| Business | Phone |
| Ade Of Wisconsin Inc 4669 N Port Washington Rd 50, Milwaukee 53212 | (414) 332-4866 |
| Adp Dealer Svc 10308 W Bluemound Rd C, Milwaukee 53226 | (414) 476-6660 |
| Associated Data Processing Svc 7915 W Appleton Ave 101, Milwaukee 53218 | (414) 462-9034 |
| Compuware Corp 732 N Jackson St, Milwaukee 53202 | (414) 225-4011 |
| Data Base Inc 2821 N 4th St 310, Milwaukee 53212 | (414) 263-3533 |
| Data Exchange Ctr Inc 9041 N Deerwood Dr, Milwaukee 53223 | (414) 355-5906 |
| E Funds Corp 11100 Liberty Dr 100, Milwaukee 53224 | (414) 341-5000 |
| K & S Data Svc 7363 N Mohawk Rd, Milwaukee 53217 | (414) 228-7936 |
| M & I Data Svc 130 N Water St, Milwaukee 53202 | (414) 273-0018 |
| Metavante Corp 11000 W Lake Park Dr, Milwaukee 53224 | (414) 357-2290 |