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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1351Undisclosed2 - 9 employeesTemecula, CAMap Ranking is a social media marketing agency. Founded in 2023, the agency specializes in Social Media Marketing and Search Engine Optimization.Read More
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1352$5,000+10 - 49 employeesCarlsbad, CAEstablished in 2019, Scleraworx is an IT managed services company. The agency provides IT managed services and Web Development.Read More
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1353Undisclosed10 - 49 employeesMountain View, CASonify is a small IT managed services company headquartered in Mountain View, California. The team specializes in IT managed services and Call Center Services.Read More
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1354$50,000+10 - 49 employeesCupertino, CANewstar Corporation is a small cloud consulting & SI company located in Cupertino, California and Bengaluru, India. The team focuses on cloud consulting & SI and IT managed services.Read More
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1355$5,000+2 - 9 employeesRedondo Beach, CAJumpSmartTalent, a Recruiting company, was established in 2015. The company provides Recruiting and BI & big data consulting & SI, and is small.Read More
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1356$1,000+2 - 9 employeesLos Angeles, CANytwork,Inc., a SEO company, was established in 2021. They provides Search Engine Optimization and Cybersecurity.Read More
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1357$5,000+2 - 9 employeesSan Diego, CAClinical Enroll is a Conversion Optimization company. Based in San Diego, California, the team provides Conversion Optimization and Pay Per Click.Read More
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1358$5,000+10 - 49 employeesSan Jose, CATalaria Platform, Inc is a software development company based in San Jose, California. Their services include Custom Software Development and Microservices Architecture Services.Read More
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1359$10,000+10 - 49 employeesLos Angeles, CAE-commerce development firm Dimension Software is based in Los Angeles, California. Established in 1998, the team focuses on E-Commerce Development and Mobile App Development.Read More
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1360Undisclosed2 - 9 employeesConcord, CAALFATEK is a Concord, California-based branding agency. They offer Branding and Social Media Marketing.Read More
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1361$5,000+50 - 249 employeesAnaheim, CAAxis Technical Group, Inc. Is an IT strategy consulting company founded in 2002. The firm offers IT strategy consulting and CRM consulting and SI.Read More
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1362Undisclosed50 - 249 employeesWalnut Creek, CAMalikCo, a Business Consulting company, offers Business Consulting and IT strategy consulting. The firm is in Walnut Creek, California.Read More
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1363Undisclosed50 - 249 employeesMonterey, CABusiness Consulting company Advanced Onion, Inc. Was established in 2006. The team focuses on Business Consulting and Custom Software Development and is located in Monterey, California.Read More
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1364Undisclosed50 - 249 employeesSan Francisco, CAFounded in 1999, Francisco Partners is a midsize IT managed services company based in San Francisco, California and London, England. Their team provides IT managed services and Commercial Financing.Read More
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1365Undisclosed50 - 249 employeesFremont, CAInterSources Inc, a midsize UX agency, is based in Wilmington, Delaware and Fremont, California. The team provides UX/UI Design and BI & big data consulting & SI.Read More
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1366$5,000+50 - 249 employeesCommerce, CAEstablished in 2023, DevelopersPerHour, a midsize application development company, is headquartered in Commerce, California. Their team specializes in Mobile App Development and Web Development.Read More
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1367Undisclosed50 - 249 employeesSanta Clara, CAMidsize user experience design company Infotech Spectrum Inc, is headquartered in Santa Clara, California. The team specializes in UX/UI Design and IT strategy consulting.Read More
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1368Undisclosed50 - 249 employeesIrvine, CACnetric Global Inc. Is a midsize CRM consulting and SI company founded in 2003. Their services include CRM consulting and SI and IT managed services.Read More
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1369Undisclosed50 - 249 employeesSan Jose, CAInfobahn Softworld Inc is a cloud consulting & SI company. The agency is based in Toronto, Canada and San Jose, California. Their team focuses on cloud consulting & SI and Application Testing.Read More
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1370Undisclosed50 - 249 employeesSanta Ana, CARencata, a midsize IT strategy consulting company, is headquartered in Santa Ana, California and Puducherry, India. The team focuses on IT strategy consulting and BI & big data consulting & SI.Read More
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1371Undisclosed50 - 249 employeesSan Francisco, CALocated in San Francisco, California and Cork, Ireland, 33Floors is a midsize business intelligence company. The team provides BI & big data consulting & SI and Corporate Training & Coaching.Read More
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1372Undisclosed50 - 249 employeesSan Francisco, CAOdaseva, a Compliance Consulting company, was established in 2012. The agency provides Compliance Consulting and IT strategy consulting.Read More
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1373Undisclosed50 - 249 employeesPleasanton, CATechbee Solutions is an IT strategy consulting company established in 2018. Their team focuses on IT strategy consulting and IT managed services.Read More
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1374Undisclosed50 - 249 employeesSan Francisco, CAFluxon is a business intelligence company. Their midsize team is based in San Francisco, California. Their services include BI & big data consulting & SI and UX/UI Design.Read More
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1375Undisclosed50 - 249 employeesSanta Clara, CAMarrina Decisions is a Santa Clara, California-based CRM consulting and SI company. They specialize in CRM consulting and SI and Email Marketing and were founded in 2013.Read More
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1376Undisclosed50 - 249 employeesSan Francisco, CASpiceOrb is a big data company. Their midsize team is based in San Francisco, California. Their services include BI & big data consulting & SI and Cybersecurity.Read More
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1377Undisclosed50 - 249 employeesDublin, CABased in Dublin, California, Onemind Services LLC is a midsize cloud consulting & SI company. The team focuses on cloud consulting & SI and IoT development.Read More
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1378Undisclosed50 - 249 employeesSan Diego, CAS-Square Systems, Inc, a cloud consulting & SI company, offer cloud consulting & SI and IT managed services. They were founded in 2002.Read More
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1379$1,000+50 - 249 employeesLos Angeles, CAAdvance Ghostwriting is a Los Angeles, California-based Content Marketing company. Their services include Content Marketing and Search Engine Optimization.Read More
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1380$1,000+2 - 9 employeesSan Francisco, CARead More
Web development company Zona Digital is located in L'viv, Ukraine. They specialize in web development, web design, ux/ui design, graphic design, and more and were launched in 2010.
Clients
Mental Health: Global Challenges of XXI CenturyIndustries
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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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