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!
D3.js - D3.js is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG, and CSS.
textografo - Online diagramming application which generate diagrams based on text and allows real time...
Chart.js - Easy, object oriented client side graphs for designers and developers.
Minzel - Minzel is a beautiful and free mindmapping tool built for creatives and gives you the power to...
Google Charts - Interactive charts for browsers and mobile devices.