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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181$5,000+2 - 9 employeesWest Hollywood, CACybersecurity company HECVAT Pro is located in West Hollywood, California. They provide cybersecurity and were established in 2021.Read More
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182$10,000+50 - 249 employeesSanta Clara, CARead More
Network Remedy is an IT management and Cloud consulting firm from San Jose, Calif. It was founded in 2001 and now has a team of 9 that offers IT managed services and IT strategy consulting services.
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Silicon Valley Startup Incubator (that has produced several unicorns)Industries
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183$25,000+50 - 249 employeesLos Angeles, CAIntegrated Digital Solutions is a midsize Los Angeles, California-based software development firm. Their services include Custom Software Development and cloud consulting & SI.Read More
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AT&T DirecTV Boeing CiscoIndustries
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184$5,000+50 - 249 employeesGlendora, CAIn Glendora, California, 3Alica is a midsize data analytics company. They offer BI & big data consulting & SI, Custom Software Development, E-Commerce Development, Application Testing, and more and were established in 2010.Read More
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SberbankIndustries
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185$1,000+10 - 49 employeesGlendora, CARead More
Founded in 2005, DLL Technologies is an IT service provider based in Glendora, Calif. Their team of over 10 serves small and midmarket businesses across a range of industries. Additional services include web design.
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186$5,000+2 - 9 employeesInglewood, CACX Collective is a small CRM consulting and SI company. They offer CRM consulting and SI, Business Consulting, Call Center Services, Customer Service Outsourcing, and more and were founded in 2016.Read More
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Thrive CausemeticsIndustries
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187$10,000+10 - 49 employeesLos Angeles, CARead More
Ogun Labs, a small , is located in Santa Monica, California. They provide and were founded in 2019.
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188$10,000+10 - 49 employeesPalo Alto, CARead More
Datorium is a bespoke data solutions company based in Palo Alto, Calif. The company, founded in 2015, has a team of less than ten that provides BI & big data consulting & SI, digital strategy, and AI services to various companies and institutions.
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StarbucksIndustries
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189$5,000+10 - 49 employeesGlendale, CASmall custom software development company Skillian, is headquartered in Yerevan, Armenia and Glendale, California. Launched in 2020, the team specializes in Custom Software Development, cloud consulting & SI, and Web Development.Read More
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190Undisclosed2 - 9 employeesCarlsbad, CARead More
CMIT Solutions of Carlsbad provides IT managed services, cybersecurity, and IT strategy consulting for small businesses in the business services, financial services, and health care industries. Founded in 1996, the Carlsbad, California-based team has about 9 employees.
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Crossing Back to HealthIndustries
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191$10,000+2 - 9 employeesLaguna Niguel, CARead More
Red Spider Security is a small cybersecurity company based in Laguna Niguel, California. The team provides cybersecurity, IT strategy consulting, and IT managed services.
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192$10,000+50 - 249 employeesIrvine, CARead More
Xavor Corporation is a custom software development firm. Founded in 1995, the team offers custom software development, cloud consulting & SI, and web development. Their midsize agency is in Irvine, California and Lahore, Pakistan.
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193$1,000+50 - 249 employeesSan Mateo, CARead More
PEARL ORGANISATION is a midsize custom software development company headquartered in Dehradun, India. Launched in 2011, the team provides custom software development, e-commerce development, web design, application testing, and more.
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194Undisclosed1,000 - 9,999 employeesSan Diego, CARead More
Established in 2012, fusepoint is a Marketing Strategy company. They are in San Diego, California and have a large team. Their services include Marketing Strategy, Media Planning & Buying, Digital Strategy, BI & big data consulting & SI, and more.
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195$5,000+10 - 49 employeesSacramento, CARead More
Konnectryx is a small Sacramento, California-based software development firm. They offer custom software development, CRM consulting and SI, e-commerce development, and cloud consulting & SI and were launched in 2012.
