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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$10,000+50 - 249 employeesL'viv, UkraineRead More
Founded in 2019, Uinno is an artificial intelligence firm. The midsize team specializes in Artificial Intelligence, Custom Software Development, Low/No Code Development, UX/UI Design, and more. The company is based in L'viv, Ukraine; Tallinn, Estonia; Kingston upon Thames, England and Zaporizhzhia, Ukraine.
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$1,000+50 - 249 employeesNaperville, ILBetterWorld 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.Read More
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1171Undisclosed10 - 49 employeesSanta Clara, CASagacent Technologies is an IT strategy consulting company. The Santa Clara, California-based agency was established in 2000. Their team offers IT strategy consulting and cloud consulting & SI.Read More
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1172Undisclosed2 - 9 employeesBakersfield, CAIT Management Services is a Bakersfield, California-based IT managed services company. Established in 2015, the team focuses on IT managed services and Cybersecurity.Read More
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1173Undisclosed2 - 9 employeesLos Angeles, CAAvatar Computer Consulting Inc., an IT managed services company, was founded in 1998. The team provides IT managed services and IT strategy consulting and is located in Los Angeles, California.Read More
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1174Undisclosed2 - 9 employeesChino Hills, CAD1 Defend is a Cybersecurity company. They focus on Cybersecurity and IT strategy consulting and were established in 2000.Read More
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1175Undisclosed2 - 9 employeesBenicia, CACybersecurity company ManagedTEK was founded in 2009. The company focuses on Cybersecurity and IT strategy consulting, and is small.Read More
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1176Undisclosed2 - 9 employeesGoleta, CASynergy Computing, Inc., a Cybersecurity and IT managed services company, was launched in 1995. Located in Goleta, California, the team offers Cybersecurity and IT managed services.Read More
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1177Undisclosed2 - 9 employeesSan Jose, CAGuardNet, Inc., a small Cybersecurity and IT managed services company, is headquartered in San Jose, California. The team offers Cybersecurity and IT managed services.Read More
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1178Undisclosed10 - 49 employeesIrvine, CANext IT Solutions, a small Cybersecurity company, is in Irvine, California. The team provides Cybersecurity and IT managed services.Read More
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1179Undisclosed10 - 49 employeesLake Forest, CACyberTrust IT Solutions is an IT strategy consulting company. Based in Lake Forest, California, the firm specializes in IT strategy consulting and cloud consulting & SI.Read More
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1180Undisclosed10 - 49 employeesTorrance, CALogic Technology Consulting Group is an IT strategy consulting company. The Torrance, California-based firm was founded in 2016. Their services include IT strategy consulting and Cybersecurity.Read More
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1181Undisclosed10 - 49 employeesSan Francisco, CALaunched in 2024, SecPath, a small Cybersecurity company, is headquartered in San Francisco, California. Their services include Cybersecurity.Read More
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1182Undisclosed1,000 - 9,999 employeesDiamond Bar, CALiferay is an Application Testing company established in 2004. The large team focuses on Application Testing and API Development.Read More
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1183Undisclosed250 - 999 employeesIrvine, CALaunched in 2015, Arctiq is a midsize IT strategy consulting company. Their services include IT strategy consulting and unified communications consulting & SI.Read More
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1184Undisclosed50 - 249 employeesDublin, CAClovity, a cloud consulting & SI company, was founded in 2017. Headquartered in London, England and Dublin, California, the team focuses on cloud consulting & SI and ERP consulting and SI.Read More
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1185Undisclosed250 - 999 employeesDublin, CAAlcor Solutions, Inc., an IT strategy consulting company, was established in 2008. The midsize team offers IT strategy consulting and cloud consulting & SI.Read More
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1186Undisclosed50 - 249 employeesCupertino, CACodenatives, a CRM consulting and SI company, was launched in 2012. The midsize team offers CRM consulting and SI and Mobile App Development.Read More
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1187Undisclosed1,000 - 9,999 employeesSan Ramon, CAGrid Dynamics is an IT strategy consulting company established in 2006. In San Ramon, California and Tampa, Florida, the team offers IT strategy consulting and BI & big data consulting & SI.Read More
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1188Undisclosed250 - 999 employeesHayward, CAFull Circle Electronics is an IT managed services company. They offer IT managed services and Document Digitization & Management and were launched in 2001.Read More
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1189Undisclosed10 - 49 employeesSan Leandro, CAData Slayer is an IT managed services company launched in 2012. The team provides IT managed services.Read More
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1190Undisclosed2 - 9 employeesSanta Rosa, CAEWaste Sonoma is an IT managed services company. Established in 2018, the team offers IT managed services. The company is in Santa Rosa, California.Read More
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1191Undisclosed2 - 9 employeesLos Gatos, CABay Surplus Technology is an IT managed services company. The team offers IT managed services, and the firm is headquartered in Los Gatos, California.Read More
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1192Undisclosed2 - 9 employeesMurrieta, CADocument Security Solutions, an IT managed services company, was founded in 2007. They specializes in IT managed services.Read More
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1193Undisclosed2 - 9 employeesSan Jose, CAFounded in 1984, M-Cubed Global is an IT managed services company. Their services include IT managed services.Read More
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1194Undisclosed2 - 9 employeesIrwindale, CAVirogreen USA Inc. Is an IT managed services company. They focus on IT managed services and are headquartered in Irwindale, California.Read More
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1195Undisclosed2 - 9 employeesRancho Cucamonga, CAWe Buy Used IT Equipment is an IT managed services company. They focus on IT managed services and were established in 1965.Read More
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1196Undisclosed10 - 49 employeesGarden Grove, CAIT managed services company California Electronics was launched in 2008. The firm specializes in IT managed services.Read More
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1197Undisclosed10 - 49 employeesFremont, CAExcess Logic is an IT managed services company. The team is located in Fremont, California, and their services include IT managed services.Read More
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1198Undisclosed2 - 9 employeesSan Diego, CAAvritek, an IT managed services company, is based in San Diego, California. They focus on IT managed services.Read More
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1199Undisclosed10 - 49 employeesFremont, CAIn Fremont, California, Surplus Service is an IT managed services company. They offer IT managed services.Read More
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1200Undisclosed2 - 9 employeesSan Diego, CAIT managed services company Dream Electronic Recycling is located in San Diego, California. Established in 2020, the team provides IT managed services.Read More
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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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