Travellar - A social travel app

Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.

RoomForTea - A female-friendly housing network in London, UK.

Vamos - Local Event Discovery

Magpie - Female travelers club - meet women like you when you travel

Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.