TripIt - TripIt is a travel app that creates a master itinerary to organize all of your plans for your vacation or work trip in one spot.
Planmesh - The easiest way to plan with friends
Roadtrippers - The ultimate road trip planner to help you discover extraordinary places, book hotels, and share itineraries all from the map.
tripcake - Doodle for travel plans with friends
Sygic Travel Maps - Itinerary planner for independent travelers
Onin - Plan events without leaving the conversation