| Business | Phone |
| Systems & Management Assoc 3103 Edgewood Rd, Kensington 20895 | (301) 942-3453 |
| Techris Systems 4616 Saul Rd, Kensington 20895 | (301) 897-0345 |
| Breger & Assoc Kensington 20895 | (301) 942-3615 |
| Connect Point Intl 5020 Nicholson Ct # 205, Kensington 20895 | (301) 468-6931 |
| Halifax Associates Kensington 20895 | (301) 949-0980 |
| Likbez 11230 Waycross Way, Kensington 20895 | (410) 326-7197 |
| Kensington Systems Inc 11303 Palisades Ct, Kensington 20895 | (301) 942-2005 |