Crossroad - Don’t chase after your friends’ pictures anymore

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

Togethera - Make your family smile. Share photos & videos privately.

Eventbrite - Discover Great Events or Create Your Own & Sell Tickets

New Google Photos - Shared suggestions, libraries and photo books

Bigtent - BigTent is a web-based organization and communication portal for groups.