| Business | Phone |
| Brizon Data Systems 5027 W North Ave, Milwaukee 53208 | (414) 445-6047 |
| Computing Techniques Inc 2360 N 124th St, Milwaukee 53226 | (262) 242-3734 |
| Deluxe Data Systems Inc 400 W River Woods Pkwy, Milwaukee 53212 | (414) 341-2000 |
| Emc Corp 330 E Kilbourn Ave 1100, Milwaukee 53202 | (414) 276-2203 |
| I S Management Strategies Ltd Milwaukee 53217 | (414) 332-3062 |
| Known Resource Svc Corp 1507 W Vogel Ave, Milwaukee 53221 | (414) 281-2359 |
| Link Development Corp 2401 N Mayfair Rd # 300, Milwaukee 53226 | (414) 774-2010 |
| National Financial Corp 700 W Virginia St, Milwaukee 53204 | (414) 289-9140 |
| Rjt Compuquest Inc 1110 N Old World 3rd St, Milwaukee 53203 | (414) 287-0096 |