Sygic Travel Maps - Itinerary planner for independent travelers
Booking.com - Find your next stay. Search deals on hotels, homes, and much more...
Wanderlog - Collaborative travel planner with combined itinerary and map
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.
Tripsy - Planning your trip has gotten much easier.
Scout - Application Monitoring that finds what you can't see in charts.