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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1921Undisclosed2 - 9 employeesCampbell, CAGeoIdentity Inc, a big data analytics company, is located in Campbell, California. They specialize in BI & big data consulting & SI and Artificial Intelligence.Read More
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1922UndisclosedFreelancer employeesHuntington Beach, CAVasSecCo is a Cybersecurity company. Their team is headquartered in Huntington Beach, California and provides Cybersecurity.Read More
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1923Undisclosed2 - 9 employeesWalnut Creek, CALaunched in 2016, Aleada Consulting is a small IT strategy consulting company. Their team specializes in IT strategy consulting.Read More
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1924Undisclosed2 - 9 employeesLos Angeles, CALive Proxies is a business intelligence company. They were launched in 2020 and offer BI & big data consulting & SI.Read More
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1925Undisclosed50 - 249 employeesFolsom, CAFounded in 2001, Introlligent is an IT strategy consulting company. The midsize team focuses on IT strategy consulting and IT managed services.Read More
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1926Undisclosed2 - 9 employeesSan Diego, CAFounded in 2023, iterQ is an IT strategy consulting company. Their team offers IT strategy consulting and cloud consulting & SI.Read More
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1927Undisclosed10 - 49 employeesLos Angeles, CAFounded in 1991, Sysnet Solutions is a small Los Angeles, California-based cloud consulting & SI company. Their services include cloud consulting & SI and Cybersecurity.Read More
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1928Undisclosed2 - 9 employeesHuntington Beach, CAServer Solution Plus is an IT managed services company. They are based in Huntington Beach, California and have small team. Their team focuses on IT managed services and Cybersecurity.Read More
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1929Undisclosed10 - 49 employeesMonterey, CALaunched in 2008, Rayne Technology Solutions, Inc. Is a Cybersecurity and IT managed services company. Their team focuses on Cybersecurity and IT managed services.Read More
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1930Undisclosed10 - 49 employeesTemecula, CALaunched in 1996, Umetech, Inc. Is a small IT strategy consulting company located in Temecula, California. Their team provides IT strategy consulting and cloud consulting & SI.Read More
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1931Undisclosed50 - 249 employeesLos Angeles, CAPrescient is a midsize Cybersecurity company in Chicago, Illinois and Arlington, Virginia. Their services include Cybersecurity.Read More
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1932Undisclosed2 - 9 employeesSan Diego, CABryce Cyber is a small San Diego, California-based Cybersecurity company. Their services include Cybersecurity and Commercial Financing.Read More
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1933Undisclosed50 - 249 employeesSunnyvale, CABaidu USA is an artificial intelligence firm. The Sunnyvale, California-based company was founded in 2014. Their team specializes in Artificial Intelligence and Advertising.Read More
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1934Undisclosed50 - 249 employeesMorgan Hill, CADigital Green Global, Inc. Is an IT strategy consulting and IT managed services company launched in 2005. The midsize team offers IT strategy consulting and IT managed services.Read More
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1935Undisclosed10 - 49 employeesEl Monte, CAWest Coast Computer Recycler is an IT managed services company. The El Monte, California-based team offers IT managed services.Read More
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1936Undisclosed50 - 249 employeesSan Francisco, CAGenetsis Group is a San Francisco, California-based Marketing Strategy company. The team offers Marketing Strategy and ECM consulting and SI.Read More
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1937Undisclosed10 - 49 employeesSan Francisco, CAInnovate Group is a business intelligence company launched in 2015. The small team offers BI & big data consulting & SI and UX/UI Design.Read More
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1938$1,000+10 - 49 employeesSunnyvale, CAArosys Technologies, a small software development company, is headquartered in Sunnyvale, California and Bhilai, India. The team focuses on Custom Software Development and Application Testing.Read More
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1939$1,000+10 - 49 employeesSan Ramon, CARoundtechsquare is a social media marketing agency. The team specializes in Social Media Marketing and Search Engine Optimization and is based in San Ramon, California and Vadodara, India.Read More
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1940$50,000+50 - 249 employeesSunnyvale, CASapidBlue Technologies is a software development firm launched in 2021. Their midsize team is in Sunnyvale, California and Gurugram, India. The firm provides custom software development, Artificial Intelligence, IT strategy consulting, and blockchain.Read More
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1941$25,000+10 - 49 employeesPasadena, CAFounded in 2019, Conode.ai is a small AI company. Their team provides Artificial Intelligence and Generative AI.Read More
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1942$10,000+10 - 49 employeesWestminster, CASoftware development firm MLTech Soft was launched in 2020. Their small team is located in Ho Chi Minh City, Vietnam; Singapore, Singapore and Westminster, California and focuses on Custom Software Development, IT managed services, Artificial Intelligence, Enterprise App Modernization, and more.Read More
Clients
PSA Marine Private Limited Unilever Vietnam International Company Limited Lof International Dairy Products Joint Stock Company Yen Viet Joint Stock CompanyIndustries
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1943$1,000+50 - 249 employeesSan Jose, CALaunched in 2011, Menteso, a midsize IT managed services company, is located in San Jose, California and Noida, India. Their services include IT managed services.Read More
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1944$10,000+1,000 - 9,999 employeesSan Francisco, CAEpsilon is a web development company headquartered in San Francisco, California; Palo Alto, California; Irving, Texas and Bengaluru, India. The large team provides Web Development, Mobile App Development, Market Research, Digital Strategy, and more. The agency was launched in 1969.Read More
Clients
California State LotteryIndustries
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1945$25,000+2 - 9 employeesLos Angeles, CATOPCONE INC is a software development firm. The firm is in Los Angeles, California. Their services include Custom Software Development and Mobile App Development.Read More
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1946Undisclosed2 - 9 employeesLos Angeles, CABusiness Consulting company Rubenstein-Justman Management Consultants is based in Los Angeles, California. They focus on Business Consulting and Digital Strategy and were launched in 1986.Read More
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1947Undisclosed2 - 9 employeesLivermore, CAAnne Griffith Tax & Financial, an Accounting company, is headquartered in Livermore, California. Their services include Accounting and cloud consulting & SI.Read More
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1948Undisclosed2 - 9 employeesWalnut Creek, CAHeadquartered in Walnut Creek, California, APC Digital Media is a small IT managed services company. The team offers IT managed services and Search Engine Optimization.Read More
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1949Undisclosed2 - 9 employeesCerritos, CANirmiti Inc. Is a SEO services firm. Launched in 2001, the team focuses on Search Engine Optimization and Web Design.Read More
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1950Undisclosed2 - 9 employeesNapa, CAThe AIS Group, a custom software development company, was launched in 1995. Headquartered in Napa, California, the team specializes in Custom Software Development and ERP consulting and SI.Read More
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Check out an IT Services Company in California with the most new reviews in the past 12 months.
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