Students for the Exploration and Development of Space
- Forum, image archive, astro maps, best of Hubble, comet archive, and news located in Cambridge.
- http://www.seds.org

Gloucester Area Astronomy Club
- News, calendar, photo gallery, observing notes, games, links, and contact info.
- http://www.gaac.us

The Springfield Stars Club
- General information, events, features, and history.
- http://www.reflector.org/

South Shore Astronomical Society
- Directions, downloads, minutes, gallery, and events located at Norwell.
- http://www.ssastros.org/

Martha's Vineyard Amateur Astronomy Club
- Message board, observing information, and news.
- http://mvaac.fishspace.net/mvaac.htm

BayColony Astronomical Society
- General information and events located at Plymouth.
- http://maxpages.com/starastronomer

Astronomical Society of Southern New England
- General information, directions, topics, and newsletter located at Taunton.
- http://www.assne.org/

North Shore Amateur Astronomy Club
- Provides newsletter, upcoming events, programs, related links and gallery of astronomical images located at Groveland.
- http://www.nsaac.org/

American Association of Variable Star Observers
- Largest variable star observers' organization in the world, serving amateur and professional astronomers since 1911 in Cambridge.
- http://www.aavso.org

Amherst Astronomy Association
- Observing programs, astronomy classes, news, almanac, and gallery.
- http://www.amastro.org

Amateur Telescope Makers of Boston
- Getting started in amateur astronomy, archive, newsletter, star parties, schedule, resources in the area.
- http://www.atmob.org

Aldrich Astronomical Society
- News, calendar, kids page, gallery, and public outreach located in Paxton.
- http://www.aldrichastro.org/