Best IT MSP ranks 363 managed IT providers serving manufacturing clients in California. The review-weighted rating is 4.88 out of 5 across 12,195 verified Google reviews.
| # | Provider | Rating |
|---|---|---|
| 1 | Integrity Tech Rancho Cucamonga, CA (9439 Archibald Ave #109, 7.70 miles from Eastvale City Hall) | 108 reviews |
| 2 | KME Systems Irvine, CA (Rockfield Boulevard, about 2 miles from Lake Forest) | 380 reviews |
| 3 | Relion Cerritos, CA (19.9 driving miles, serving Baldwin Park) | 95 reviews |
| 4 | BRITECITY Irvine, CA (14.3 miles) | 86 reviews |
| 5 | Advanced Networks Los Angeles, CA (serving the South Bay) | 88 reviews |
| 6 | LAN WAN Enterprise Irvine, CA | 172 reviews |
| 7 | Intelligent Technical Solutions (ITS) San Francisco, CA (serving the Bay Area) | 107 reviews |
| 8 | Network Remedy Santa Clara, CA (serving the Bay Area) | 80 reviews |
| 9 | Intelecis Irvine, CA (Orange County) | 87 reviews |
| 10 | The Tech Consultants (TTC) Carson, CA | 76 reviews |
| 11 | GenCare Glendale, CA | 116 reviews |
| 12 | Methodology IT Los Angeles, CA (7.6 miles, serving Redondo Beach) | 159 reviews |
| 13 | Managed Solution Mission Hills, CA (serves La Mesa) | 76 reviews |
| 14 | Forum Info-Tech Corona, CA (Inland Empire) | 172 reviews |
| 15 | Sam's IT Solutions Pasadena, CA (San Gabriel Valley, serving El Monte) | 431 reviews |
| 16 | IT Support LA Calabasas, CA (21.2 road miles from Camarillo) | 128 reviews |
| 17 | Blue Network Inc Long Beach, CA (8.8 miles; Rancho Dominguez office about 6.1 miles) | 39 reviews |
| 18 | GitsTel North Highlands, CA (serving Elk Grove) | 49 reviews |
| 19 | smpl solutions Lake Forest, CA (Orange County) | 22 reviews |
| 20 | RJ PRO Tech Group Valley Springs, CA | 36 reviews |
| 21 | DivergeIT Torrance, CA (11.8 miles, serving Lakewood) | 76 reviews |
| 22 | Noble Technology Group La Mesa, CA | 60 reviews |
| 23 | Professional Computer Concepts (PCC) Novato, CA | 18 reviews |
| 24 | Be Structured Technology Group Los Angeles, CA (serving Compton) | 65 reviews |
| 25 | NSI - Network & System Integration Temecula, CA (20.2 road miles from Hemet) | 13 reviews |
| 26 | HAAG Networking Tustin, CA (serving Orange) | 11 reviews |
| 27 | Atech MSP Bakersfield, CA | 51 reviews |
| 28 | WTC - Managed IT Services Ventura County (serving Oxnard) | 12 reviews |
| 29 | CMIT Solutions of Anaheim West Anaheim, CA (serving Garden Grove) | 34 reviews |
| 30 | Alpha Computers Corona, CA (1690 W 6th St #E, 7.19 miles from Eastvale) | 74 reviews |
See the national manufacturing ranking.
A manufacturer's IT problem is usually an OT problem. Machines on the shop floor run controllers no one wants to patch during a production run, often on operating systems the vendor stopped supporting years ago, and an hour of downtime is measured in lost output rather than lost email.
NIST 800-171 and CMMC where defense work is in the supply chain, ISO 27001 where customers demand it, and segmentation between the business network and the plant floor as a matter of basic practice rather than compliance.
Drawn from the providers ranked on Best IT MSP's California city listings and filtered to those whose own recorded data names manufacturing. Specialization is never inferred. Entries are deduplicated to one per company and ordered by the same confidence-weighted rating the city listings use. Paid placement is labelled and excluded from the structured data.
363 providers ranked in California record manufacturing among the industries they serve. Each company is counted once.
Yes. It is drawn from the providers ranked on Best IT MSP's California city listings, filtered to those whose own data names manufacturing.
NIST 800-171 and CMMC where defense work is in the supply chain, ISO 27001 where customers demand it, and segmentation between the business network and the plant floor as a matter of basic practice rather than compliance.
How do you segment the plant floor from the business network, and can you show it?; What is your approach to machines running unsupported operating systems we cannot replace?; What does your response look like at 2am when a line goes down?
By a confidence-weighted rating that accounts for review volume, so a 5.0 average on four reviews does not outrank a 4.9 on two hundred and fifty. Paid placement is labelled and never mixed into the earned order.
It is a live rollup of the California city listings, rebuilt whenever those change. The data behind this page is current as of October 2026.