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.
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.
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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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121Undisclosed10 - 49 employeesMountain View, CARead More
Cybersecurity and IT managed services company Jump Start Technology was founded in 1997. Their small team is based in Mountain View, California. Jump Start Technology focuses on cybersecurity and IT managed services.
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122$5,000+2 - 9 employeesSan Jose, CARead More
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.
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123$5,000+10 - 49 employeesRancho Cucamonga, CARead More
Zeta Sky is an IT firm based in Rancho Cucamonga, Calif. with no more than 50 experts. Founded in 2015, they provide cybersecurity, IT managed services, and cloud consulting solutions for small and medium-sized companies alike.
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Gallant InsuranceIndustries
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124$10,000+10 - 49 employeesPleasanton, CARead More
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.
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MIT NFL Network Oreo SamsungIndustries
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125$5,000+10 - 49 employeesSan Francisco, CARead More
Intivix is a Cloud and IT solutions company headquartered in San Francisco with offices in Corvallis, Ore. and Oakland, Calif. The company was founded in 1996 and now has a team of 20 that provides IT managed services, cybersecurity, cloud consulting & SI, and IT strategy consulting.
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United WayIndustries
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126$5,000+10 - 49 employeesEl Dorado Hills, CARead More
Launched in 1999, 7th Dimension is a IT managed services company. They are located in El Dorado Hills, California and have a small team. The agency specializes in IT managed services, IT strategy consulting, cybersecurity, and other IT consulting and SI.
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127$5,000+10 - 49 employeesMountain View, CATuple Tech, a small IT managed services company, is located in Demarest, New Jersey and Mountain View, California. They provide IT managed services, Web Development, cloud consulting & SI, Cybersecurity, and more and were launched in 2017.Read More
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128$1,000+10 - 49 employeesGarden Grove, CARead More
Red Cup IT is an IT solutions company based in Garden Grove, Calif. The company, founded in 2009, has a team of more than ten that provides, among others, IT managed services, IT strategy consulting, and cloud consulting & SI services to small and medium businesses and organizations.
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American ZettlerIndustries
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129$5,000+10 - 49 employeesSan Diego, CARead More
Reweto is a. Established in 2019, the team specializes in. Their small company is.
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130$1,000+10 - 49 employeesSan Francisco, CABay Computing Group is a San Francisco, California-based IT strategy consulting company. The small team provides IT strategy consulting, cloud consulting & SI, Cybersecurity, and IT managed services and was founded in 1999.Read More
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131$1,000+2 - 9 employeesLos Altos, CARead More
Rely On IT is a managed IT firm based in Los Altos, Calif. Founded in 2005, their team of 8 serves clients in the real estate and education sectors. Services include cloud consulting and strategy.
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132$1,000+10 - 49 employeesSan Diego, CARead More
Kazmarek Technology Solutions is a IT managed services company. The small San Diego, California-based firm was established in 2000. Their services include IT managed services, cybersecurity, IT strategy consulting, cloud consulting & SI, and more.
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133$10,000+10 - 49 employeesScotts Valley, CARead More
CVisionLab is a computer vision research company founded in 2009. Operating out of Russia, the team of over 20 employees specializes in AI, custom software development, and cloud consulting. Their clientele primarily consists of small businesses.
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Justitia DigitalisIndustries
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134$10,000+10 - 49 employeesSan Jose, CARead More
Caspian IT Group is an IT company in San Jose. Founded in 2012, they have about 6 employees that serve clients in a wide range of industries. Services include IT managed services, strategy consulting, and cybersecurity.
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135$1,000+10 - 49 employeesPalo Alto, CAMinimalistech is a big data company launched in 2010. Their team focuses on BI & big data consulting & SI and Custom Software Development.Read More
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Caffeine.TvIndustries
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136$10,000+50 - 249 employeesCarlsbad, CAAlphaBOLD, a CRM consulting and SI company, was established in 2017. The company focuses on CRM consulting and SI and ERP consulting and SI, and is midsize.Read More
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MechCo Group LLC Green Project Technologies TaylorMade Golf MechCo Group LLCIndustries
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137Undisclosed10 - 49 employeesSacramento, CARead More
Cloud consulting & SI company Leverage IT Consulting is based in Sacramento, California and Reno, Nevada. The small team provides cloud consulting & SI, IT managed services, cybersecurity, and IT strategy consulting. The firm was established in 2001.
