Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
App in the Air - The perfect companion for everyone taking a flight.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
CheckMyTrip - Manage your trip and stay organized and productive during your journey, all your travel plans in...
Bigtent - BigTent is a web-based organization and communication portal for groups.
KDE Itinerary - Digital travel assistant with a priority on protecting your privacy