| Business | Phone |
| American Trader's Post 5328 Ballenger Creek Pike, Frederick 21703 | (301) 695-8438 |
| Cables Etc 502 E Church St, Frederick 21701 | (301) 663-6883 |
| Computer Station Of Frederick Frederick 21701 | (301) 620-1700 |
| Csp Enterprises 8709 Reichs Ford Rd, Frederick 21704 | (301) 695-9517 |
| Daytech Systems & Software Frederick 21701 | (301) 620-9190 |
| Eberly Carpentry 1715 Castle Rock Rd, Frederick 21701 | (301) 682-3283 |
| En Net Svc Inc 3 College Ave # 7, Frederick 21701 | (301) 846-9901 |
| Federal Micro Warehouse 5301 Buckeystown Pike, Frederick 21704 | (301) 662-3077 |
| Geex Inc Po Box 1968, Frederick 21702 | (301) 668-6080 |
| Karpooz Inc 4507 Metropolitan Ct, Frederick 21704 | (301) 874-0034 |
| Patriot Technologies 5108 Pegasus Ct # F, Frederick 21704 | (301) 695-7500 |
| Pattco Electronics Of Md 15 Wormans Mill Ct # A, Frederick 21701 | (301) 694-2690 |
| Sirius Computer Solutions Inc Po Box 821, Frederick 21705 | (240) 379-6828 |
| Sndi 5711 Industry Ln # 3, Frederick 21704 | (301) 620-7634 |
| Software City 427 E Patrick St, Frederick 21701 | (301) 695-2792 |