nekobee is a DSSI soft synth plugin that emulates the sound of the TB-303 Bassline. It is not an exact copy; rather than make it "just like the real thing", the design concentrates on modelling the circuitry and was adjusted by comparing the sounds achievable with it to those heard on classic acid house tracks. It includes a switchable square/saw wave VCO, 24dB/octave VCF, an adjustable decay time for the VCF, a fixed decay time for the VCA, and an interesting bit of circuitry around the "Accent" control.
Tao is a software package for sound synthesis using physical models. It provides a virtual acoustic material constructed from masses and springs, which can be used as the basis for building quite complex virtual musical instruments. It comes with a synthesis language for creating and playing instruments and a C++ API for those who would like to use it as an object library.
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.
SoundTracker is a pattern-oriented music editor (similar to the DOS program 'FastTracker'). Samples are lined up on tracks and patterns which are then arranged to a song. Supported module formats are XM and MOD; the player code is the one from OpenCP. A basic sample recorder and editor is also included.
Csound is a powerful and yet easy to use musical synthesis package. Csound was constructed in the tradition of so-called music-N languages, among which the best-known is Music V. It consists of an orchestra- and score-driven executable, written in C for portability. Since Csound is a computational language, it is highly flexible and efficient; complexity is gained only at the expense of computation power. Basically, Csound reads some files and creates the result as a sound file on disk or, on faster machines, in real time through a DAC.