Campnab - Nab that sold-out campsite!
BeWelcome - Open your door to the world!
Hipcamp - Book unique camping experiences on over 300,000 campsites, cabins, RV parks, public parks and more.
Trustroots - Travellers community for sharing, hosting and getting people together.
Campflare - Get notified when there are campsites open at your favorite campground. Its free.
Couchsurfing - CouchSurfing is your ticket to explore the world -- from the road or from your own home.