Philipp Gesang
Process reStructuredText with ConTeXt
Transliterate text from ‘other’ alphabets
Encrypt documents with a three rotor Enigma
Write numbers as cyrillic glyphs
Additional Lua functions for LuaTeX macro programmers
Use LuaTeX's built-in METAPOST interpreter
OpenType layout system for Plain TeX and LaTeX
Basic resource management for LuaTeX code