A collection of .NET libraries for rendering mathematical formulae
The universal markup converter
Beautiful pseudocode for the Web
The Ray Tracing in One Weekend series of books
Visualization components
Another drawing editor for LaTeX with PSTricks & TikZ
Simple LaTeX parser providing latex-to-unicode and unicode-to-latex
SparthMP is an ANSI-C math library for Multi-Precision calculations
LaTeX, AscciMath and MathML editor developed in Javascript and HTML