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
-
$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.
Industries
-
$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
Industries
-
1411$10,000+10 - 49 employeesLos Angeles, CASynthax Codes is a small UX design company and web development company. The Anenii Noi, Moldova-based company was established in 2022. Their services include ux/ui design and web development.Read More
Industries
-
1412$5,000+10 - 49 employeesSan Diego, CACampaign Creators is a SEO services firm. The San Diego, California-based team focuses on Search Engine Optimization and Web Design.Read More
Industries
-
1413$5,000+10 - 49 employeesMenlo Park, CABrainrider is a Digital Strategy company. They offer Digital Strategy and Content Marketing and were launched in 2010.Read More
Industries
-
1414Undisclosed10 - 49 employeesSan Jose, CASlingshot Connections is a small Accounting company headquartered in San Jose, California. Their services include Accounting and Staffing.Read More
Industries
-
1415$10,000+50 - 249 employeesLos Angeles, CABased in Los Angeles, California and Auckland, New Zealand, Duco Consultancy is a big data analytics company. They offer BI & big data consulting & SI and ERP consulting and SI.Read More
Industries
-
1416Undisclosed10 - 49 employeesSan Martin, CABased in San Martin, California, Corpory is a media planning and buying company. Established in 2022, the team offers Media Planning & Buying and IT strategy consulting.Read More
Industries
-
1417Undisclosed10 - 49 employeesSan Jose, CATrioSource is a cloud consulting & SI company based in San Jose, California and Los Angeles, California. They specialize in cloud consulting & SI and Custom Software Development.Read More
-
1418$1,000+10 - 49 employeesMountain View, CAD3M IT is a social media marketing agency. They were founded in 2023 and specialize in Social Media Marketing and Search Engine Optimization.Read More
-
1419$10,000+10 - 49 employeesSan Francisco, CASynaptik, a small Cybersecurity company, is headquartered in San Francisco, California. Their services include Cybersecurity and Artificial Intelligence.Read More
-
1420Undisclosed10 - 49 employeesLong Beach, CAWeb development company Bit Tech Solutions was established in 2000. Headquartered in Long Beach, California, the team offers Web Development and cloud consulting & SI.Read More
-
1421$5,000+10 - 49 employeesFremont, CAReliova is a cloud consulting & SI company. The team specializes in cloud consulting & SI and Custom Software Development, and the company is located in Fremont, California.Read More
-
1422$10,000+10 - 49 employeesTustin, CAUser experience design agency Prizmstack was launched in 2019. The team offers UX/UI Design and IT strategy consulting and is in Tustin, California.Read More
Industries
-
1423$50,000+10 - 49 employeesCarlsbad, CABig Data Rhino is an artificial intelligence firm. The Carlsbad, California-based company specializes in Artificial Intelligence and AI Agents.Read More
-
1424$1,000+10 - 49 employeesSan Diego, CAFounded in 2018, Vander Media Group is an Advertising company. Their services include Advertising and Social Media Marketing.Read More
-
1425Undisclosed10 - 49 employeesSan Francisco, CASoftAvail, Inc., a small software development company, is located in San Francisco, California and Sofia City, Bulgaria. The team focuses on Custom Software Development and Mobile App Development.Read More
-
1426$5,000+10 - 49 employeesRocklin, CALOJO Marketing is an e-commerce development firm. Based in Rocklin, California, the team specializes in E-Commerce Development and Web Design.Read More
-
1427$5,000+10 - 49 employeesWest Hollywood, CARead More
Retail Reinvented is a Los Angeles-based e-commerce management consulting firm founded in 2010 with fewer than 10 members. They specialize in marketing strategy, digital strategy, and web development for small and mid-market firms in the field of e-commerce.
Clients
French Market LanternsIndustries
-
1428Undisclosed10 - 49 employeesLos Angeles, CARead More
QualityWorks Consulting Group is a software development company headquartered in Los Angeles with an office in Jamaica. Founded in 2010, the team of 28 specializes in application testing, other IT consulting and SI, and application management and support. They work mainly with small businesses, focusing on financial services, healthcare and medical, and telecommunications.
Clients
dpdIndustries
-
1429$1,000+50 - 249 employeesIrvine, CADemandBlue is a CRM consulting and SI company in Irvine, California and India. Launched in 2018, the team specializes in CRM consulting and SI.Read More
Industries
-
1430$5,000+50 - 249 employeesLos Altos, CAFounded in 2011, Brown Deck Innovations is a software development firm. The team specializes in Custom Software Development and Mobile App Development and is located in Los Altos, California.Read More
-
1431Undisclosed2 - 9 employeesAlameda, CASmall big data company and Staffing company DNAK Holdings, is headquartered in Alameda, California. Their services include BI & big data consulting & SI and Staffing.Read More
-
1432Undisclosed2 - 9 employeesAlhambra, CAEstablished in 2014, Cascadia Capital Corporations is an IT managed services company. The team specializes in IT managed services and Business Consulting.Read More
-
1433Undisclosed2 - 9 employeesRedding, CAObsidian IT is a small Back Office Outsourcing company based in Redding, California. Their services include Back Office Outsourcing and cloud consulting & SI.Read More
-
1434Undisclosed2 - 9 employeesLivermore, CAWoll2Woll Software is an IT managed services and mobile app development company launched in 1995. The firm focuses on IT managed services and Mobile App Development.Read More
-
1435Undisclosed2 - 9 employeesLivermore, CATri-Valley Internet is an IT managed services company founded in 1995. The company provides IT managed services and IT strategy consulting, and is small.Read More
-
1436Undisclosed2 - 9 employeesThousand Oaks, CASmall IT managed services and Business Consulting company J&S Advanced I.T., is in Thousand Oaks, California and Simi Valley, California. The team offers IT managed services and Business Consulting.Read More
-
1437Undisclosed2 - 9 employeesMarina del Rey, CASmall AR/VR development and business intelligence company BadVR, Inc., is in Marina del Rey, California. The team provides AR/VR development and BI & big data consulting & SI.Read More
-
1438Undisclosed2 - 9 employeesDixon, CAFounded in 2014, Veteran Technologies LLC is a small Dixon, California-based Corporate Training & Coaching company. Their services include Corporate Training & Coaching and IT strategy consulting.Read More
-
1439Undisclosed2 - 9 employeesMcClellan Park, CAEstablished in 2000, Granite Data Solutions is an IT managed services company. The small team offers IT managed services and Air Freight.Read More
-
1440Undisclosed2 - 9 employeesWhittier, CAExpedite IO, a small custom software development firm, is in Whittier, California. The team specializes in Custom Software Development and IT managed services.Read More
Featured providers
Get connected with a company for free
Tell us about your project, and we'll match you with vetted companies that meet your requirements.
Get connected with the right company for you
We'll do the work for you – finding and connecting you with service providers that meet your exact requirements.
Schedule ConsultationMost Reviewed IT Services Company in California
Check out an IT Services Company in California with the most new reviews in the past 12 months.
IT Services Company
California
- 11 7 new reviews
- 12 7 new reviews
- 13 7 new reviews
- 14 6 new reviews
- 15 5 new reviews
