The Battle for Wesnoth - The Battle for Wesnoth is a turn-based tactical strategy game with a high fantasy theme.
Xmind - Xmind is a brainstorming and mind mapping application.
Advanced Strategic Command - Advanced Strategic Command is a free, turn based strategy game.
MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.
Tanks of Freedom - Classic turn-based strategy game with two armies fighting against each other.
Coggle - Coggle is a simple, beautiful, powerful way of structuring information.