Designer and programmer Jürg Lehni analyses the evolution of typographic technology and the nature of digital fonts, and introduces Donald E. Knuth’s groundbreaking TeX and Metafont systems.

Um, yes.

A swiss army knife for converting markup languages to other markup languages:

- Textile to Markdown
- Markdown to Textile
- Textile to Latex
- Markdown to HTML
- Etc

It's a Haskell command-line tool, but he set up a web service demo, too.