Couch Surfing: Network connecting travelers with locals offering accommodations and advice. Members can be vouched for by other members or verified by paying a fee by credit card. Includes information about the organization, searchable database, message board, and chat room.
Friendship Force: Nonprofit cultural exchange organization promoting friendship and goodwill through an extensive program of homestay exchanges since 1977.
Global Freeloaders: Online community matching guests and hosts for accommodation exchange. Testimonials, FAQs, and a member database.
Hospitality Club: Hospitality exchange network with most members. They offer free accommodation and travel help and leave comments in each others' profiles after the stay. Includes a forum, chat, and wiki travel guides.
Hospitality Exchange: Publishes a paper membership directory twice a year, there is a membership fee.
International Police Association: This organization includes a Hospitality Club for retired and active law enforcement officers.
Lesbian & Gay Hospitality Exchange International: Network of lesbians and gay men from around the world who offer their hospitality to other members.
MeetURplanet: Australia-based club. Registration is free but paid membership is required to contact other members.
Pasporta Servo: For people speaking Esperanto. There is a membership fee.
Place2Stay: Offers a worldwide network of private accommodations. Includes information about accommodations, a forum, FAQ and chat room.
Servas International: Oldest hospitality exchange organization. Website includes a newsletter, FAQ and list of countries. There is a membership fee and new members are interviewed by Servas representatives.
Teachers Travel Web: Open to all educators. Site also includes home exchange listings.
Traveler Exchange: Slovakia based club with a small number of listings.
Travelhoo: One of the first online hospitality exchange networks. Features a very simple interface.
Warm Showers List: List of cyclists who offer their hospitality towards other touring cyclists.
Welcome Traveller Network: Members pay a nominal fee for bed and breakfast when visiting other members. There are several interest groups.
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.
World for Free: Publishes a paper membership directory. There is a membership fee.
Worldwide Homestay Exchanges: Site with a very small number of exchange offers, mostly from France. There is a membership fee.