iodine lets you tunnel IPv4 data through a DNS server. This can be useful in situations where Internet access is firewalled, but DNS queries are allowed. It needs a TUN/TAP device to operate. The bandwidth is asymmetrical with limited upstream and up to 1 Mbit/s downstream.
mdp wraps GnuPG, your favorite editor, a password generator, and a custom temporary fullscreen pager to let you manage your password library securely with the bare minimum. The pager is used to avoid passwords lingering on screen.
prwd is a tool to print your working directory in a reduced form for your shell prompt. The path can be shortened using aliases, a maximum length, a filler character or in the style of a newsgroup. prwd can also read your branch in git and mercurial repositories.
Siren is a text-based audio player for Unix-like operating systems. It supports Ogg Vorbis, MP3, FLAC, WavPack, WAVE, AIFF, and a few other file formats. Playback is possible through sndio, PulseAudio, ALSA, OSS, Sun audio, and libao.