Natron is a visual effects composition software. It supports many common image file formats (EXR, DPX, TIFF, JPEG, PNG); colorspace management via OpenColorIO, and visual effects via OpenFX / OFX plugins. It has low hardware requirements that allow real-time playback, comes with command line tools, and uses Python3 for scripting.
SongBase (formerly known as Song Builder) can be used for music creation. It allows to mix up to 15 instrumental voices and percussion tracks. About 128 instruments or a custom soundbank can be used. It allows quick editing as it uses JFugue MusicString notation, either using note names and octaves or by MIDI values and durations numerically or through character codes. Note sequences can be nested within patterns. Further features include MIDI and MusicXML export, backup and restore, a shared SQ