting & SI.Read More
Industries
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Check out an IT Services Company in California with the most new reviews in the past 12 months.
Most Reviewed
IT Services Company
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