GATE1 is an open source envelope generator for gate/volume control.
Features:
- Multi-segment editor.
- 12 patterns triggered by MIDI notes.
- Paint mode – erase, line, saw up, saw down ..
- Point type – hold, curve, s-curve, stairs ..
- Tempo sync or LFO rate (Hz).
- Attack and release smooth.
- Pre and post waveform display.
- Global tension control.
- MIDI trigger mode.
https://github.com/tiagolr/gate1
free download