| Business | Phone |
| Alea Systems 10810 Guilford Rd # 101, Annapolis Jct 20701 | (301) 776-3754 |
| Expert Network & Software Inc 10810 Guilford Rd # 107, Annapolis Jct 20701 | (301) 362-0500 |
| Omen Inc 135 National Business Pkwy, Annapolis Jct 20701 | (301) 725-8696 |
| Praxis Engineering Tech Inc 135 National Business Pkwy, Annapolis Jct 20701 | (301) 490-4299 |