» 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. Includes information about the organization, searchable database, message board, and chat room.    http://www.couchsurfing.com

» Friendship Force    Nonprofit cultural exchange organization promoting friendship and goodwill through a 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

» Hospitality Club    Volunteer members offer free accommodation and travel help and leave comments in each others' profiles after the stay. Includes a forum, chat, and wiki travel guides.    http://www.hospitalityclub.org

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

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

» 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

» MeetURplanet    Community offering free membership to travellers and hosts. Includes city information, personal experiences and gallery.    http://www.meeturplanet.com/

» 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

» 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.    http://www.servas.org/

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

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

» 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

» 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