Top 100 IT Services Companies in California
The Best of June 2026Looking 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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2311$10,000+1,000 - 9,999 employeesEl Dorado Hills, CAFounded in 1993, R Systems is a large big data analytics company. Their services include BI & big data consulting & SI and Back Office Outsourcing.Read More
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2312$5,000+10 - 49 employeesSan Jose, CACRM consulting and SI company Clone-Tech is in San Jose, California and Nairobi, Kenya. They focus on CRM consulting and SI and ERP consulting and SI and were founded in 2022.Read More
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2313$10,000+1,000 - 9,999 employeesManhattan Beach, CARapid7 is a Cybersecurity company. Their large team is in Boston, Massachusetts and Manhattan Beach, California. Their services include Cybersecurity and IT managed services.Read More
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2314$5,000+50 - 249 employeesSan Francisco, CAGITS Indonesia is a midsize cloud consulting & SI company. Based in Bandung, Indonesia, the firm was founded in 2010. Their team focuses on cloud consulting & SI, mobile app development, custom software development, and web development.Read More
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2315$25,000+50 - 249 employeesLos Angeles, CAUniqcli, a Marketing Strategy company, was launched in 2017. They are headquartered in Chicago, Illinois; Los Angeles, California; Philadelphia, Pennsylvania and Raleigh, North Carolina and have a midsize team. Uniqcli focuses on Marketing Strategy, cloud consulting & SI, Low/No Code Development, IT strategy consulting, and more.Read More
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SootheIndustries
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2316$10,000+50 - 249 employeesTracy, CATravancore Analytics is a Tracy, California-based artificial intelligence company. They offer Artificial Intelligence, cloud consulting & SI, Custom Software Development, Generative AI, and more and were founded in 2007.Read More
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2317Undisclosed10 - 49 employeesLos Angeles, CABoston Networks, an IT strategy consulting company, is headquartered in Boston, Massachusetts and Stoneham, Massachusetts. Their services include IT strategy consulting and cloud consulting & SI.Read More
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2318Undisclosed10 - 49 employeesCorona, CANetsity is a business intelligence company located in Corona, California and Ghaziabad, India. They specialize in BI & big data consulting & SI and Artificial Intelligence.Read More
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2319Undisclosed10,000+ employeesLos Angeles, CABDO is an ERP consulting and SI company. Their large team is located in Chicago, Illinois and Huntsville, Alabama. Their services include ERP consulting and SI and Cybersecurity.Read More
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2320Undisclosed50 - 249 employeesFremont, CAPETADATA is a software development company. They are in Fremont, California and Hyderabad, India and have midsize team. They offer Custom Software Development and Back Office Outsourcing.Read More
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2321$5,000+1,000 - 9,999 employeesLos Gatos, CAInfogain is a cloud consulting & SI company. Launched in 1990, the agency is in Los Gatos, California and Noida, India. Their services include cloud consulting & SI and BI & big data consulting & SI.Read More
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2322Undisclosed10 - 49 employeesLaguna Beach, CADevBird is a small Laguna Beach, California-based graphic design company. Their services include Graphic Design and cloud consulting & SI.Read More
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2323Undisclosed10 - 49 employeesSan Francisco, CAButtered Toast, a Market Research company, is located in San Francisco, California. Established in 2016, the team provides Market Research and Marketing Strategy.Read More
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2324Undisclosed10 - 49 employeesLaguna Hills, CANeilson Marketing Services, an Email Marketing company, is headquartered in Laguna Hills, California. Their services include Email Marketing and Search Engine Optimization.Read More
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2325UndisclosedFreelancer employeesSan Francisco, CADr. Dede Tetsubayashi Consulting is a Market Research company. Their small team of employees is based in San Francisco, California. Their team offers Market Research and Corporate Training & Coaching.Read More
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2326$25,000+50 - 249 employeesSan Francisco, CASmartCat is an AI development company. The midsize team is based in Novi Sad, Serbia and San Francisco, California. Their services include Artificial Intelligence, Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, and more.Read More
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2327$1,000+10 - 49 employeesLaguna Beach, CABlack Core SP.Zo.o.S.k is a small Gdynia, Poland-based big data analytics company. Their services include BI & big data consulting & SI and Digital Strategy.Read More
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2328$10,000+50 - 249 employeesWestlake Village, CABusiness intelligence company Agilisium is located in Westlake Village, California and Chennai, India. The team provides BI & big data consulting & SI and cloud consulting & SI.Read More
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2329$10,000+250 - 999 employeesWest Hollywood, CALaunched in 2003, Herjavec Group is an IT managed services company. The team provides IT managed services and Cybersecurity.Read More
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2330$5,000+10,000+ employeesIrvine, CARead More
Randstad Technologies is an IT staff augmentation firm based in Irvine, Calif. Founded in 1960, their team of over 10,000 serves clients in the IT, finance, and healthcare sectors. Services include IT strategy consulting and IT managed services.
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2331$25,000+50 - 249 employeesLos Angeles, CABookmark Content and Communications, a Content Marketing company, is based in Holborn, England and Toronto, Canada. They offer Content Marketing and CRM consulting and SI and were launched in 1986.Read More
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2332Undisclosed250 - 999 employeesSanta Clara, CACRM consulting and SI and Customer Service Outsourcing company AST LLC was launched in 1995. The firm specializes in CRM consulting and SI and Customer Service Outsourcing, and is midsize.Read More
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2333$5,000+250 - 999 employeesSan Diego, CAAHT Tech is a custom software development firm based in Hanoi, Vietnam; Shibuya, Japan; Thành phố Hồ Chí Minh, Vietnam and Zetland, Australia. The company specializes in Custom Software Development, E-Commerce Development, Artificial Intelligence, AI Agents, and more and has a midsize team.The company was founded in 2007.Read More
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Bamboo Airways SCI Group Emers Group Eureka PhysiocareIndustries
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2334$5,000+1,000 - 9,999 employeesLos Angeles, CALocated in Cranbury, New Jersey; Owings Mills, Maryland; New York, New York and Philadelphia, Pennsylvania, Integris is an IT managed services company. They specialize in IT managed services, IT strategy consulting, Cybersecurity, and AI Agents and were launched in 1997.Read More
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Fitness & WellnessIndustries
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2335$1,000+50 - 249 employeesIrvine, CAHiphen Consulting, a Business Consulting company, is headquartered in Dubai, United Arab Emirates and Bengaluru, India. They offer Business Consulting and Accounting and were established in 2021.Read More
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2336UndisclosedFreelancer employeesBurbank, CAApplication Testing company CyberTest is located in Burbank, California. They provide Application Testing and Cybersecurity.Read More
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2337UndisclosedFreelancer employeesWest Hollywood, CAWe Are Momentus Inc. Is an AI Agents company established in 2025. The small team offers AI Agents and IT strategy consulting.Read More
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2338UndisclosedFreelancer employeesLong Beach, CAEstablished in 2016, STRATEGOK is a small AI Agents company located in Long Beach, California. Their team offers AI Agents and BI & big data consulting & SI.Read More
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2339UndisclosedFreelancer employeesTorrance, CAAIGEN Consulting is an AI Agents company. The firm is headquartered in Torrance, California. Their services include AI Agents and CRM consulting and SI.Read More
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2340Undisclosed250 - 999 employeesSan Mateo, CAMidsize Cybersecurity company Keyfactor , is headquartered in Independence, Ohio and Solna, Sweden. The team offers Cybersecurity and IoT development.Read More
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