XmdvTool is a public-domain software package for the interactive visual exploration of multivariate data sets. It is available on all major UNIX/LINUX/MAC and Window platforms. XmdvTool is developed based on OpenGL and Tcl/Tk. It supports five methods for displaying flat form data and hierarchically clustered data: 1. Scatterplots 2. Star Glyphs 3. Parallel Coordinates 4. Dimensional Stacking 5. Pixel-oriented Display
VisualWikipedia is a visual, intuitive, and interactive web interface to encyclopedic knowledge/information. It is designed to provide a fun place to learn stuff in an efficient manner. Please watch the following video to get a good sense of how to use it.
Waterbear is a toolkit for creating drag-and-drop programming languages, with some example languages you can play around with and learn from. The goal is to make it easy to wrap other existing languages with Waterbear blocks to create draggable, snappable syntaxes for them.
J. Lin, E. Keogh, S. Lonardi, J. Lankford, и D. Nystrom. Proceedings of the tenth ACM SIGKDD international conference on Knowledge discovery and data mining, стр. 460--469. ACM, (2004)