Lesbian & Gay Hospitality Exchange International  
   Network of lesbians and gay men from around the world who offer their hospitality to other members.
   http://www.lghei.org

Servas International  
   Offers a hospitality matching service, for a fee. Includes a newsletter, FAQ and list of countries.
   http://www.servas.org/

Teachers Travel Web  
   Open to all educators. Site also includes home exchange listings.
   http://www.teacherstravelweb.com

Women Welcome Women World Wide  
   For women only. Aims to foster international friendship by enabling women of different countries to visit one another. There is a membership fee.
   http://www.womenwelcomewomen.org.uk

Warm Showers List  
   List of cyclists who offer their hospitality towards other touring cyclists.
   http://www.rogergravel.com/wsl/vh_for_a.html

World for Free  
   Publishes a paper membership directory. There is a membership fee.
   http://www.worldforfree.com

International Police Association  
   This organization includes a Hospitality Club for retired and active law enforcement officers.
   http://www.ipa-usa.org

Welcome Traveller Network  
   Members pay a nominal fee for bed and breakfast when visiting other members. There are several interest groups.
   http://www.welcometraveller.org

Worldwide Homestay Exchanges  
   Site with a very small number of exchange offers, mostly from France. There is a membership fee.
   http://membres.lycos.fr/elcd/

Pasporta Servo  
   For people speaking Esperanto. There is a membership fee.
   http://www.tejo.org/ps/

Place2Stay  
   Offers a worldwide network of private accommodations. Includes information about accommodations, a forum, FAQ and chat room.
   http://www.place2stay.net

Travelhoo  
   One of the first web based networks with a very simple interface.
   http://www.travelhoo.com/travelhoo/default.asp

MeetURplanet  
   Graphic intense Australia based club. Registration is free, but to contact other members you have to pay.
   http://www.meeturplanet.com

Traveler Exchange  
   Slovakia based club with a small number of listings.
   http://www.traveler-exchange.com/

Artist Couch Exchange  
   Database of individuals who can offer touring musicians and other artists a place to stay while on the road. Includes membership information and mailing lists.
   http://couchexchange.org/

Hospitality Club  
   Offers a network of members that offer free accommodation and travel help. Includes a forum, chat and travel guides. Available in many languages.
   http://www.hospitalityclub.org

Hospitality Exchange  
   Publishes a paper membership directory twice a year, there is a membership fee.
   http://www.hospex.net

Couch Surfing  
   Online community based on the concept of offering a couch to visitors. To become a verified member, payment by credit card is required.
   http://www.couchsurfing.com

Friendship Force  
   Nonprofit cultural exchange organization promoting friendship and goodwill through an extensive program of homestay exchanges since 1977.
   http://www.friendshipforce.org

Global Freeloaders  
   Online community matching guests and hosts for accommodation exchange. Testimonials, FAQs, and a member database.
   http://www.globalfreeloaders.com