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.
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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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2251Undisclosed2 - 9 employeesStockton, CASEO agency Fantastic Services provides Search Engine Optimization and UX/UI Design. They are located in Stockton, California.Read More
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2252Undisclosed2 - 9 employeesSan Diego, CAIn San Diego, California, GDPR Solutions, Inc. Is a small Compliance Consulting company. The team specializes in Compliance Consulting and IT strategy consulting.Read More
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2253Undisclosed2 - 9 employeesIrvine, CAMethod Data Science is a small business intelligence company. They specialize in BI & big data consulting & SI and Web Development and were launched in 2018.Read More
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2254Undisclosed2 - 9 employeesIrvine, CAEmarcom is a social media marketing firm. They were founded in 1998 and focus on Social Media Marketing and Content Marketing.Read More
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2255Undisclosed2 - 9 employeesPalo Alto, CAPurgo AI is an Application Testing company headquartered in Palo Alto, California. They focus on Application Testing and cloud consulting & SI.Read More
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2256Undisclosed2 - 9 employeesCameron Park, CAFounded in 2015, ICM Solutions is an Application Testing company. The small team specializes in Application Testing and IT strategy consulting.Read More
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2257Undisclosed2 - 9 employeesSunnyvale, CAEstablished in 2006, AppLite.com is a SEO company. The agency specializes in Search Engine Optimization and BI & big data consulting & SI, and is small.Read More
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2258Undisclosed2 - 9 employeesSan Francisco, CAMachZho is an Affiliate Marketing company. Based in San Francisco, California, their small team offers Affiliate Marketing and Content Marketing. The agency was launched in 2019.Read More
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2259Undisclosed2 - 9 employeesGlendale, CAAdWaken.ai is a Glendale, California-based branding firm. They offer Branding and Social Media Marketing and were established in 2024.Read More
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2260Undisclosed2 - 9 employeesLos Angeles, CASeena AI is an AI Consulting company. They are located in Los Angeles, California, and their services include AI Consulting and BI & big data consulting & SI.Read More
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2261Undisclosed2 - 9 employeesSan Mateo, CABay Area Web Solutions, a SEO agency, specializes in Search Engine Optimization and Web Design. The company is based in San Mateo, California.Read More
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2262Undisclosed2 - 9 employeesSan Jose, CATykio. Is a PR agency. The small San Jose, California-based team focuses on Public Relations and Digital Strategy. The firm was established in 2018.Read More
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2263$5,000+10 - 49 employeesWalnut, CAEstablished in 2020, TYNYBAY Inc is a small cloud consulting & SI company. Their team specializes in cloud consulting & SI and IT managed services.Read More
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2264Undisclosed10 - 49 employeesSan Francisco, CALocated in Reading, United Kingdom and San Francisco, California, CRMT Digitlal is a digital strategy company. The small agency was launched in 1999. Their team specializes in digital strategy, CRM consulting and SI, other IT consulting and SI, email marketing, and more.Read More
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2265Undisclosed50 - 249 employeesHayward, CAValueLinked, Corp. Is a social media marketing agency. They were established in 2012, and their services include Social Media Marketing and Business Consulting.Read More
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2266$5,000+50 - 249 employeesSanta Clara, CARead More
A product engineering services company located in Indore, Madhya Pradesh, India, 47Billion works frequently with small businesses, middle-market companies, and enterprises. The company focuses on industries such as information technology, advertising, gaming, and consumer products and has 76 employees. Established in 2014, 47Billion specializes in BI & Big Data consulting, UX/UI design, mobile app development, and cloud consulting.
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CiscoIndustries
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2267$25,000+50 - 249 employeesSanta Monica, CAHeadquartered in Santa Monica, California; Zaporizhzhia, Ukraine and Kyiv, Ukraine, IT-Dimension Inc. Is a web development company. The midsize team offers Web Development, Mobile App Development, UX/UI Design, Application Testing, and more and was founded in 2007.Read More
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2268Undisclosed50 - 249 employeesLos Angeles, CAStoneTurn is a Business Consulting company. Their team is based in Boston, Massachusetts and New York, New York and offers Business Consulting and Cybersecurity.Read More
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2269$10,000+250 - 999 employeesSan Francisco, CAGeekyAnts is a Bengaluru, India-based custom software development firm. The midsize team provides Custom Software Development, Mobile App Development, Web Development, Artificial Intelligence, and more. The firm was launched in 2006.Read More
Clients
Siveco Romania Olive Garden Darden KhataBookIndustries
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2270$1,000+10 - 49 employeesLos Angeles, CAManagement Technology Consulting is a CRM consulting and SI company. They were established in 2000, and their services include CRM consulting and SI.Read More
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2271Undisclosed10 - 49 employeesMilpitas, CAFindMeTechie is a custom software development firm launched in 2014. The team offers Custom Software Development and E-Commerce Development.Read More
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2272Undisclosed10 - 49 employeesHonolulu, HITeraVault Software is a Business Consulting company. Their team is based in Honolulu, Hawaii and Cebu City, Philippines and provides Business Consulting and BI & big data consulting & SI.Read More
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2273Undisclosed10 - 49 employeesFremont, CAEncoding Enhancers is a small Fremont, California-based business intelligence company. Their services include BI & big data consulting & SI and Robotics Process Automation.Read More
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2274Undisclosed50 - 249 employeesSouth San Francisco, CACybersecurity company MyData-TRUST is headquartered in Mons, Belgium and Paris, France. The team focuses on Cybersecurity and Compliance Consulting.Read More
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2275$10,000+250 - 999 employeesCarlsbad, CAA3Logics Inc. Is a midsize IT strategy consulting company. Founded in 2003, the firm is located in Carlsbad, California; Jaipur, India and Singapore, Singapore. Their services include IT strategy consulting, Custom Software Development, Mobile App Development, IT managed services, and more.Read More
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AVATAR FloridaIndustries
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2276$10,000+1,000 - 9,999 employeesMenlo Park, CATrantor Inc. Is an app development company launched in 2012. Their large team is located in Menlo Park, California; Chandigarh, India; Vancouver, Canada and Heredia, Costa Rica. Their services include Mobile App Development, Custom Software Development, Web Development, BI & big data consulting & SI, and more.Read More
Clients
GenpactIndustries
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2277Undisclosed50 - 249 employeesSan Francisco, CAUXCam, a Conversion Optimization company, was launched in 2014. They specializes in Conversion Optimization and UX/UI Design.Read More
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2278$10,000+10 - 49 employeesSan Jose, CAArastu Systems is an IoT development company. The agency is in San Jose, California and Ahmedabad, India. Their team provides IoT development and Enterprise App Modernization.Read More
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2279Undisclosed10 - 49 employeesSan Francisco, CAThe ID Co., a software development company, was launched in 2010. The small team focuses on Custom Software Development and IT managed services.Read More
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2280Undisclosed50 - 249 employeesSan Francisco, CAUniform Systems, Inc. Is a CRM consulting and SI company. Based in San Francisco, California and Berlin, Germany, their team focuses on CRM consulting and SI and Custom Software Development.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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