libdwarf reads and/or writes DWARF debugging information in Elf object files. dwarfdump uses libdwarf to read object files and print the DWARF content in a readable fashion. libdwarf implements the DWARF2 (and later) standard by providing function interfaces that abstract away many DWARF implementation details (the writer code only emits DWARF2 so far). The source also includes implementations of a few tree search (tsearch) algorithms (balanced, red-black, and binary).
lcdgrilo is a Grilo-based media player for use on a Raspberry Pi with a PiFace CAD. Because it is based on Grilo, it can play media from any Grilo audio source, including DMAP, Jamendo, and Magnatune. It makes use of the PiFace CAD for input and output through the use of a menu-based interface.
Gespeaker is a GTK+ frontend for espeak. It allows you to play a text in many languages with settings for voice, pitch, volume, and speed. The text can also be recorded to a WAV file for future listening. Gespeaker supports the speech synthesizer MBROLA for a better speech experience.