Monarch Trips - A flexible, collaborative trip planner for iPhone and iPad
WhosDown - App where you can genuinely make friends—connecting with someone that shares a common interest
Sygic Travel Maps - Itinerary planner for independent travelers
Meetup for iOS and Android - Discover groups that are all about the things you love
journi - Travel Blogging Rediscovered
MEETplnr - Organize meetups in your chat groups with ease