Wanderlog - Collaborative travel planner with combined itinerary and map
FareUpThere - Earn rewards for your feedback on flights
Scout - Scout ♥ monoliths.
Glympse - Glympse is the easy way to safely share your location in realtime. No sign-up needed.
PlanMoreTrips - Github for travel planning - no more spreadsheets!
Skyscanner - Skyscanner.com compares over 1000 airlines to find you the cheapest airfares, fast.