Planview IdeaPlace - Spigit is a software program designed to help CEOs and industry leaders to tap into the creativeness of their employees. It brands itself as an idea management tool. Read more about Spigit.
Xmind - Xmind is a brainstorming and mind mapping application.
Brightidea - With over 2 million users worldwide and $15+ billion in recorded business impact, Brightidea is ranked as the #1 Idea Management Platform globally and is the market leader in innovation management.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
ScatterNote - A note-taking app for networked thought
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.