| Business | Phone |
| Absolute Quality Computer Rpr 8993 Centerway Rd, Gaithersburg 20879 | (301) 417-9011 |
| Advanced Personal Computers Po Box 3388, Gaithersburg 20885 | (202) 445-4616 |
| Watza 11946 Marmary Rd, Gaithersburg 20878 | (301) 495-3390 |
| Answer Inc 24117 Woodfield School Rd, Gaithersburg 20882 | (301) 873-7397 |
| Celtic Technologies Inc 17820 Hazelcrest Dr, Gaithersburg 20877 | (301) 947-8105 |
| D & M Consulting Gaithersburg 20877 | (301) 987-8922 |
| Design Data Systems Inc 7606 Lindbergh Dr, Gaithersburg 20879 | (301) 921-6696 |
| P C Medic 8932 Centerway Rd, Gaithersburg 20879 | (301) 963-3989 |
| Exec-U-Comp Information System 34 Solitaire Ct, Gaithersburg 20878 | (301) 921-4323 |
| Gajo Computers 714 Clopper Rd # 101, Gaithersburg 20878 | (301) 977-7111 |
| Micro Computer Rentals 16021 Industrial Dr # 14, Gaithersburg 20877 | (301) 840-0809 |
| Mke Computers Gaithersburg 20877 | (301) 963-6545 |
| Image Microsystems Inc 16021 Industrial Dr # 10, Gaithersburg 20877 | (301) 990-0755 |
| Laser Action 20100 Torrey Pond Pl, Gaithersburg 20886 | (301) 417-7171 |
| Izone Inc Gaithersburg 20877 | (301) 926-8226 |
| Potomac Computer Services 12523 Gooderham Way, Gaithersburg 20878 | (240) 447-7507 |