Bifem.net
Community for women, offering chat, email lists, and a Yahoo! club.

Bisexual Chat Network
Offer rooms to bisexual sites. Link bisexual sites on the web in a common chat network.

Channel #bi
An area in IRC (Internet Relay Chat, in EFnet) for bisexuals and people of any orientation. Includes bios of regulars, help of various kinds, and an archive of "the best of #bi".

Soc.bi
The soc.bi usenet newsgroup's webpage; the internet's open forum on bisexuality since 1991.

Two Way Street
Forum for all ages and localities.

Women-oriented IRC
Introduction page for Undernet's #BiFemSex+ and #BiFemLounge. Includes mission, an introduction to IRC including how to join and chat, and related links.