Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Masterwriter - MasterWriter offers a suite of writing tools.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets
AZRhymes - Free online rhyming dictionary for writing lyrics.
Bigtent - BigTent is a web-based organization and communication portal for groups.
Lazyjot - Modern web-app editor for writing lyrics