| Business | Phone |
| Compumart 8450 Tyco Rd A, Vienna 22182 | (703) 827-0000 |
| Computer Service Design Corp 310 Dominion Rd Ne, Vienna 22180 | (703) 281-0001 |
| Computer System Supply Corp 2011 Lord Fairfax Rd, Vienna 22182 | (703) 822-0300 |
| Computerware Inc 8480 Tyco Rd I, Vienna 22182 | (703) 821-8200 |