Wikivoyage - the free worldwide travel guide that anyone can edit.
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.
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.
Sygic Travel Maps - Itinerary planner for independent travelers
TourPickr - Explore more than 400 000 hidden tourist places in Europe.
WorldMate - WorldMate is a travel app that helps individuals plan and organize trips. The app is available for Android and iOS mobile devices, and it is free to download and use.