| Company | Category | Area | Address | Web | Contact person | |
| X-COM SYSTEMS LLC | Process Control Instruments | Virginia | 8809 SUDLEY RD STE 202, MANASSAS, Manassas (City), Virginia, 20110-4749, USA | - | - | Todd Smith |
| X-CORP CONSULTING INC | Consulting-system Application | Maryland | 3941 LOCH NESS CT, FREDERICK, Frederick, Maryland, 21704-7806, USA | - | - | Peter Fontin |
