Top 100 IT Services Companies in California
The Best of September 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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1471Undisclosed50 - 249 employeesPleasanton, CATechbee Solutions is an IT strategy consulting company established in 2018. Their team focuses on IT strategy consulting and IT managed services.Read More
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1472Undisclosed50 - 249 employeesSanta Clara, CAMarrina Decisions is a Santa Clara, California-based CRM consulting and SI company. They specialize in CRM consulting and SI and Email Marketing and were founded in 2013.Read More
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1473Undisclosed50 - 249 employeesSan Francisco, CASpiceOrb is a big data company. Their midsize team is based in San Francisco, California. Their services include BI & big data consulting & SI and Cybersecurity.Read More
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1474Undisclosed50 - 249 employeesDublin, CABased in Dublin, California, Onemind Services LLC is a midsize cloud consulting & SI company. The team focuses on cloud consulting & SI and IoT development.Read More
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1475Undisclosed50 - 249 employeesSan Diego, CAS-Square Systems, Inc, a cloud consulting & SI company, offer cloud consulting & SI and IT managed services. They were founded in 2002.Read More
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1476$1,000+2 - 9 employeesSan Francisco, CARead More
Web development company Zona Digital is located in L'viv, Ukraine. They specialize in web development, web design, ux/ui design, graphic design, and more and were launched in 2010.
Clients
Mental Health: Global Challenges of XXI CenturyIndustries
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1477$1,000+10 - 49 employeesSacramento, CARysysth Technologies is a Sacramento, California-based cloud consulting & SI company. The small firm was launched in 2022. Their team offers cloud consulting & SI, Web Development, Mobile App Development, Artificial Intelligence, and more.Read More
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1478$1,000+10 - 49 employeesBurbank, CAKanusoft LLC. Is a Digital Strategy company. Their small team is located in Burbank, California. Their services include Digital Strategy, Graphic Design, cloud consulting & SI, Web Development, and more. The agency was established in 2013.Read More
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1479$5,000+10 - 49 employeesFremont, CATOPSYNTAX INC, a software development firm, is in Fremont, California. They specialize in Custom Software Development and Enterprise App Modernization and were founded in 2018.Read More
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1480$10,000+10 - 49 employeesOakland, CAHuman Decode is a web development company. They are headquartered in Oakland, California and have small team. They provide Web Development and IT staff augmentation.Read More
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1481Undisclosed10 - 49 employeesTorrance, CAOffsoar, a big data company, was founded in 2012. The team specializes in BI & big data consulting & SI and Web Development.Read More
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1482Undisclosed10 - 49 employeesMountain View, CAIvector is a Mountain View, California-based custom software development company. They offer Custom Software Development and Artificial Intelligence and were launched in 2022.Read More
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1483Undisclosed10 - 49 employeesSan Francisco, CACodeCones is a cloud consulting & SI company. Based in San Francisco, California, the company offers cloud consulting & SI and Custom Software Development.Read More
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1484$1,000+10 - 49 employeesCosta Mesa, CAAI development company OpenDrawing focuses on Artificial Intelligence and Data Annotation Services. They were established in 2024.Read More
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1485$50,000+50 - 249 employeesLos Angeles, CAIT staff augmentation company Elaniin was established in 2014. In Los Angeles, California; San Salvador, El Salvador and Ciudad de México, Mexico, their midsize team offers IT staff augmentation, Custom Software Development, Web Design, Mobile App Development, and more.Read More
Clients
Jostens PapaJohns The Northface 4MCIndustries
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1486$10,000+50 - 249 employeesWalnut Creek, CAIn Walnut Creek, California and Bainbridge Island, Washington, Spear Marketing Group is an Email Marketing company. The team specializes in Email Marketing and CRM consulting and SI.Read More
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1487$10,000+10 - 49 employeesLos Angeles, CAEstablished in 2022, Synthax Codes is a website development company. Their small team is headquartered in Chișinău, Moldova; Los Angeles, California and Florence, Kentucky and offers Web Development, Artificial Intelligence, and IT managed services.Read More
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1488$5,000+2 - 9 employeesSanta Ana, CAZetatek LLC, a small web development company, is based in Santa Ana, California and Manila, Philippines. The team specializes in Web Development and Mobile App Development.Read More
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1489$5,000+2 - 9 employeesLos Angeles, CASC Tech is a web design company. Headquartered in Los Angeles, California, the team offers Web Design and Web Development.Read More
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1490$10,000+2 - 9 employeesSan Francisco, CAIntactic is a branding company. The team focuses on Branding and Other Marketing, and the agency is headquartered in San Francisco, California.Read More
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1491$5,000+2 - 9 employeesSacramento, CAMindbox Studios is a small Business Consulting company. Founded in 2006, the team focuses on Business Consulting and Web Development.Read More
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1492Undisclosed10,000+ employeesSan Francisco, CAFounded in 1993, Thoughtworks Software Technologies Ltd is a large Chicago, Illinois-based AI company. Their team offers Artificial Intelligence and IT managed services.Read More
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1493Undisclosed10 - 49 employeesClovis, CAASN Software, a custom software development company, is headquartered in Clovis, California and Oakland, California. They offer Custom Software Development and Web Design.Read More
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1494Undisclosed2 - 9 employeesPico Rivera, CASharpdots is a Commercial Printing company launched in 2000. The team provides Commercial Printing and Direct Marketing and is based in Pico Rivera, California.Read More
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1495Undisclosed50 - 249 employeesSan Francisco, CAPresence is a Digital Strategy company launched in 2012. Their team provides Digital Strategy and Custom Software Development.Read More
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1496$10,000+10 - 49 employeesSan Francisco, CATheBlockBox is a Blockchain company founded in 2018. Their team provides Blockchain and Custom Software Development.Read More
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1497$10,000+2 - 9 employeesIrvine, CANovizant is a cloud consulting & SI company. Their team is in Irvine, California and specializes in cloud consulting & SI and IoT development.Read More
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1498$5,000+2 - 9 employeesTemecula, CACRM consulting and SI company Digital Brand Power is located in Temecula, California and Atlanta, Georgia. They offer CRM consulting and SI and Conversion Optimization and were founded in 2018.Read More
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1499$5,000+2 - 9 employeesLos Angeles, CAIn Los Angeles, California, Sogos Consulting is a Business Consulting company. They focus on Business Consulting and IT strategy consulting.Read More
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1500Undisclosed2 - 9 employeesLivermore, CAAvidZenith LLC, a software development company, provides Custom Software Development and API Development. The company is headquartered in Lynden, Washington and Livermore, California.Read More
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Check out an IT Services Company in California with the most new reviews in the past 12 months.
Most Reviewed
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