XChestival is an improved version of xchat_speak designed for Italian. It lets xchat and irssi "speak" through festival. It comes with a script for xchat and irssi and the Italian phonemes. The scripts have some useful features like channels and query filtering and string substitution.
Heilan is a standalone OpenGL X3D browser designed for audio work. It features a low latency Ambisonic audio engine, allowing for full 3D sound with virtually any configuration of speakers. It also has full Open Sound Control support, allowing scenes to be manipulated in realtime.