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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601$1,000+10 - 49 employeesRancho Cucamonga, CANerdTek Inc is an IT managed services company. Their small team is in Rancho Cucamonga, California. Their services include IT managed services, Mobile & App Marketing, Web Development, Mobile App Development, and more. The company was founded in 2007.Read More
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602$5,000+2 - 9 employeesSanta Monica, CAEdge Solutions Group is an IT managed services company. They are headquartered in Santa Monica, California, and their services include IT managed services and cloud consulting & SI.Read More
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603$5,000+2 - 9 employeesIrvine, CAKyber Systems, an IT managed services company, focuses on IT managed services and Cybersecurity. The agency is headquartered in Irvine, California.Read More
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604$1,000+2 - 9 employeesSan Diego, CAInfinity Networking, Inc., an IT managed services company, was established in 2001. The agency provides IT managed services and Cybersecurity.Read More
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605$1,000+2 - 9 employeesPasadena, CAKairos Partners is an IT strategy consulting company launched in 2016. Their team specializes in IT strategy consulting and IT managed services.Read More
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606$5,000+10 - 49 employeesLos Angeles, CAVitalpoint IT Suport Los Angeles is a small Los Angeles, California-based IT managed services company. The team focuses on IT managed services and Cybersecurity.Read More
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607$1,000+2 - 9 employeesSamoa, CABased in Samoa, California, Alternative Business Concepts is an IT managed services company. Their services include IT managed services and unified communications consulting & SI.Read More
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608$1,000+10 - 49 employeesSan Diego, CAIT managed services company Smart Voice Network focuses on IT managed services and IT strategy consulting. They are in San Diego, California.Read More
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609Undisclosed10 - 49 employeesEscondido, CAHoop5 Networks is a Cybersecurity company in Escondido, California. They provide Cybersecurity and IT managed services.Read More
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610$1,000+10 - 49 employeesRancho Cordova, CASmall IT managed services company Datacate, Inc, is headquartered in Rancho Cordova, California. The team focuses on IT managed services and IT strategy consulting.Read More
Clients
Arbor Financial SystemsIndustries
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611$1,000+50 - 249 employeesLos Angeles, CARSA List Services is a big data company. The team provides BI & big data consulting & SI and ECM consulting and SI, and the firm is located in Los Angeles, California and Los Angeles, California.Read More
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612$5,000+2 - 9 employeesSan Clemente, CAEstablished in 2018, Cloud Advisors Inc is a cloud consulting & SI and other IT consulting and SI company. The agency specializes in cloud consulting & SI and other IT consulting and SI.Read More
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613$1,000+250 - 999 employeesIrvine, CAFounded in 2009, Adamant Systems is an IT staff augmentation company. The agency specializes in IT staff augmentation and IT strategy consulting, and is midsize.Read More
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614$5,000+10 - 49 employeesLos Angeles, CAHeadquartered in Los Angeles, California, Methodology IT is an IT managed services company. Founded in 1998, the team offers IT managed services and cloud consulting & SI.Read More
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615$1,000+2 - 9 employeesSan Diego, CASmall Cybersecurity company Tech Kahunas, is located in San Diego, California. Their services include Cybersecurity and IT managed services.Read More
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616Undisclosed2 - 9 employeesMountain View, CALaunched in 2018, GSDSolutions LLC is an IT managed services company. The small team focuses on IT managed services and IT strategy consulting.Read More
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617Undisclosed2 - 9 employeesBurbank, CABased in Burbank, California and Woodbridge Township, New Jersey, Mentor Consulting Services is a small ERP consulting and SI company. The team offers ERP consulting and SI.Read More
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618Undisclosed10 - 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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619$25,000+2 - 9 employeesSan Diego, CAFounded in 2019, Enstal Technologies is a small San Diego, California-based Cybersecurity company. Their team offers Cybersecurity and IT strategy consulting.Read More
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620Undisclosed2 - 9 employeesAnaheim, CABased in Anaheim, California, IT Meristem is a small IT managed services company. The team specializes in IT managed services and IT strategy consulting.Read More
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621Undisclosed10 - 49 employeesIrvine, CAMedical ITG, an IT strategy consulting and IT managed services company, was launched in 2015. Located in Irvine, California, the team offers IT strategy consulting and IT managed services.Read More
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622$1,000+2 - 9 employeesCosta Mesa, CAEZ Tek Support is an IT managed services company. Founded in 2020, the team focuses on IT managed services and Cybersecurity. The company is based in Costa Mesa, California.Read More
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623Undisclosed2 - 9 employeesLake Elsinore, CAIT managed services company COM3 IT Solutions focuses on IT managed services and Cybersecurity. They were founded in 2010.Read More
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624Undisclosed2 - 9 employeesHuntington Beach, CASurf City Systems is an IT strategy consulting company. The Huntington Beach, California-based team offers IT strategy consulting and cloud consulting & SI.Read More
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625Undisclosed2 - 9 employeesRancho Santa Margarita, CAIT managed services company Panoply It Solutions Inc is based in Rancho Santa Margarita, California. The team specializes in IT managed services and cloud consulting & SI.Read More
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626Undisclosed10 - 49 employeesSan Diego, CAImpel Consulting is a CRM consulting and SI company. The team is headquartered in San Diego, California and Irvine, California, and their services include CRM consulting and SI.Read More
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627$1,000+10 - 49 employeesLaguna Hills, CAProTechtion IT is an IT managed services company. They are in Laguna Hills, California. Their team focuses on IT managed services and cloud consulting & SI.Read More
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628$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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629Undisclosed10 - 49 employeesPaso Robles, CAWTC Business Technology Services is a small IT managed services company. They focus on IT managed services and Cybersecurity and were established in 2012.Read More
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630$1,000+2 - 9 employeesSan Diego, CAEstablished in 2008, SD IT Service is an IT strategy consulting and IT managed services company. The team provides IT strategy consulting and 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
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