List of TeX extensions

Languages

• ArabTeX - adds support for Hebrew and Arabic alphabets
• FarsiTeX - adds support for Farsi
• Omega - extends multilinguality by using the Basic Multilingual Plane of Unicode
• XeTeX - uses Unicode, adds additional fonts
• TIPA - supports phonetic characters
• CTeX - Chinese TeX
• MonTeX - Mongolian LaTeX

  Science

• AMS-LaTeX and AMS-TeX - classes and packages developed for the American Mathematical Society; extensions of LaTeX and TeX respectively
• CircuiTikZ - adds creation of electrical networks
• REVTeX - collection of LaTeX macros used for scientific journals
• XyMTeX - supports chemical structure diagrams

  General

• BibTeX - adds reference management software
• ConTeXt - general-purpose document processor
• LaTeX - collection of macros written by Leslie Lamport
• LuaTeX - all internals can be accessed from Lua
• pdfTeX - outputs PDF files directly

  Other

• MusiXTeX - allows music typesetting
• PGF/TikZ - languages that provide vector graphics
• PSTricks - allows using PostScript drawings
• Texinfo - used for software manuals, can produce both print and Web documentation)