Startups Anonymous - Anonymously ask questions and share stories. AA for Startups
Disciple - Grow, engage and monetise your community with Disciple community software. Get your own branded community platform on Web, iOS and Android
Lalo - Lalo is a platform for remembrance.
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!
Requstory - Requstory helps you write your user story quickly.
Proboards - ProBoards is a host of free forums with customer service.