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138$1,000+10 - 49 employeesIrvine, CARead More
TeraPixels Systems is an IT firm based in Irvine, Calif., and founded in 1996. Their team of no more than 50 offers IT managed services and IT strategy consulting solutions for small and mid-market agencies in the fields of healthcare, IT, and more.
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Invisible ArmorIndustries
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139$1,000+2 - 9 employeesLos Angeles, CARazz Professional Services, Inc., an IT managed services company, was established in 2010. The agency focuses on IT managed services and has a small team.Read More
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140$1,000+10 - 49 employeesCity of Industry, CAASi-Networks is a City of Industry, California-based Cybersecurity company. The small firm was established in 1998. Their services include Cybersecurity, IT managed services, IT strategy consulting, cloud consulting & SI, and more.Read More
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141Undisclosed2 - 9 employeesLos Angeles, CAHeadquartered in Los Angeles, California, DevSignal is an IT staff augmentation company. The small firm was founded in 2023. Their team offers IT staff augmentation, Staffing, Recruiting, IT managed services, and more.Read More
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142$75,000+250 - 999 employeesSan Francisco, CARead More
Traction is a full-service marketing agency located in San Francisco. With a team of nearly 250 employees, Traction provides web design, advertising, UI/UX design, and branding services to enterprise and midmarket clients.
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AppleIndustries
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143$1,000+50 - 249 employeesSouth San Francisco, CARead More
Aston Technologies is a midsize IT staff augmentation company. The Minneapolis, Minnesota-based firm was founded in 2001. Their services include IT staff augmentation and IT managed services.
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144$5,000+10 - 49 employeesSan Jose, CANevtec is a small IT managed services company. The San Jose, California-based company was launched in 1996. Their team focuses on IT managed services, IT strategy consulting, and Cybersecurity.Read More
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145$5,000+10 - 49 employeesLos Angeles, CARead More
DCG Technical Solutions, Inc is an IT services company founded in 1993 and located in Los Angeles. With a team of fewer than 50 employees, they provide IT managed services and cloud consulting services to clients in the manufacturing, financial services, and business services industries.
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Iconic InvestmentsIndustries
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146$50,000+10 - 49 employeesSan Francisco, CARead More
Go Nimbly is a technical consulting firm founded in 2013. Headquartered in San Francisco, Calif., Go Nimbly's approximately 20 employees specialize in CRM consulting and SI, custom software development, and UX/UI design. The client appreciated Go Nimbly's comprehensive documentation, which enabled them to track the progress of integration and development up until deployment.
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147$1,000+10 - 49 employeesRocklin, CAIntegral Networks is a small IT managed services company. Founded in 2004, the agency is headquartered in Rocklin, California. Their team offers IT managed services.Read More
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148$5,000+10 - 49 employeesCosta Mesa, CARead More
KMicro Tech, Inc. is an IT services company based in Costa Mesa, Calif. The company, founded in 2014, has more than 40 employees that provide, among others, IT managed services as well as cybersecurity, cloud consulting & SI services to small and midmarket companies and institutions.
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SoftchoiceIndustries
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149$5,000+10 - 49 employeesLos Angeles, CARead More
Launched in 2004, Advanced Networks is an IT strategy consulting company. Based in Los Angeles, California, their small team focuses on IT strategy consulting, cloud consulting & SI, cybersecurity, IT managed services, and more.
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150$1,000+10 - 49 employeesPasadena, CAIT managed services company AdviseTech is based in Pasadena, California. The small team focuses on IT managed services, cloud consulting & SI, and Cybersecurity. The company was founded in 1998.Read More
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Schedule ConsultationMost Reviewed IT Services Company in California
Check out an IT Services Company in California with the most new reviews in the past 12 months.
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