| Business | Phone |
| Adezza Networks 13708 Ginkgo Ter, Rockville 20850 | (301) 279-7575 |
| V-One Corp 40 W Gude Dr # 200, Rockville 20850 | (301) 515-5200 |
| Axent Technologies Inc 2400 Research Blvd # 200, Rockville 20850 | (301) 258-5043 |
| Terminal Data Corp 15733 Crabbs Branch Way, Rockville 20855 | (301) 921-8282 |