Patrick Gundlach
Show ConTeXt layouts
German TeX FAQ
Linux Libertine fonts for use with Lua(La)TeX and Xe(La)TeX
German version of “A Short Introduction to LaTeX2ε”: LaTeX2ε-Kurzbeschreibung
Mark hyphenations in a document, for checking
Visual debugging with LuaLaTeX
Ruby font installer library
Show all possible hyphenations in LuaLaTeX