The most widely-used software tools from C4DM are Sonic Visualiser, aubio, and Tony.
A large part of our research is converted into Vamp plugins, which are compatible with Sonic Visualiser and Audacity across several operating systems.
Other C4DM software is available on isophonics.org.
We also run the SoundSoftware code repository which hosts software projects for audio and music researchers.
Finally, we maintain a C4DM group in GitHub, hosting public-facing code releases from the group.