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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1681$10,000+50 - 249 employeesSan Diego, CARead More
BitCot is a development firm from San Diego. It was founded in 2011 and has grown to a team of more than 30 that does mobile app development, web development, and custom software development for small and large companies alike.
Clients
Dick's Sporting GoodsIndustries
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1682$5,000+50 - 249 employeesLos Angeles, CAFounded in 2004, Infoway is a midsize Los Angeles, California-based website development company. Their team focuses on Web Development and cloud consulting & SI.Read More
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1683Undisclosed50 - 249 employeesFolsom, CAMicrosan Consultancy Services, an AR/VR development company, was launched in 2010. They specializes in AR/VR development and cloud consulting & SI.Read More
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1684Undisclosed50 - 249 employeesRancho Cucamonga, CAVavrinek, Trine, Day & Co., LLP is an Accounting company in Rancho Cucamonga, California. Launched in 1948, the team provides Accounting and Cybersecurity.Read More
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1685Undisclosed50 - 249 employeesPalo Alto, CACustom software development company Factored focuses on Custom Software Development and BI & big data consulting & SI. They were launched in 2019.Read More
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1686Undisclosed50 - 249 employeesCampbell, CAIT managed services company OSI Engineering, Inc. Was founded in 2010. Based in Campbell, California, the team specializes in IT managed services and Accounting.Read More
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1687Undisclosed50 - 249 employeesIrvine, CALaunched in 2006, OrangePeople is a custom software development company. The team specializes in Custom Software Development and BI & big data consulting & SI.Read More
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1688Undisclosed50 - 249 employeesAnaheim, CAUB Technology Innovations (UBTI) is a cloud consulting & SI company. The Anaheim, California-based team focuses on cloud consulting & SI and Custom Software Development.Read More
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1689Undisclosed50 - 249 employeesSan Mateo, CAMarvel Marketers is a branding firm. The San Mateo, California-based team provides Branding and Marketing Strategy.Read More
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1690Undisclosed50 - 249 employeesDublin, CAFounded in 2014, InnovaPath Inc is a midsize UX design agency. Their team focuses on UX/UI Design and cloud consulting & SI.Read More
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1691Undisclosed50 - 249 employeesSan Francisco, CATestRigor is an Application Testing company. Established in 2015, the company is based in San Francisco, California. Their team focuses on Application Testing and ERP consulting and SI.Read More
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1692Undisclosed50 - 249 employeesChico, CALiatrio, a cloud consulting & SI company, was launched in 2023. The team focuses on cloud consulting & SI and Custom Software Development and is headquartered in Chico, California.Read More
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1693Undisclosed50 - 249 employeesSan Ramon, CALocated in San Ramon, California, Iron Horse is a midsize CRM consulting and SI company. The team focuses on CRM consulting and SI and AR/VR development.Read More
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1694Undisclosed50 - 249 employeesMill Valley, CAArize AI, a cloud consulting & SI company, was founded in 2019. The team offers cloud consulting & SI and Artificial Intelligence and is based in Mill Valley, California.Read More
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1695Undisclosed50 - 249 employeesSanta Clara, CAUX company Ab Ovo, Inc. Was founded in 2006. The agency offers UX/UI Design and BI & big data consulting & SI.Read More
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1696Undisclosed50 - 249 employeesSan Francisco, CAHeadquartered in San Francisco, California, Swish Analytics is a Market Research company. Their services include Market Research and BI & big data consulting & SI.Read More
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1697Undisclosed50 - 249 employeesCampbell, CAMaxonic is an Englewood, Colorado-based Staffing company. Their services include Staffing and BI & big data consulting & SI.Read More
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1698Undisclosed50 - 249 employeesSan Francisco, CAOdetta, Inc. Is a social media marketing agency located in San Francisco, California. They provide Social Media Marketing and Search Engine Optimization.Read More
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1699Undisclosed50 - 249 employeesDavis, CAMarket Research company Engage3 was founded in 2008. The company specializes in Market Research and Digital Strategy.Read More
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1700$25,000+50 - 249 employeesCupertino, CAPredikly LLC, an artificial intelligence company, focus on Artificial Intelligence and other IT consulting and SI. They were launched in 2017.Read More
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1701$10,000+250 - 999 employeesSunnyvale, CASedin Technologies is an IT strategy consulting company. The midsize team is based in Sunnyvale, California; Chennai, India; Fredericton, Canada and Bengaluru, India. Their services include IT strategy consulting, BI & big data consulting & SI, and Custom Software Development.Read More
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1702Undisclosed50 - 249 employeesPleasanton, CAStaffing company Netwoven focuses on Staffing and BI & big data consulting & SI. They were launched in 2001.Read More
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1703Undisclosed250 - 999 employeesIrvine, CAInterra Information Technologies is a cloud consulting & SI company. Founded in 1996, their team focuses on cloud consulting & SI and Cybersecurity.Read More
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1704$5,000+50 - 249 employeesOrange, CALumen21, Inc is a cloud consulting & SI company. Based in Orange, California and Mumbai, India, the firm was launched in 2007. Their team offers cloud consulting & SI and Cybersecurity.Read More
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1705Undisclosed10 - 49 employeesSan Francisco, CACloud consulting & SI and CRM consulting and SI company Advanced Communities is based in London, United Kingdom and San Francisco, California. The small team provides cloud consulting & SI and CRM consulting and SI and was established in 2008.Read More
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1706$50,000+50 - 249 employeesLos Angeles, CARead More
Hvantage Technologies Inc is a Los Angeles-based digital agency that was founded in 2011. With more than 200 employees, the agency has experts in mobile app and custom software development, UX/UI design, and web design.
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1707Undisclosed50 - 249 employeesPleasanton, CASuiteMatrix IT Solutions is a CRM consulting and SI company based in Coimbatore, India and Pleasanton, California. Launched in 2019, the team offers CRM consulting and SI and ERP consulting and SI.Read More
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1708Undisclosed50 - 249 employeesDublin, CAUser experience company Canvendor is based in Dublin, California and Chennai, India. The team provides UX/UI Design and IT strategy consulting.Read More
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1709Undisclosed2 - 9 employeesSanta Ana, CAFounded in 2024, Falconforce Consulting is a Cybersecurity company. The team specializes in Cybersecurity and Blockchain and is headquartered in Santa Ana, California.Read More
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1710Undisclosed50 - 249 employeesSan Ramon, CABluvium, a CRM consulting and SI and ERP consulting and SI company, was launched in 2015. The team offers CRM consulting and SI 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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