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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$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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2101Undisclosed50 - 249 employeesPasadena, CASatwic Inc is an artificial intelligence development company. The team provides Artificial Intelligence and Robotics Process Automation, and the firm is located in Pasadena, California.Read More
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2102Undisclosed50 - 249 employeesSanta Clara, CAPentaho is a big data analytics company. The firm is located in Orlando, Florida and Santa Clara, California. Their team focuses on BI & big data consulting & SI.Read More
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2103Undisclosed10 - 49 employeesElk Grove, CASyTech Solutions, a software development firm, is based in Elk Grove, California. The team provides Custom Software Development and IT managed services.Read More
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2104Undisclosed2 - 9 employeesLong Beach, CABit Lagoon is a software development firm established in 2014. Their services include Custom Software Development and IT managed services.Read More
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2105Undisclosed2 - 9 employeesHawthorne, CATACTIC CONSULTING is an Accounting company. They are based in Hawthorne, California and have small team. Their team provides Accounting and IT managed services.Read More
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2106Undisclosed2 - 9 employeesSimi Valley, CASJO Consulting Group is an IT managed services company. Their small team is headquartered in Simi Valley, California. Their services include IT managed services and Search Engine Optimization.Read More
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2107Undisclosed2 - 9 employeesPleasanton, CALaunched in 2010, International B2B Solutions Inc is a cloud consulting & SI company. The small team provides cloud consulting & SI and Content Marketing.Read More
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2108Undisclosed2 - 9 employeesAlameda, CAAlliance 4 Data, an Email Marketing company, was launched in 2017. The small team offers Email Marketing and BI & big data consulting & SI.Read More
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2109Undisclosed2 - 9 employeesRancho Mirage, CAWebtechno.com is a Rancho Mirage, California-based Email Marketing company. Established in 2012, the team provides Email Marketing and BI & big data consulting & SI.Read More
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2110$10,000+2 - 9 employeesSan Francisco, CAFinancial Consulting company Lineal CPA was established in 2010. The small team focuses on Financial Consulting and Fractional CFO Services.Read More
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2111$10,000+50 - 249 employeesSan Jose, CARead More
Zone24x7 Inc. is a software and tech company based in San Jose, Calif. Founded in 2003, their team of over 50 experts provides IoT development, custom software development, and cloud consulting services for clients ranging from small startups to large corporations.
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2112$5,000+50 - 249 employeesLos Angeles, CAMediaLink, a midsize Marketing Strategy company, is based in New York, New York and Los Angeles, California. Their services include Marketing Strategy and BI & big data consulting & SI.Read More
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2113$5,000+10 - 49 employeesSan Jose, CASocial media marketing agency Jway Group was launched in 1994. The team provides Social Media Marketing and Content Marketing.Read More
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2114Undisclosed10 - 49 employeesSan Diego, CALaunched in 2013, Golden Seller is a small branding firm. Their services include Branding and Digital Strategy.Read More
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2115Undisclosed10 - 49 employeesSan Mateo, CAEstablished in 2010, Hi Dev is a software development company. The team specializes in Custom Software Development and Web Development.Read More
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2116$5,000+10 - 49 employeesSan Ramon, CARead More
Jack Frost Design, a cloud consulting & SI company, was launched in 1968. They are in San Ramon, California and Rocklin, California and have a small team. Their services include cloud consulting & SI, web development, e-commerce development, and corporate training & coaching.
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2117Undisclosed10 - 49 employeesOrange, CA360 Circuits, a public relations agency, is located in Orange, California. Established in 2004, the team provides Public Relations and Marketing Strategy.Read More
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2118Undisclosed10 - 49 employeesLong Beach, CALaunched in 2020, Upmax Digital Marketing Agency is a small Long Beach, California-based social media marketing firm. Their team specializes in Social Media Marketing and Conversion Optimization.Read More
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2119Undisclosed10 - 49 employeesSanta Monica, CALos Angeles WordPress Development is a web design company. Located in Santa Monica, California, the team focuses on Web Design and Search Engine Optimization.Read More
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2120Undisclosed10 - 49 employeesPleasanton, CALaunched in 2009, VendCentral Marketing is a web design agency. The team offers Web Design and Advertising and is in Pleasanton, California.Read More
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2121Undisclosed10 - 49 employeesBeverly Hills, CAGamble Guy Productions is a Marketing Strategy company established in 2018. The team specializes in Marketing Strategy and Social Media Marketing.Read More
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2122Undisclosed50 - 249 employeesSan Diego, CABilligence is a Chatswood, Australia-based business intelligence company. Their services include BI & big data consulting & SI and cloud consulting & SI.Read More
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2123$25,000+10 - 49 employeesSan Jose, CASmall web design agency Lunar Web Solution Technologies Private Limited, is in Noida, India. Their services include Web Design and UX/UI Design.Read More
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2124Undisclosed2 - 9 employeesSan Jose, CAPENSEMOS S.A. Is a small Bogotá, Colombia-based ERP consulting and SI and custom software development firm. The team specializes in ERP consulting and SI and Custom Software Development.Read More
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2125Undisclosed50 - 249 employeesSan Ramon, CADataPattern, a cloud consulting & SI company, was established in 2019. The agency offers cloud consulting & SI and Cybersecurity.Read More
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2126$5,000+50 - 249 employeesDublin, CAPipra Solutions is a cloud consulting & SI company. They were established in 2017, and their services include cloud consulting & SI and Mobile App Development.Read More
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2127$5,000+250 - 999 employeesMilpitas, CAChirpn IT Solutions, an IT staff augmentation company, was launched in 2016. Their midsize team is based in Milpitas, California; Girraween, Australia and Pune, India. The company provides IT staff augmentation, custom software development, web design, enterprise app modernization, and more.Read More
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2128Undisclosed50 - 249 employeesPalo Alto, CACyCognito is a midsize Cybersecurity company established in 2017. Their team focuses on Cybersecurity.Read More
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2129$10,000+250 - 999 employeesSanta Clara, CAWinWire Technologies is an user experience company. Their midsize team is based in Santa Clara, California and Hyderabad, India. Their services include UX/UI Design and cloud consulting & SI.Read More
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2130$10,000+10 - 49 employeesLos Angeles, CAHeadquartered in Wyong, Australia and Los Angeles, California, TALK Agency is a Digital Strategy company. They specialize in Digital Strategy and Social Media Marketing.Read More
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