Disciple - Grow, engage and monetise your community with Disciple community software. Get your own branded community platform on Web, iOS and Android
Envisage - Inject contextual help on your site. Point and click style.
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!
Airgora - A visual community for physical product designers
Proboards - ProBoards is a host of free forums with customer service.
Ocean - A Community of designers sharing feedback