emacs-epackage is an Emacs extension for the Distributed Emacs Lisp Package System (DELPS). With it, you can install Emacs extensions that have been made available as Git DVCS repositories. This format is called "epackage".
An FFmpeg and SoX based EBU R128 compliant loudness scanner for audio files.
An IDE for HTML, Bash, Perl, PHP, C, etc.