A package that supports writing and formatting TeX files. Many different macro packages are supported, including AMS TeX, LaTeX, and TeXinfo.

A package that provides distinct support for doing labels, references and citations in LaTeX for both Emacs and XEmacs. It runs as a minor mode with any LaTeX major mode, most notably AUCTeX. Bundled and preinstalled with Emacs since version 20.2, or ...

A tool designed for generating program files that contain repetitive text with varied substitutions. This is especially valuable if there are several blocks of such text that must be kept synchronized. [Open Source, GPL]

A framework for testing other programs. Its purpose is to provide a single front end for all tests. Think of it as a custom library of Tcl procedures crafted to support writing a test harness. [GPL]

The default mail reader which ships with every emacs.

Free Fortran 77 compiler using the GCC back-end.

Official homepage at GNU site.

An open source flash movie player from the GNU project. Includes news, documentation, download, and bug tracking.

Small, portable, open-source streaming server for MP3, OGG and other formats.

GPL-licensed scripts to allow iPod management on Linux. News, documentation, and downloads.