| Business | Phone |
| Planned System Intl 46967 Bradley Blvd # C, Lexington Park 20653 | (301) 737-5000 |
| Prosoft Engineering 22776 Three Notch Rd # 203, Lexington Park 20653 | (301) 737-7780 |
| Binary Systems 21625 Columbia St, Lexington Park 20653 | (301) 866-5478 |
| Enterprise Rent-A-Car 22043 Three Notch Rd, Lexington Park 20653 | (301) 866-9500 |
| Universal Systems Inc 22289 Exploration Dr, Lexington Park 20653 | (301) 862-7900 |