Top 100 Managed Service Providers in California
The Best of December 2025Looking for a top managed service provider in California?
If you’re looking for services that can spare you from complex, time-consuming, and sometimes counterproductive tasks? Perhaps managed service providers can help you and your business. You can rest easy by relying on managed service providers to handle any tedious tasks.
Managed service providers are outsourced third-party companies that provide different support efforts including network, application, security, and payroll works. Businesses and organizations hire managed service providers because of their flexibility and ability to relieve repetitive tasks. Great managed service providers create custom solutions to cater to the different needs of every business. Such services are worthwhile investments especially for startups and midsize businesses that want to have their in-house teams focus on their operations.
To assist you in your search for a partner, we’ve compiled this list of the top IT managed services in California. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best California Managed Services
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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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421$1,000+10 - 49 employeesCosta Mesa, CAFounded in 2024, Coastal IT Services is a small IT strategy consulting company. Their team provides IT strategy consulting and Cybersecurity.Read More
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422$1,000+10 - 49 employeesFolsom, CAStech Group is an unified communications consulting & SI company. They were launched in 2016, and their services include unified communications consulting & SI and IT managed services.Read More
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423$1,000+50 - 249 employeesTurlock, CAEstablished in 2025, VaultEdge IT is a midsize IT strategy consulting company in Turlock, California. Their team specializes in IT strategy consulting and cloud consulting & SI.Read More
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424Undisclosed50 - 249 employeesSan Mateo, CAFounded in 1979, Caccia Plumbing, a midsize SEO agency, is based in San Mateo, California. Their team specializes in Search Engine Optimization and UX/UI Design.Read More
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425$50,000+1,000 - 9,999 employeesSan Francisco, CARead More
Bluewolf is a global Salesforce consulting agency based in New York, with offices in San Francisco, Boston, Atlanta, and London. Founded in 2000, their team of about 1,200 employees provides services for enterprise and mid-market businesses. They specialize in CRM consulting, IT managed services, system information, and cloud consulting.
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Stanley Black & DeckerIndustries
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426Undisclosed10 - 49 employeesSan Diego, CAIn San Diego, California and Briarcliff Manor, New York, Platinum Cubed LLC is a CRM consulting and SI company. Their services include CRM consulting and SI and Business Consulting.Read More
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427$5,000+10 - 49 employeesLos Angeles, CANorth Blue Networks, a Cybersecurity company, was established in 1998. The team specializes in Cybersecurity and IT managed services.Read More
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428$5,000+10 - 49 employeesFremont, CAProkopto is a small IT strategy consulting company headquartered in Fremont, California. The team offers IT strategy consulting and cloud consulting & SI.Read More
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429Undisclosed10 - 49 employeesIrvine, CABB2 Technology Group is a small Irvine, California-based UX design company. The team focuses on UX/UI Design and BI & big data consulting & SI.Read More
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430Undisclosed250 - 999 employeesPalo Alto, CAEstablished in 2016, Opentrends US is an AI development company. The team specializes in Artificial Intelligence and IT managed services.Read More
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431Undisclosed10 - 49 employeesSan Francisco, CAFounded in 1987, Langtech is a small IT managed services company. Their services include IT managed services and Custom Software Development.Read More
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432$1,000+10 - 49 employeesLos Angeles, CAM-Theory Group is a cloud consulting & SI company located in Los Angeles, California. Founded in 1998, the team specializes in cloud consulting & SI and IT managed services.Read More
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433$1,000+10 - 49 employeesSan Diego, CALaunched in 2007, Windward Technology is a Cybersecurity company. The small team focuses on Cybersecurity and IT strategy consulting.Read More
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434Undisclosed10 - 49 employeesLaguna Hills, CAZephyr Networks, Inc. Is an IT strategy consulting company. The team offers IT strategy consulting and BI & big data consulting & SI, and the company is located in Laguna Hills, California.Read More
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435Undisclosed10 - 49 employeesRoseville, CAZenxeon Technologies, a web design company, was launched in 2004. They offers Web Design and IT strategy consulting.Read More
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436Undisclosed10 - 49 employeesCastaic, CAThe Good IT Company is a cloud consulting & SI company. The Castaic, California-based agency was founded in 2020. Their team provides cloud consulting & SI and Cybersecurity.Read More
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437$1,000+10 - 49 employeesCulver City, CAOverwatch Group, an IT strategy consulting company, is based in Montville, New Jersey and Culver City, California. Their services include IT strategy consulting and cloud consulting & SI.Read More
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438$1,000+2 - 9 employeesWalnut Creek, CANerd Crossing, an IT managed services company, provide IT managed services and Cybersecurity. They were established in 2010.Read More
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439$5,000+250 - 999 employeesSan Ramon, CAHeadquartered in San Ramon, California and Reading , England, Synverse is an Accounting company. They specialize in Accounting and Advertising.Read More
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440$5,000+250 - 999 employeesMilpitas, CAForsys Inc is a Milpitas, 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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441$5,000+2 - 9 employeesRedlands, CAEstablished in 2011, eTop Technology, Inc is a small cloud consulting & SI company. Their services include cloud consulting & SI and IT managed services.Read More
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442Undisclosed2 - 9 employeesSanta Monica, CAThe Raven Company is a small Santa Monica, California-based web design company. Their services include Web Design and IT managed services.Read More
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443$10,000+2 - 9 employeesEl Dorado Hills, CALocated in El Dorado Hills, California, Konfidi Health - Trusted Imaging Advisors is an IT strategy consulting company. Their services include IT strategy consulting and BI & big data consulting & SI.Read More
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444$5,000+10 - 49 employeesThousand Oaks, CAZuma Technology is an IT managed services company in Thousand Oaks, California. They focus on IT managed services.Read More
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445$10,000+10 - 49 employeesLos Angeles, CAIT managed services company Streamline Networks offers IT managed services and cloud consulting & SI. They were established in 2001.Read More
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446$10,000+10 - 49 employeesSan Diego, CACompuOne Corporation is an IT managed services company based in San Diego, California. The team provides IT managed services and ECM consulting and SI.Read More
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447$5,000+2 - 9 employeesFresno, CAJ - I.T. Outsource is a small IT managed services company founded in 2014. Their team provides IT managed services and IT strategy consulting.Read More
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448$5,000+50 - 249 employeesCamarillo, CAOasis Technology is an IT managed services company. The Camarillo, California-based agency was established in 1979. Their services include IT managed services and IT strategy consulting.Read More
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449$5,000+10 - 49 employeesIrvine, CABCS is an IT managed services company headquartered in Irvine, California. They provide IT managed services.Read More
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450$5,000+50 - 249 employeesSouth San Francisco, CANetswitch Technology Management Inc is a midsize IT managed services company established in 2000. Their team offers IT managed services and IT strategy consulting.Read More
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