Tasrix - Manage your tasks and monitor your productivity
Xmind - Xmind is a brainstorming and mind mapping application.
Taskwall - Remote teams and Individuals use Taskwall to stay organized with their projects, tasks, and team in a powerful application that adapts to the individual needs.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
FeatureMap - FeatureMap story mapping, simple and effective realtime collaboration and collective intelligence tool.