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.
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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2071Undisclosed50 - 249 employeesNewark, CACloudwick is a cloud consulting & SI company established in 2011. The team provides cloud consulting & SI.Read More
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2072$25,000+50 - 249 employeesSan Francisco, CARead More
Founded in 2009, MindK is a software development company that specializes in web, custom software, and mobile app development. Their team of 56 employees, based in San Francisco, partners with small business and midmarket clients in the financial services, advertising, and media industries.
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AdidasIndustries
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2073Undisclosed10 - 49 employeesDuarte, CAStaffing company ITGen Systems Inc. Is in Duarte, California. They provide Staffing and IT strategy consulting.Read More
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2074Undisclosed10 - 49 employeesIrvine, CAUX design company Avente, Inc. Was founded in 2017. The firm specializes in UX/UI Design and IT managed services, and is small.Read More
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2075Undisclosed10 - 49 employeesThousand Oaks, CADefined Ventures, Inc. Is a web design agency. Established in 2009, their team provides Web Design and CRM consulting and SI.Read More
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2076Undisclosed10 - 49 employeesIrvine, CABrightQuery is a small Irvine, California-based Funding & Investment company. Their services include Funding & Investment and BI & big data consulting & SI.Read More
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2077Undisclosed10 - 49 employeesSan Diego, CALaunched in 2017, Search Rebel LLC is a software development company. Headquartered in San Diego, California, the team specializes in Custom Software Development and BI & big data consulting & SI.Read More
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2078Undisclosed10 - 49 employeesPalo Alto, CABlockchain company TieSet was launched in 2020. The agency specializes in Blockchain and IT strategy consulting, and is small.Read More
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2079$5,000+50 - 249 employeesSan Diego, CAEinstein Industries is a midsize San Diego, California-based social media marketing firm. Their services include Social Media Marketing and Search Engine Optimization.Read More
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2080Undisclosed50 - 249 employeesLos Angeles, CAPalm Tree LLC is a Business Consulting company. The team offers Business Consulting and Commercial Financing and is based in Los Angeles, California.Read More
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2081Undisclosed50 - 249 employeesSunnyvale, CABased in Sunnyvale, California, TRUEXTEND, Inc. Is a custom software development firm. The team offers Custom Software Development and Web Development.Read More
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2082Undisclosed50 - 249 employeesSanta Clara, CAStage 4 Solutions is a Business Consulting company founded in 2001. The company provides Business Consulting and Marketing Strategy, and is midsize.Read More
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2083$10,000+50 - 249 employeesSanta Clara, CAMSBC Group is a software development company established in 2002. The team provides Custom Software Development and IT strategy consulting.Read More
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2084$5,000+50 - 249 employeesLos Angeles, CARead More
Sumeru Inc is a full-service technology consultancy based in Los Angeles with more than 50 employees. Founded in 2002, they are experts in IT staff augmentation, web design, and social media marketing solutions for clients in the industries of financial services and nonprofit.
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GAPIndustries
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2085$25,000+250 - 999 employeesSan Francisco, CAPythian is a business intelligence company in Ottawa, Canada and San Francisco, California. They specialize in BI & big data consulting & SI and cloud consulting & SI and were launched in 1997.Read More
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Fox SportsIndustries
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2086$1,000+10 - 49 employeesSan Jose, CACustom software development firm AloneClone was established in 2019. The team specializes in Custom Software Development and Artificial Intelligence.Read More
Clients
Epic GamesIndustries
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2087Undisclosed50 - 249 employeesRoseville, CANaviant Inc. Is an ECM consulting and SI and Business Consulting company. The Verona, Wisconsin-based agency was founded in 1986. Their team provides ECM consulting and SI and Business Consulting.Read More
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2088$1,000+250 - 999 employeesAnaheim, CAIT Solutions is a midsize IT managed services company located in Fort Washington, Pennsylvania and Syosset, New York. Their services include IT managed services and Cybersecurity.Read More
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2089$50,000+50 - 249 employeesRedondo Beach, CALimestone Digital is a midsize Karlín, Czech Republic-based IT strategy consulting company. They specialize in IT strategy consulting, Web Development, IT staff augmentation, Custom Software Development, and more and were launched in 2016.Read More
Clients
Terravate LLCIndustries
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2090$5,000+250 - 999 employeesSanta Monica, CABSS Commerce is an e-commerce development company established in 2012. Their midsize team is headquartered in Hanoi, Vietnam; Santa Monica, California; London, England and Singapore, Singapore. The company offers E-Commerce Development, Mobile App Development, IT strategy consulting, Web Design, and more.Read More
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2091Undisclosed50 - 249 employeesFremont, CASPIN Strategy is an Email Marketing company established in 2014. The company focuses on Email Marketing and Pay Per Click, and is midsize.Read More
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2092$25,000+50 - 249 employeesRedwood City, CASoftware development firm Intelygenz is headquartered in Madrid, Spain and Redwood City, California. The team offers Custom Software Development and Artificial Intelligence.Read More
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2093Undisclosed10 - 49 employeesPalo Alto, CAFounded in 2021, Insight Terra is a small big data analytics company. Their services include BI & big data consulting & SI and cloud consulting & SI.Read More
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2094Undisclosed50 - 249 employeesSan Jose, CADigital Strategy company Catalyst Business Partners was established in 2002. The firm specializes in Digital Strategy and cloud consulting & SI, and is midsize.Read More
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2095$50,000+250 - 999 employeesSeattle, WALocated in Tallinn, Estonia; Kharkiv, Ukraine; Stuttgart, Germany and London, England, Jelvix is a software development company. The midsize agency was established in 2011. Their services include Custom Software Development, Mobile App Development, Artificial Intelligence, and cloud consulting & SI.Read More
Clients
Tiber Capital GroupIndustries
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2096Undisclosed250 - 999 employeesSan Diego, CAIn Huntsville, Alabama and North Charleston, South Carolina, Sentar Inc. Is a Cybersecurity and IT managed services company. They offer Cybersecurity and IT managed services.Read More
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2097Undisclosed50 - 249 employeesSan Jose, CAMumba Technologies is an IT strategy consulting company. Launched in 2010, the team offers IT strategy consulting and BI & big data consulting & SI.Read More
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2098$1,000+50 - 249 employeesSan Francisco, CABased in San Francisco, California, Karma Infotech is a midsize Back Office Outsourcing company. Their services include Back Office Outsourcing and Custom Software Development.Read More
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2099Undisclosed2 - 9 employeesCarmichael, CAAutomize is a small Carmichael, California-based Digital Strategy company. Their services include Digital Strategy and Other Application Development.Read More
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2100$5,000+Freelancer employeesBeverly Hills, CASnohat is a Marketing Strategy company. The team specializes in Marketing Strategy and Social Media Marketing and is based in Beverly Hills, California.Read More
Industries
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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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