Anglo American Climbers: For American and English Climbers in East Anglia. Discussion forum and chat.
Bay Area Mountaineering Society: Discussion forum and chat. (San Francisco, California)
Bay Area Rock: Discussion forum. Chat. (San Francisco Bay area, California)
Climb For Christ: For young climbers, Christian or not. Discussion forum and chat.
Climbing News Mailing List: Mailing list plus archives. Discussion forums.
Climbing Talk: Forums for rock climbing, bouldering, aid climbing, mountaineering, and ice climbing.
DC Outdoors: Discussion forum and chat.
drexelClimbing: Trip reports and photos. Message board.
Flatlander: "A cardboard box for the climbing homeless." Discussion forum and chat.
KlimbOn: Discussion forum and chat.
Mountaineering: Discussion forum and chat for an international community of mountain climbers.
MSN Group: Rock Climbing: Discussion forum with special board for Washington.
MSN Groups: Mountaineering: Discussion forum covers mountaineering, rock climbing, and ice climbing.
MSN Groups: Rock Climbing Rocks: Discussion forum with photos.
New England Rock Club: Discussion forum. Chat. Photos. (New England)
Rainier: Discussion forum and chat.
Red River Climbing: A message board with general topics and a focus on climbing at the Red River Gorge, Kentucky.
Rock Climbing and Bouldering: Discussion forum and chat.
Rock Climbing.com Forums: Includes general discussion forums as well as special forums for ice climbing, aid climbing, bouldering, trad climbing, and competition climbing.
Sport Climbing: For sport climbing. Discussion forum and chat.
Stonewall Climbers: Gay, lesbian, and bisexual online club. Discussion forum and chat.
UT Climbers: Discussion forum. (Utah)
Utah Climbers: A public forum for Utah based climbers.
Utah's Climbing Network: Discussion forum. Chat. (Utah)
Women on the Wall: For women. Discussion forum and chat.
Zoner's Pub: Discussion forum with archives.