| Business | Phone |
| Braun Computer Consulting Escondido 92025 | (760) 745-8245 |
| Burbidge & Assoc 1835 S Centre City Pkwy # A, Escondido 92025 | (760) 747-9011 |
| Ccix Inc 3325 Via Loma Vis, Escondido 92029 | (760) 432-6667 |
| Celestia Group 2235 Enterprise St, Escondido 92029 | (760) 746-9800 |
| Cornerstone Infrastructure Sol 700 W El Norte Pkwy, Escondido 92026 | (760) 480-8085 |
| David A Casey Consulting Inc Escondido 92025 | (760) 741-9164 |
| Design Data Inc 1081 Borden Rd, Escondido 92026 | (760) 489-9988 |
| Enabled Microsystems 1518 Via Salerno, Escondido 92026 | (760) 735-9520 |
| Faiman Engineering 715 N Broadway # 90, Escondido 92025 | (760) 432-6429 |
| Applied Electromagnetics 2335 Cortina Cir, Escondido 92029 | (760) 745-6907 |
| Muletron 1812 Country Club Dr, Escondido 92029 | (760) 432-8774 |
| Mobileman Computer Tech Svc Escondido 92027 | (760) 745-5514 |
| Mercury Computer Systems Inc 456 E Grand Ave # 201, Escondido 92025 | (760) 739-1900 |