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196$10,000+2 - 9 employeesLos Angeles, CARead More
VargasAndrews is a professional services company in Los Angeles and Brisbane, Australia. Founded in 2016, they have about 8 employees that serve clients in a variety of industries. Services include commercial financing, ERP consulting, and accounting.
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197$25,000+2 - 9 employeesFairfield, CARead More
Ideas Factory US is a custom software development company established in 2014. Based in Fairfield, California, their small team focuses on custom software development, enterprise app modernization, IT strategy consulting, cloud consulting & SI, and more.
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198Undisclosed50 - 249 employeesSanta Monica, CARead More
Nextware Technologies is a development agency based in Santa Monica, Calif., with another office in Valencia, Spain. Since 2006, the agency and its team of fewer than 10 have provided expertise in web, custom software, and mobile app development, web design, UX/UI design, and IT managed services.
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LandorIndustries
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199$5,000+2 - 9 employeesIrvine, CARead More
UNIFAGE, an unified communications consulting & SI company, was established in 2018. Their small team is based in Irvine, California and specializes in unified communications consulting & SI, CRM consulting and SI, web design, video production, and more.
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200$10,000+50 - 249 employeesMountain View, CARead More
Sysvine Technologies is a software engineering service provider founded in 2000. Based in Chennai, India, the team of 100+ specializes in custom software development, cloud consulting & SI, and ERP consulting & SI.
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Peloton Blockchain -
201$10,000+250 - 999 employeesMilpitas, CARead More
Founded in 2014, Teksun Inc. is a product engineering services company. Their team of around 25 employees is based in San Jose, Calif., with an additional office in Ahmedabad, India. They focus on IoT development, product design, and cloud consulting.
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QEPRIndustries
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202Undisclosed10 - 49 employeesCarlsbad, CABased in Carlsbad, California, InterKnowlogy is an AI firm. The small team provides Artificial Intelligence, AI Consulting, AI Agents, Generative AI, and more. The company was launched in 1999.Read More
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203$5,000+10 - 49 employeesSan Diego, CAVideo production agency NANOBOT Group is in San Diego, California and Tallinn, Estonia. The small team provides Video Production, Digital Strategy, Email Marketing, Search Engine Optimization, and more and was established in 2010.Read More
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204$1,000+10 - 49 employeesLaguna Hills, CATop Pick Designs is a Laguna Hills, California-based. The agency offers and is small.The agency was established in 2023.Read More
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205$1,000+50 - 249 employeesLos Angeles, CALaunched in 2013, Differenz Force is a CRM consulting and SI company. Their services include CRM consulting and SI.Read More
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206$1,000+10 - 49 employeesSan Francisco, CALaunched in 1998, Help4Access (Microsoft Access Technical Support) is an IT managed services company. The small San Francisco, California-based team offers IT managed services, unified communications consulting & SI, custom software development, and IT staff augmentation.Read More
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207$10,000+10 - 49 employeesSan Ramon, CARead More
Cloud consulting & SI company Initialyze was established in 2015. The small San Ramon, California-based team offers cloud consulting & SI, web design, ux/ui design, architectural design, and more.
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208$25,000+10 - 49 employeesSan Diego, CARead More
NoMoBo is a San Diego-based software company founded in 2017 with more than 10 members. They specialize in custom software, web, and mobile app development services for small and mid-market firms in industries such as real estate, IT, and utilities.
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HOA MessengerIndustries
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209Undisclosed250 - 999 employeesSan Ramon, CARead More
Five9 is a cloud-based call center software provider. Their team of about 1,000 employees is based in San Ramon, Calif. Services include CRM, ERP, and IT consulting, as well as voice services. They were founded in 2001.
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DebtCleanseIndustries
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210Undisclosed10 - 49 employeesLos Angeles, CARead More
Eachbase is a digital agency that operates out of California. Their main services span branding, SEO, and web development.
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Nino's Pizza AECO Starfish Polo TMSIndustries
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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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