uLouder - Modern Craigslist and Nextdoor for urban nomads
Kiwi.com - Find and book the best low-cost flights all around the world
Explore nearby places for Airbnb - Discover must-see places when browsing Airbnb (Chrome ext)
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.
Whereabouts - Write posts and chat (group or 1-on-1) with people nearby!
Sygic Travel Maps - Itinerary planner for independent travelers