NomadWiki.org Info and tips for nomads about shoestring budget traveling
BeWelcome.org Invite travelers to your home, find hosts all over the world, and become part of our multicultural hospitality community
TrustRoots.org Free and Open-Source hospitality Network. Sharing, hosting and getting people together.
HitchWiki.org Information about hitchhiking and other ways of extremely cheap ways of transport.
More related links are here: https://hitchwiki.org/en/Websites
bikesurf.org Very cool project that provides free bicycles for travelers visiting a city. You can start your own cell using their online platform
warmshowers.org Free worldwide hospitality exchange for touring cyclists. People who are willing to host touring cyclists sign up and provide their contact information, and may occasionally have someone stay with them and share great stories and a drink
viacampesina.org Movement which brings together millions of peasants, small and medium-size farmers, landless people, women farmers, indigenous people, migrants and agricultural workers from around the world. It defends small-scale sustainable agriculture as a way to promote social justice and dignity.
Pro bono Web design and search engine optimisation (SEO) for non-profits such as this website.