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.
Topia - Create amazing wallpapers for your iPhone
Vamos - Local Event Discovery
Gather Town - Spatial video-chat worlds for work and play
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
VRChat - Create and play in virtual worlds with others