| Business | Phone |
| Cyret Technologies Inc 8700 Centreville Rd 300, Manassas 20110 | (703) 365-9599 |
| Mcl Systems Ltd 10530 Linden Lake Plz, Manassas 20109 | (703) 530-8666 |
| Insystech Inc 7064 Infantry Ridge Rd, Manassas 20109 | (703) 530-8951 |
| Jdk Enterprises 8022 Community Dr, Manassas 20109 | (703) 369-9241 |