frontend program to cdparanoia, wget, cd-discid, id3, and your favorite Ogg/Vorbis, MP3, FLAC, Ogg/Speex, M4A, Opus, WavPack, Monkey's Audio (ape), MPP/MP+(Musepack) and/or AIFF format encoder (defaults to oggenc). Grabs an entire CD and converts each track to the specified formats and then comments or tags each file, with one command.

Foremost is a forensic program to recover lost files based on their headers, footers, and internal data structures.

PulseAudio, previously known as Polypaudio, is a sound server for POSIX and WIN32 systems. It is a drop in replacement for the ESD sound server with much better latency, mixing/re-sampling quality and overall architecture.

apvlv (Alf's PDF Viewer Like Vim) is a small and fast PDF/EPUB/TXT/FB2 viewer, that uses poppler for rendering. Its interface aims to users who like vim behaviour. For example opening a PDF file can be done with ':o filename'. apvlv can also work with tabs, so you can open multiple files at the same time in one program.

Cairo is a multi-platform library providing anti-aliased vector-based rendering for multiple target backends. Paths consist of line segments and cubic splines and can be rendered at any width with various join and cap styles. All colors may be specified with optional translucence (opacity/alpha) and combined using the extended Porter/Duff compositing algebra as found in the X Render Extension.