| Csound - The portal on Csound, everything is there |
| CsoundAV - This version based on Csound is developed by Gabriel Maldonado - Real Time sound synthesis and 3D animations based on OpenGL - MIDI interaction |
| Pure Data - This Open Source tool can also combine sound and visual synthesis (by uisng the GEM library) |
| Eclipse - Open Source Java IDE |
| HPKComposer previous versions Here is a link to the download page of the previous HPKComposer tool (for archiving purpose) |