Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Disciple - Grow, engage and monetise your community with Disciple community software. Get your own branded community platform on Web, iOS and Android
SmartMoneyMatch - Create a 100% free account to connect to the global asset management industry. Get access to the best money managers or list your investments, RFPs, jobs, events, business services, and more.
Forumotion.com - Create a free forum : free forum hosting, free forum skins, templates editing, chatbox, RPG mod... Choose PhpBB 2 - 3, Invision or PunBB. Create forums now!
SportEasy - SportEasy is an awesome app to communicate with your team and organize your games and practices...
Proboards - ProBoards is a host of free forums with customer service.