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.
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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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1561$10,000+10 - 49 employeesLos Angeles, CARead More
Beyond Enterprizes, a small blockchain company, is headquartered in Los Angeles, California; Cluj-Napoca, Romania and București, Romania. They offer blockchain, business consulting, IT strategy consulting, custom software development, and more and were established in 2012.
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1562$1,000+10 - 49 employeesSan Francisco, CAWebsite development firm NovaFlow Studio is headquartered in. The small company was founded in 2022. Their services include web development.Read More
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1563$1,000+10 - 49 employeesSanta Clara, CAArdira is a cloud consulting & SI company. Located in Santa Clara, California and Ahmedabad, India, the firm specializes in cloud consulting & SI and Mobile App Development.Read More
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1564$1,000+10 - 49 employeesTemecula, CAProgeektech Marketing is a web design company. They are based in Temecula, California and have a small team that specializes in Web Design, Search Engine Optimization, Digital Strategy, Conversion Optimization, and more. The agency was launched in 2013.Read More
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1565$10,000+10 - 49 employeesSan Bruno, CAPerceptive Analytics is a San Bruno, California-based business intelligence company. Established in 2010, the team provides BI & big data consulting & SI and Business Consulting.Read More
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1566$10,000+10 - 49 employeesSan Francisco, CAEstablished in 2021, Leoserve Interactive Inc is a branding company. They are located in Toronto, Canada; New York, New York and San Francisco, California and have a small team. The firm offers Branding, Web Design, IT strategy consulting, cloud consulting & SI, and more.Read More
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1567$10,000+250 - 999 employeesLos Angeles, CASecuronix is a Cybersecurity company. Located in Addison, Texas and Los Angeles, California, the agency specializes in Cybersecurity and BI & big data consulting & SI.Read More
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1568Undisclosed10 - 49 employeesSan Francisco, CARapidLabs, an IT strategy consulting company, was established in 2024. Based in San Francisco, California, their small team offers IT strategy consulting, Artificial Intelligence, AI Consulting, and Generative AI.Read More
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1569Undisclosed10 - 49 employeesLake Forest, CAStellar One Consulting, an ERP consulting and SI company, is located in Flower Mound, Texas and Lake Forest, California. They offer ERP consulting and SI and were established in 2011.Read More
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1570$25,000+10 - 49 employeesSan Jose, CAFounded in 2019, C9xperts Corp is a small San Jose, California-based business intelligence company. Their team specializes in BI & big data consulting & SI and cloud consulting & SI.Read More
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1571$5,000+2 - 9 employeesLos Angeles, CAIsland Technologies is an e-commerce development company. In Los Angeles, California, the team provides E-Commerce Development and Email Marketing.Read More
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1572Undisclosed2 - 9 employeesCarlsbad, CACPO Consulting LLC is a Carlsbad, California-based IT strategy consulting company. Established in 2007, the team offers IT strategy consulting and Business Consulting.Read More
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1573Undisclosed2 - 9 employeesSan Francisco, CASmall Digital Strategy company Silicon Valley Product Group, is in San Francisco, California. Their services include Digital Strategy and IT strategy consulting.Read More
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1574Undisclosed2 - 9 employeesSan Francisco, CATRUSTBYTES is a Cybersecurity company in San Francisco, California. Their services include Cybersecurity and Blockchain.Read More
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1575$10,000+10 - 49 employeesFremont, CASmall cloud consulting & SI company Sigmaways, is in Fremont, California. Their services include cloud consulting & SI and IT staff augmentation.Read More
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1576$25,000+10 - 49 employeesSan Clemente, CAAdapt360, a software development company, offers Custom Software Development and Web Development. The company is in San Clemente, California.Read More
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1577Undisclosed10 - 49 employeesSacramento, CABased in Sacramento, California, Graviton Consulting Services is a Staffing company. They provide Staffing and Custom Software Development.Read More
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1578Undisclosed10 - 49 employeesSan Francisco, CAEstablished in 2017, Observe.AI is a small artificial intelligence development company. Their team provides Artificial Intelligence and BI & big data consulting & SI.Read More
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1579Undisclosed10 - 49 employeesAntioch, CA365 Days On is an IT managed services company launched in 2015. The team provides IT managed services and Web Development and is headquartered in Antioch, California.Read More
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1580Undisclosed10 - 49 employeesCoronado, CAJoint Tactics and Technologies is a Cybersecurity company. In Coronado, California, their small team specializes in Cybersecurity and Custom Software Development. The firm was founded in 2010.Read More
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1581Undisclosed10 - 49 employeesSan Diego, CACypher Analytics, Inc. Is a Financial Consulting company. In San Diego, California, their small team specializes in Financial Consulting and Cybersecurity. The agency was launched in 2004.Read More
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1582Undisclosed10 - 49 employeesOrange, CABased in Orange, California, Omni Integration is an IT managed services company. The team offers IT managed services and Enterprise App Modernization.Read More
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1583Undisclosed10 - 49 employeesMenlo Park, CAWireMock, a small API Development company, is in Menlo Park, California. The team provides API Development and cloud consulting & SI.Read More
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1584Undisclosed10 - 49 employeesCorte Madera, CABased in Corte Madera, California, Mammoth Growth is a Marketing Strategy company. Launched in 2015, the team specializes in Marketing Strategy and Email Marketing.Read More
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1585Undisclosed10 - 49 employeesMonterey, CAHMA, a CRM consulting and SI company, was launched in 1984. The team specializes in CRM consulting and SI and Business Consulting.Read More
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1586$250,000+50 - 249 employeesDanville, CAIT managed services company GLOBAL PM CANADA is headquartered in Markham, Canada and Danville, California. The team focuses on IT managed services and cloud consulting & SI.Read More
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1587$1,000+50 - 249 employeesPalo Alto, CAArtificial intelligence firm Hackerbay Germany offers Artificial Intelligence and cloud consulting & SI. They are based in Berlin, Germany and Palo Alto, California.Read More
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1588Undisclosed50 - 249 employeesSanta Barbara, CAInvoca, an Advertising company, is headquartered in Santa Barbara, California. The team offers Advertising and Call Center Services.Read More
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1589Undisclosed50 - 249 employeesRedwood City, CAPierry Inc., A Wunderman Thompson Company, a CRM consulting and SI company, provides CRM consulting and SI and Email Marketing. The agency is based in Redwood City, California.Read More
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1590Undisclosed50 - 249 employeesSan Francisco, CAAva is an IT managed services company. Launched in 2014, the company is based in San Francisco, California and Paris, France. Their services include IT managed services and Mobile App Development.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.
Most Reviewed
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