| Business | Phone |
| Mac Asyst 907 N Rembrandt Ave, Royal Oak 48067 | (248) 280-9101 |
| Infoview Systems Inc 306 S Washington Ave, Royal Oak 48067 | (248) 586-1010 |
| Itsus 1025 N Campbell Rd, Royal Oak 48067 | (248) 398-0700 |
| Iwerk Inc 301 W 4th St, Royal Oak 48067 | (248) 336-9200 |
| Lewis Ig 301 W 4th St 140, Royal Oak 48067 | (248) 591-0000 |
| Laurel Computer Systems 314 S Laurel St, Royal Oak 48067 | (248) 398-5280 |
| 4 M Enterprises Inc 4020 Albert Ave, Royal Oak 48073 | (248) 288-1015 |
| Trillium Teamologies Inc 219 S Main St 300, Royal Oak 48067 | (248) 584-2080 |
| Structured Computer Systems 2076 Parmenter Blvd, Royal Oak 48073 | (248) 288-6125 |
| Schrieer & Schreier Pc 28000 Woodward Ave, Royal Oak 48067 | (248) 398-6290 |
| Computer Horizons Corp 1421 Cedarhill Dr, Royal Oak 48067 | (248) 267-4200 |
| Pc Network Center 1210 W 13 Mile Rd, Royal Oak 48073 | (248) 288-8882 |
| First Tech Direct 26622 Woodward Ave, Royal Oak 48067 | (248) 545-5830 |
| Net Solutions Inc 3022 Ferris Ave, Royal Oak 48073 | (248) 583-6114 |
| C! Tech Solutions 29488 Woodward Suite 195, Royal Oak 48073 | (586) 995-0509 |