Wikivoyage - the free worldwide travel guide that anyone can edit.
Overnight - Book a last minute room with locals, in seconds.
Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.
FriendsTonight - Meet new friends to join your friends, tonight
Triptipedia - Triptipedia is a free collaborative encyclopedia of travel tips, where everyone can browse, save and share tips for better travel!
Facebook Local - Discover places to go and events happening near you