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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1711$25,000+50 - 249 employeesRancho Santa Margarita, CAEstablished in 2016, BayGrape Technology Solutions is an IT strategy consulting company. The team provides IT strategy consulting and Custom Software Development.Read More
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1712$5,000+250 - 999 employeesIrvine, CAFounded in 2011, CrowdStrike is a Cybersecurity company. Their team provides Cybersecurity and IT managed services.Read More
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1713$10,000+10 - 49 employeesLos Angeles, CACapte is an IoT development company. Founded in 2016, the agency offers IoT development and BI & big data consulting & SI.Read More
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Transdev Regionalverkehr Köln GmbH ( RVK for short ) RATPDev KeolisIndustries
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1714$1,000+2 - 9 employeesSan Francisco, CAIT managed services company SuperHero IT Solutions is in San Francisco, California. Their services include IT managed services and Web Design.Read More
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1715$50,000+250 - 999 employeesCamarillo, CARead More
Vizuri is a development and computer software company based in Herndon, Va. They were founded in 1986 and have a team of around 250 employees. Their services include custom software development, IT staff augmentation, and IT strategy consulting.
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AetnaIndustries
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1716$10,000+250 - 999 employeesSan Jose, CARead More
Trajectus, a web design agency, is based in Southfield, Michigan and San Jose, California. They provide web design, e-commerce development, enterprise app modernization, application management & support, and more and were founded in 2015.
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1717Undisclosed1,000 - 9,999 employeesBrea, CAFounded in 2000, Nisum is a large Brea, California-based software development company. Their team specializes in Custom Software Development and E-Commerce Development.Read More
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GapIndustries
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1718Undisclosed250 - 999 employeesSanta Clara, CAERP consulting and SI company Yantra Inc. Is in Santa Clara, California and Toronto, Canada. Founded in 2008, the team specializes in ERP consulting and SI and CRM consulting and SI.Read More
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1719$5,000+Freelancer employeesSanta Cruz, CABusiness intelligence company Andrew Searson Business Intelligence Consulting is in Santa Cruz, California. Their services include BI & big data consulting & SI and cloud consulting & SI.Read More
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TRM Labs -
1720Undisclosed1,000 - 9,999 employeesLos Angeles, CAEmids is a Business Consulting company founded in 1999. Their services include Business Consulting and Generative AI.Read More
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1721$5,000+250 - 999 employeesPalo Alto, CAGainInsights is a big data company and cloud consulting & SI company. They provide BI & big data consulting & SI and cloud consulting & SI and are based in Bengaluru, India and Palo Alto, California.Read More
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1722$5,000+Freelancer employeesPasadena, CABits on Disk, a software development company, is based in Pasadena, California. Their services include Custom Software Development and BI & big data consulting & SI.Read More
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1723Undisclosed2 - 9 employeesWest Covina, CAIMCOR Technologies, a small software development company, is headquartered in West Covina, California. Their services include Custom Software Development and E-Commerce Development.Read More
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1724Undisclosed2 - 9 employeesStockton, CASmall Corporate Photography company Monster Design Studios, is headquartered in Stockton, California. The team focuses on Corporate Photography and IT managed services.Read More
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1725Undisclosed2 - 9 employeesRedondo Beach, CABack Office Outsourcing company Calibrated Solutions, LLC. Is in Redondo Beach, California. Launched in 2007, the team provides Back Office Outsourcing and Call Center Services.Read More
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1726Undisclosed2 - 9 employeesRedwood City, CACrewMachine is a small Redwood City, California-based artificial intelligence firm. Their services include Artificial Intelligence and CRM consulting and SI.Read More
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1727Undisclosed2 - 9 employeesRedwood City, CASafina is a Redwood City, California-based branding agency. They specialize in Branding and Corporate Training & Coaching.Read More
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1728Undisclosed2 - 9 employeesOceanside, CASoftware development firm Expeditionary Technical Solutions, Incorporated is in Oceanside, California. They provide Custom Software Development and Application Management & Support.Read More
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1729Undisclosed2 - 9 employeesPleasant Hill, CARevealio, Inc., a software development firm, was launched in 2016. The team specializes in Custom Software Development and IT managed services and is based in Pleasant Hill, California.Read More
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1730Undisclosed2 - 9 employeesBrisbane, CAMagellan USA is a small Brisbane, California-based IT managed services company. Their services include IT managed services and HR Consulting.Read More
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1731Undisclosed2 - 9 employeesCommerce, CAMinorea is a CRM consulting and SI company. They specialize in CRM consulting and SI and Business Consulting and are based in Commerce, California and Cerritos, California.Read More
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1732Undisclosed2 - 9 employeesSan Juan Capistrano, CALocated in San Juan Capistrano, California, SwiftLead is a small web design company. Their services include Web Design and cloud consulting & SI.Read More
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1733$25,000+250 - 999 employeesPleasanton, CASecureKloud , a cloud consulting & SI company, is in Pleasanton, California and Chennai, India. They provide cloud consulting & SI and BI & big data consulting & SI and were launched in 2006.Read More
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1734Undisclosed50 - 249 employeesSanta Clara, CAThe X Future Inc is a software development company located in Santa Clara, California and Mumbai, India. The team focuses on Custom Software Development and Mobile App Development.Read More
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UnileverIndustries
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1735Undisclosed2 - 9 employeesStockton, CABusiness Shaper Group Corp is a small IT managed services company located in Stockton, California. The team offers IT managed services and Web Design.Read More
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1736$5,000+10 - 49 employeesAnaheim, CASoftUp Agency is an IT strategy consulting company launched in 2023. In Anaheim, California and Amsterdam, Netherlands, the team focuses on IT strategy consulting and Custom Software Development.Read More
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1737$5,000+250 - 999 employeesSan Francisco, CARead More
Zazmic Inc. is a digital agency that is headquartered in San Francisco with an office Dnipro, Ukraine. It was founded in 2014 and has more than 100 employees who specialize in web development, mobile app development, UX/UI design, mobile & app marketing, and email marketing.
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Rakuten Boostr Valassis UpChooseIndustries
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1738$1,000+Freelancer employeesSolana Beach, CALook Licensing is an IT managed services company. Their small team is located in Solana Beach, California. Their services include IT managed services and IT strategy consulting.Read More
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1739Undisclosed250 - 999 employeesPleasanton, CASpringML, Inc., a midsize data analytics company, is located in Pleasanton, California and Ashburn, Virginia. The team focuses on BI & big data consulting & SI and IT managed services.Read More
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1740Undisclosed10 - 49 employeesWest Hollywood, CARead More
SmallGiants is a web development firm in London, United Kingdom. The small firm was founded in 2018. Their team provides web development, ux/ui design, application management & support, advertising, and more.
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