Letter: R
- raptor - Raptor RDF Parser Toolkit for Redland
- raptor-devel - Libraries, includes etc to develop with Raptor RDF parser library
- rev-plugins - A reverberation plugin for LADSPA.
- rezound - ReZound is a sound file editor and recorder
- rosegarden4 - Midi, audio and notation editor
- rtirq - Realtime IRQ thread system tuning.
- rubyecasound - Ruby bindings to ecasound control interface.