Xmind - Xmind is a brainstorming and mind mapping application.

ForumFree - ForumFree allows you to create a forum or a blog in a few simple steps.

MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.

Proboards - ProBoards is a host of free forums with customer service.

MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.

Disciple - Grow, engage and monetise your community with Disciple community software. Get your own branded community platform on Web, iOS and Android