Minzel - Minzel is a beautiful and free mindmapping tool built for creatives and gives you the power to...

Gesturefy - Customizable mouse gesture addon, which supports over 40 different actions. Features:

TiddlyMap - An interactive concept- and mind-mapping plugin for the personal note-taking software TiddlyWiki based on the Vis.js library. It's free and open-source!

Strokeit - StrokeIt is an advanced mouse gesture recognition engine and command processor.

MindNet - MindNet is an effective productivity and learning tool that allows you to take notes, write down ideas, learn, brainstorm your mind, and much more in intuitive graphical mind maps.

Easystroke - Easystroke is a gesture-recognition application for X11.