| Business | Phone |
| Compu Tate Inc 720 N Abingdon St, Arlington 22203 | (703) 527-7149 |
| D P Assoc Inc 3401 Columbia Pike 4, Arlington 22204 | (703) 521-6236 |
| Ballston Center For Computing Arlington 22209 | (703) 247-1400 |
| Nu-Technologies Corp 1735 N Lynn St, Arlington 22209 | (703) 351-6562 |