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.
Jump to Most Reviewed Companies
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
-
1531Undisclosed2 - 9 employeesSan Jose, CALevel Up MSP is a Business Consulting company. Launched in 2012, their team focuses on Business Consulting and IT managed services.Read More
-
1532Undisclosed2 - 9 employeesSan Mateo, CAFoxbiter IT is a Business Consulting company founded in 2015. The firm focuses on Business Consulting and IT managed services, and is small.Read More
-
1533Undisclosed2 - 9 employeesLancaster, CASimulations Plus is a custom software development firm and IT managed services company. Their team is based in Lancaster, California and offers Custom Software Development and IT managed services.Read More
-
1534Undisclosed2 - 9 employeesCupertino, CAAcionyx is a software development company. They are headquartered in Cupertino, California. Their team focuses on Custom Software Development and Application Management & Support.Read More
-
1535Undisclosed2 - 9 employeesSan Diego, CACutler Engineering & Technology Services LLC is a small Cybersecurity company based in San Diego, California. Their services include Cybersecurity and IT managed services.Read More
-
1536Undisclosed2 - 9 employeesClaremont, CAIn Claremont, California, ITS Consulting Incorporated is a CRM consulting and SI company. The team focuses on CRM consulting and SI and ERP consulting and SI.Read More
-
1537Undisclosed2 - 9 employeesLos Angeles, CARonin International LLC is an Engineering company. They are headquartered in Huntsville, Alabama and Los Angeles, California and have small team. They focus on Engineering and Cybersecurity.Read More
-
1538Undisclosed2 - 9 employeesLong Beach, CAData Lumination is a business intelligence company. The team specializes in BI & big data consulting & SI and Conversion Optimization, and the firm is located in Long Beach, California.Read More
-
1539Undisclosed2 - 9 employeesMilpitas, CACygne Noir Cyber, LLC, a Cybersecurity company, was established in 2023. The team specializes in Cybersecurity and IT managed services.Read More
Industries
-
1540Undisclosed2 - 9 employeesSan Jose, CAFounded in 1999, Calypso Systems, Inc., a small Application Testing company, is located in San Jose, California. Their services include Application Testing and BI & big data consulting & SI.Read More
-
1541Undisclosed2 - 9 employeesPalo Alto, CAFP&A Strategy Consulting is a Business Consulting company headquartered in Palo Alto, California. They specialize in Business Consulting and Corporate Training & Coaching and were established in 2012.Read More
Industries
-
1542Undisclosed2 - 9 employeesLake Forest, CAFroBro Web Technologies is a Lake Forest, California-based SEO company. The team provides Search Engine Optimization and Web Design.Read More
-
1543$5,000+2 - 9 employeesIrvine, CAAlkatek is an Email Marketing company. The Irvine, California-based agency specializes in Email Marketing and Social Media Marketing.Read More
Industries
-
1544$5,000+2 - 9 employeesSan Francisco, CAGuru Labs is a San Francisco, California-based Blockchain company. They focus on Blockchain and Custom Software Development and were launched in 2021.Read More
-
1545Undisclosed10 - 49 employeesLos Angeles, CACure8 - Cannabis IT Services is an IT managed services company. The Los Angeles, California-based agency was founded in 2021. Their services include IT managed services and Cybersecurity.Read More
-
1546$1,000+10 - 49 employeesSan Diego, CAWebzcribe is a SEO agency. Their team is in San Diego, California and focuses on Search Engine Optimization and Web Design.Read More
Industries
-
1547$5,000+10 - 49 employeesLaguna Beach, CABarrington Sutherland is a SEO agency in Laguna Beach, California. They specialize in Search Engine Optimization and Web Design.Read More
-
1548$5,000+10 - 49 employeesEl Cerrito, CAJoust is a branding agency. Established in 2022, their team offers Branding and Content Marketing.Read More
-
1549$25,000+1,000 - 9,999 employeesSan Francisco, CARead More
ALLSTARSIT is a software development company established in 2004. Their midsize team is headquartered in Ramat Gan, Israel. Their services include custom software development, IT managed services, cybersecurity, IT strategy consulting, and more.
Clients
VaronisIndustries
-
1550Undisclosed250 - 999 employeesIrvine, CAFounded in 2000, BatchMaster Software Pvt Ltd is a midsize ERP consulting and SI company in Indore, India and Irvine, California. Their team specializes in ERP consulting and SI.Read More
Industries
-
1551$1,000+50 - 249 employeesSan Jose, CACRM consulting and SI company Selectiva Systems inc is headquartered in San Jose, California and San Ramon, California. Their services include CRM consulting and SI and cloud consulting & SI.Read More
-
1552Undisclosed10 - 49 employeesLos Angeles, CAEstablished in 2016, Brander Group Inc. Is a Cybersecurity company. The small team specializes in Cybersecurity. The company is in Las Vegas, Nevada; Los Angeles, California and Scottsdale, Arizona.Read More
-
1553Undisclosed2 - 9 employeesIrvine, CAITO Solutions, Inc. Is a small cloud consulting & SI company headquartered in Irvine, California and Houston, Texas. Their services include cloud consulting & SI and CRM consulting and SI.Read More
-
1554$1,000+2 - 9 employeesLos Angeles, CARead More
ROI Express is an IT software company. Founded in 2016, the Los Angeles-based software company provides IT strategy consulting, artificial intelligence, and big data consulting services.
Clients
Privat Bank -
1555$1,000+2 - 9 employeesLaguna Beach, CASoftware Brush Inc is an Application Testing company. They are headquartered in Laguna Beach, California and have small team. Their services include Application Testing and IT strategy consulting.Read More
-
1556Undisclosed2 - 9 employeesSan Diego, CAStreamline AI Strategy is an AI Consulting company. They were established in 2023 and specialize in AI Consulting and Generative AI.Read More
-
1557$1,000+2 - 9 employeesSan Bruno, CALocated in San Bruno, California, Ovalweb is a small software development company. Their services include Custom Software Development and Web Design.Read More
-
1558$1,000+2 - 9 employeesMill Valley, CAFynch is an AI Consulting company. Located in Mill Valley, California, the agency provides AI Consulting and Generative AI.Read More
-
1559$10,000+2 - 9 employeesSan Francisco, CAMoulton Digital is a social media marketing agency. They focus on Social Media Marketing and Content Marketing and were established in 2016.Read More
-
1560$1,000+2 - 9 employeesIrvine, CAMake it happen Art & Tech is an Irvine, California-based software development firm. They offer Custom Software Development and Web Development and were established in 2020.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.
Most Reviewed
IT Services Company
California
- 11 7 new reviews
- 12 7 new reviews
- 13 7 new reviews
- 14 6 new reviews
- 15 5 new reviews
