| Business | Phone |
| Essentia Communications 1572 Eton Way, Crofton 21114 | (410) 721-8522 |
| Marine Trak Inc 1686 Village Grn, Crofton 21114 | (410) 721-5800 |
| Performance Network Engrg Llc 1704 Pepperbush Ct, Crofton 21114 | (410) 451-7595 |
| Saratoga Direct Inc 2131 Espey Ct # 7, Crofton 21114 | (410) 451-7890 |