dewdrop_lib includes: MixerChannel (signal routing and mixing), MixingBoard (graphic interface for MixerChannel), MIDISuite (MIDI handling framework), Voicer (voice-stealing note player with sequencers), PeakMonitor (graphic display of peak level of audio buses), pattern-based drum sequencers, fully-parametric multiband EQ, and a gui for TempoClock. These classes are periodically updated. Check the website for new versions.