North Shore Amateur Astronomy Club
- Membership organization which promotes a wider appreciation of astronomy. Monthly newsletter, upcoming events, programs, related links and gallery of astronomical images.
- http://www.nsaac.org/

Salem Sound Coastwatch
- Coastal watershed association that works with government agencies, businesses, other nonprofit organizations and citizens from the communities of Manchester, Beverly, Danvers, Peabody, Salem, and Marblehead.
- http://www.salemsound.org/

Essex County Greenbelt Association
- Nonprofit land trust dedicated to preserving the open space heritage of Essex County.
- http://www.ecga.org/

Friends of Parker River National Wildlife Refuge
- 4,662 acre wetland sanctuary located on Plum Island, a natural barrier island off the coast of Massachusetts. Info provided on events calendar, membership, wildlife, permitted sports and activities.
- http://parkerriver.org/