KitKorp Computer Repair
- Provides in-home computer repair in Bethesda and the Washington DC area. Has listing of services.
- http://www.kitkorp.com/

Durango Software
- Offers computational tools for performing human exposure analyses related to pesticides.
- http://www.durango-software.com/

eMetaStar, LLC
- Provides Open Source solutions including content management and web design. News, FAQ and categorized services.
- http://www.emetastar.com/

Watkins Information Technology Group, L.L.C.
- Offers IT solutions.
- http://www.watkinsit.com

OPNET Technologies, Inc.
- Creates management software for communications networks. Its simulation-based products are used to design, build, and operate new networks and services and to predict and analyze network performance problems. (Nasdaq: OPNT).
- http://www.opnet.com/

Rent-A-Computer
- Provides rentals of computer and audiovisual equipment, as well as networking and computer support services for small and medium sized businesses.
- http://www.racsolutions.com/

SER Solutions, Inc.
- Makes knowledge management software for e-commerce, customer interaction and business automation.
- http://www.sersolutions.com/

Bethesda Softworks
- "The third largest privately held personal computer entertainment software company in America."
- http://www.bethsoft.com/