π Education
OpenBoard is a cross-platform interactive whiteboard application intended for use in a classroom setting.
The Sage Cell Server---providing a way to embed Sage computations into any web page.
SnapPy is a package for studying the topology and geometry of 3-manifolds, with a focus on hyperbolic structures. It is based on the SnapPea kernel written by Jeff Weeks.
Interactive roadmaps, guides and other educational content to help developers grow in their careers.
PreTeXt: an authoring and publishing system for scholarly documents
Interactive Linear Algebra, free online textbook at Georgia Tech
A web-based collaborative LaTeX editor
A git clone of the topmod SVN repository at code.google.com/p/topmod
Cross-platform computer monitoring and classroom management