Alt.polyamory Homepage 
Lists many poly resources including groups, FAQs, books, and films with poly references. 

Poly resource as well as quarterly magazine on poly issues. Personals can be listed here free for members -- otherwise if you only want a personal ad and not the magazine there is a small fee. Check out the great message board and chat here. 

 
A personal effort to collect poly links and resources.

As the name implies, a website jam packed with polyamory information, including a message board and personal profiles.

An online polyamorous magazine which attempts to emphasize the importance of loving each other without conditions. An Unconditional Love supports all people in their quest to be who they are.

Poly MatchMaker: the perfect place to find your poly mate(s)!

The Institute for 21st Century Relationships exists to facilitate the fulfillment of the human potential for relating, and to support the freedom of consenting adults to discover and to practice the intimate relationship structure that best meets their emotional and human needs.

P.A.A.R.C. (Polyamory Awareness and Acceptance Ribbon Campaign) The Poly Ribbon displayed on a website indicates that the owner of that site supports the acceptance of polyamory as a socially accepted lifestyle. It does not necessarily mean that the owner of the site is practicing such a lifestyle, merely that s/he is in support of it. A link to this page serves to promote general awareness of the lifestyle and of this campaign.

Poly Purity Test So you think you're poly? Take this test and find out just how much!