| Business | Phone |
| Software Technologies Assoc 8108 Pepper Ridge Way, Gaithersburg 20877 | (301) 990-6821 |
| Capitol Cable & Technology Inc 7905 Airpark Rd, Gaithersburg 20879 | (301) 840-5700 |
| Retcorp Enterprises 7629 Laytonia Dr, Gaithersburg 20877 | (301) 977-8878 |
| Comm Vision Corp 211 Argosy Dr, Gaithersburg 20878 | (301) 590-9025 |