Wireflow - Create beautiful flowcharts
Minzel - Minzel is a beautiful and free mindmapping tool built for creatives and gives you the power to...
Vexlio - Instantly create precise, beautiful diagrams
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!
Zen Flowchart - The simplest tool to create flowcharts
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.