Eureka is a cross-platform map editor for the classic DOOM games. It started as a fork of the Yadex editor attempting to make it use the FLTK GUI toolkit and implement multiple Undo / Redo.

GNU `m4' is an implementation of the traditional UNIX macro processor. It is mostly SVR4 compatible, although it has some extensions (for example, handling more than 9 positional parameters to macros). `m4' also has builtin functions for including files, running shell commands, doing arithmetic, etc. Autoconf needs GNU `m4' for generating `configure' scripts, but not for running them.

High-level wrapper around a subset of the OpenSSL library, includes

Instead of offering an HTML5 player to modern browsers and a totally separate Flash player to older browsers, MediaElement.js upgrades them with custom Flash and Silverlight plugins that mimic the HTML5 MediaElement API.

For interacting with USB devices directly from Python, this library may come in handy.