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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1981$10,000+10 - 49 employeesSan Francisco, CAArtificial intelligence firm dtLabs is based in Bauru, Brazil and San Francisco, California. They offer Artificial Intelligence and AI Consulting and were established in 2018.Read More
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1982Undisclosed2 - 9 employeesSacramento, CAEnterprise App Modernization company Lume Consulting Group is in Sacramento, California. Established in 2018, the team focuses on Enterprise App Modernization and BI & big data consulting & SI.Read More
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1983Undisclosed50 - 249 employeesSacramento, CANuMSP, an IT managed services company, specialize in IT managed services and other IT consulting and SI. They were launched in 2018.Read More
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1984Undisclosed10 - 49 employeesSanta Clara, CATiger Analytics is a Business Consulting company launched in 2010. Their team provides Business Consulting and Marketing Strategy.Read More
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1985$10,000+50 - 249 employeesSunnyvale, CAIT strategy consulting company TransformHub was established in 2019. The team specializes in IT strategy consulting and UX/UI Design and is based in Singapore, Singapore and Sunnyvale, California.Read More
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1986Undisclosed50 - 249 employeesIrvine, CAOnica by Rackspace Technology, a midsize big data analytics company, is located in Toronto, Canada and Irvine, California. The team offers BI & big data consulting & SI and cloud consulting & SI.Read More
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1987Undisclosed10 - 49 employeesLong Beach, CACloud Advisory LLC is an application development company founded in 2011. The small team offers Mobile App Development and Web Development.Read More
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1988$5,000+2 - 9 employeesBurbank, CAWebsite development company Kaufman International is located in Burbank, California. Launched in 2006, the team focuses on Web Development and IT managed services.Read More
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1989$1,000+Freelancer employeesIrvine, CARevlix, LLC is a CRM consulting and SI company. Established in 2023, the team specializes in CRM consulting and SI and Web Design.Read More
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1990Undisclosed50 - 249 employeesOakland, CAEstablished in 2002, Nagnoi, LLC is a midsize Business Consulting company in San Juan, Puerto Rico and Oakland, California. Their team provides Business Consulting and BI & big data consulting & SI.Read More
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1991$1,000+1,000 - 9,999 employeesSan Diego, CAInsight Global, a big data analytics company, provides BI & big data consulting & SI and cloud consulting & SI. The firm is located in Atlanta, Georgia and Birmingham, Alabama.Read More
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1992Undisclosed2 - 9 employeesSan Francisco, CAConichiwa is a Business Consulting company launched in 2017. Their services include Business Consulting and Custom Software Development.Read More
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1993Undisclosed2 - 9 employeesLos Angeles, CAEstablished in 2023, Pro Brain Solutions is a SEO agency. The small team offers Search Engine Optimization and IT managed services.Read More
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1994Undisclosed2 - 9 employeesSacramento, CABusiness Consulting company Connect Consulting Services is headquartered in Sacramento, California. Their services include Business Consulting and IT managed services.Read More
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1995Undisclosed2 - 9 employeesStockton, CAFounded in 2017, Hosting Ocean is a small IT managed services company based in Stockton, California. Their team focuses on IT managed services and Web Development.Read More
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1996Undisclosed2 - 9 employeesLos Angeles, CAIn Los Angeles, California, Heed Risk Management is a Cybersecurity company. They offer Cybersecurity and Compliance Consulting and were founded in 2019.Read More
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1997Undisclosed2 - 9 employeesPetaluma, CADeura Information Security Consulting LLC , a Compliance Consulting company, was launched in 2002. Based in Petaluma, California, the team specializes in Compliance Consulting and Cybersecurity.Read More
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1998Undisclosed2 - 9 employeesSan Francisco, CANINTH EAST Partners, a Business Consulting company, is in San Francisco, California. Their services include Business Consulting and IT strategy consulting.Read More
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1999Undisclosed2 - 9 employeesLadera Ranch, CAOps Cast is a Ladera Ranch, California-based CRM consulting and SI company. Their services include CRM consulting and SI and Business Consulting.Read More
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2000Undisclosed2 - 9 employeesLos Angeles, CATechni-Force, a Cybersecurity company, is in Los Angeles, California. Founded in 1987, the team provides Cybersecurity and Graphic Design.Read More
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2001$1,000+10 - 49 employeesSanta Ana, CAVibgyorweb Technologies Pvt Ltd is a social media marketing firm established in 2020. Their services include Social Media Marketing and Search Engine Optimization.Read More
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2002$50,000+50 - 249 employeesSan Francisco, CALaunched in 2017, Missing Corner is a midsize artificial intelligence development company. Their team offers Artificial Intelligence and Custom Software Development.Read More
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2003$5,000+10 - 49 employeesJurupa Valley, CAMovya is a web development firm established in 2021. The small Ahmedabad, India-based team provides Web Development, Application Testing, UX/UI Design, Mobile App Development, and more.Read More
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2004$50,000+250 - 999 employeesSunnyvale, CAFission Labs is a custom software development company. Established in 2008, the midsize company is in Sunnyvale, India and Hyderabad, India. Their services include custom software development, mobile app development, application testing, and web development.Read More
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2005Undisclosed1,000 - 9,999 employeesCypress, CALarge video production company AVI-SPL, is based in Virginia Beach, Virginia and Tampa, Florida. Their services include Video Production and IT managed services.Read More
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2006Undisclosed10 - 49 employeesSan Jose, CAFounded in 2011, Reblaze is a Cybersecurity company. The small team specializes in Cybersecurity and cloud consulting & SI.Read More
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2007$5,000+10 - 49 employeesBerkeley, CAINFINITE UPTIME, an IoT development company, was established in 2015. The small team focuses on IoT development and BI & big data consulting & SI.Read More
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2008Undisclosed10 - 49 employeesSanta Clarita, CADIGITAL TELECOMMUNICATION CORP (DTC) is a small Cybersecurity company. They specialize in Cybersecurity and IT managed services and were founded in 1982.Read More
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2009Undisclosed10 - 49 employeesLong Beach, CAIn Long Beach, California, Total Network Solutions is a small IT managed services and IT staff augmentation company. The team provides IT managed services and IT staff augmentation.Read More
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2010Undisclosed10 - 49 employeesHayward, CALaunched in 2006, Global Tech Studio is a small Hayward, California-based software development company. Their team offers Custom Software Development 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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