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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241Undisclosed2 - 9 employeesLake Forest, CARead More
SQL Solutions Group is an IT strategy consulting company. The Lake Forest, California-based firm was launched in 2010. The small team focuses on IT strategy consulting, BI & big data consulting & SI, IT managed services, and custom software development.
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242Undisclosed1,000 - 9,999 employeesCampbell, CARead More
Based in Campbell, California, Barracuda is a large cloud consulting & SI company. The team specializes in cloud consulting & SI, cybersecurity, other IT consulting and SI, and application management & support.
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243Undisclosed50 - 249 employeesEl Segundo, CAVeganext is a Cybersecurity company founded in 2017. The midsize team focuses on Cybersecurity and IT managed services.Read More
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244Undisclosed10 - 49 employeesLos Angeles, CAAI firm and business intelligence company IV.AI is located in Los Angeles, California. Founded in 2016, the team focuses on Artificial Intelligence and BI & big data consulting & SI.Read More
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245$100,000+2 - 9 employeesSacramento, CAPragmint is a big data company. Located in Sacramento, California, their small team offers BI & big data consulting & SI, Custom Software Development, Enterprise App Modernization, IT strategy consulting, and more. The firm was founded in 2021.Read More
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246Undisclosed10 - 49 employeesIrvine, CABig data company Xelleration LLC is in Irvine, California. Launched in 2001, the team provides BI & big data consulting & SI and cloud consulting & SI.Read More
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247Undisclosed10,000+ employeesSan Jose, CARead More
FLEX, a large product design company, is located in Singapore, Singapore and San Jose, California. Established in 1969, the team provides product design, other design, and logistics & supply chain consulting.
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248Undisclosed10 - 49 employeesLos Angeles, CAMargasoft is a small Los Angeles, California-based Litigation Support Services company. They specialize in Litigation Support Services, Custom Software Development, Artificial Intelligence, IT managed services, and more and were established in 2005.Read More
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Johnson & JohnsonIndustries
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249$1,000+2 - 9 employeesCorona, CALocated in Corona, California, WellomyTech is an IT managed services company. They offer IT managed services, Artificial Intelligence, custom software development, enterprise app modernization, and more and were established in 2021.Read More
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250$1,000+10 - 49 employeesSimi Valley, CAITS - Integrated Telemanagement Services, Inc. Is an IT managed services company. They focus on IT managed services and other IT consulting and SI and were established in 1990.Read More
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251$1,000+10 - 49 employeesPetaluma, CATheCodery is a CRM consulting and SI company. They are located in Petaluma, California, and their services include CRM consulting and SI and Custom Software Development.Read More
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252$5,000+2 - 9 employeesIrvine, CARead More
Formulytic is a demand generation and marketing operations consulting company based in Irvine, Calif. Founded in 2015, the team of 2 specializes in conversion optimization, CRM consulting and SI, and digital strategy.
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VidyardIndustries
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253Undisclosed10 - 49 employeesLaguna Hills, CAInSync Computer Solutions is an IT managed services company. Their team is based in Laguna Hills, California and specializes in IT managed services and IT staff augmentation.Read More
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254$1,000+250 - 999 employeesSan Francisco, CARead More
DataBees is a market research company established in 2017. They are based in San Francisco, California and have a midsize team. The firm offers market research, sales outsourcing, digital strategy, and CRM consulting and SI.
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255$1,000+10 - 49 employeesSan Diego, CASkyriver IT is an IT managed services company. Founded in 2010, their team provides IT managed services and Cybersecurity.Read More
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256$5,000+10 - 49 employeesSan Diego, CARead More
Nisman Solutions is a software and product development company founded in 2007 and located in San Diego, Calif. With a team of about 25 employees, they serve small and midmarket businesses in the business services, health care and medical, IT, telecommunications, and e-commerce industries. Their services include software development, mobile app development, and IT strategy consulting.
Clients
Phone2Industries
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257$1,000+10 - 49 employeesAlbany, CAArcSource - IT & Cybersecurity Services is a small Albany, California-based IT managed services company. Their services include IT managed services and Cybersecurity.Read More
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258Undisclosed2 - 9 employeesSan Ramon, CABlackhawk MSP is an IT managed services company launched in 2019. The team provides IT managed services and cloud consulting & SI.Read More
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259$1,000+2 - 9 employeesLos Angeles, CAIT managed services company YesTechie focuses on IT managed services. They are headquartered in Los Angeles, California.Read More
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260$5,000+50 - 249 employeesPleasant Hill, CARead More
Founded in 2015, Epik Solutions is a digital services company based in Pleasant Hill, California. They provide a variety of services including digital strategy, web design, content marketing, SEO, and IT consulting.
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261$25,000+1,000 - 9,999 employeesLos Angeles, CANetsol Technologies Inc. Is a Cybersecurity company. Based in Los Angeles, California and London, England, the team specializes in Cybersecurity and cloud consulting & SI.Read More
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262$10,000+50 - 249 employeesMenlo Park, CAIn Menlo Park, California and Coimbatore, India, Techjays is a midsize cloud consulting & SI company. Established in 2020, the team provides cloud consulting & SI, Custom Software Development, Web Development, Mobile App Development, and more.Read More
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263$1,000+10 - 49 employeesCalabasas, CARead More
IT Support LA is an IT managed service and Hardware as a Service (HaaS) provider based out of Tarzana, Calif. Since 2002, their team of about 15 employees has provided IT managed services to small and medium-sized clients.
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264$1,000+50 - 249 employeesWestlake Village, CAISSQUARED INC is an IT managed services company. The team specializes in IT managed services and cloud consulting & SI, and the company is in Westlake Village, California and Hyderabad, India.Read More
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265$5,000+10 - 49 employeesSan Diego, CARead More
IDerive, a media planning & buying agency, was launched in 2022. Headquartered in San Diego, California, their small team specializes in media planning & buying, digital strategy, content marketing, and BI & big data consulting & SI.
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266$10,000+10 - 49 employeesNewport Beach, CAElevate is a custom software development firm founded in 2017. The agency provides Custom Software Development, cloud consulting & SI, Artificial Intelligence, IT staff augmentation, and more and has a small team.Read More
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267$1,000+10 - 49 employeesSan Francisco, CAOn Time Tech is an IT managed services company founded in 2004. Their team focuses on IT managed services.Read More
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268$1,000+10 - 49 employeesSan Bernardino, CARead More
WordSphere WordPress Development Agency is a software development firm established in 2007. Their small team is headquartered in San Bernardino, California. The company focuses on custom software development, IT managed services, web design, wearable app development, and more.
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269Undisclosed50 - 249 employeesIrvine, CARight Click is an IT managed services company. Located in Irvine, California, the team focuses on IT managed services and IT strategy consulting.Read More
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270$5,000+250 - 999 employeesSan Francisco, CACobalt is a San Francisco, California-based Cybersecurity and Application Testing company. Launched in 2013, the team offers Cybersecurity and Application Testing.Read More
Industries
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