Marine Corps League Detachment 394
- Lists officers, meeting dates and locations, and contact information.
- http://www.mcleague.com/mdp/userpages/SEACOAST-589.php

Portsmouth Old Graves
- Promotes the use of the city's old burial grounds as historic and educational urban parks. Includes grounds locations, upcoming events, membership and donor information, and related resources.
- http://www.portsmoutholdgraves.org/

Sherburne Civic Association
- Community neighborhood association. Message board, meeting minutes, history and contact information.
- http://www.sherburnecivic.org/

ProPortsmouth
- Non-profit group that supports and promotes the arts, culture, history, and community events in Portsmouth and the Seacoast area.
- http://www.proportsmouth.org/