Pollen - Pollen is a publishing system that helps authors create beautiful and functional web-based books.
MathJax - MathJax is a cross-browser JavaScript library that displays mathematical notation in web browsers.
Tectonic typesetting - A modernized, complete, standalone TeX/LaTeX engine.
AsciiMath - Easy-to-write markup language and JavaScript display engine for mathematics
SILE - SILE is a typesetting system inspired by TeX and InDesign, but seeks to be more flexible...
X (Twitter) - Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.