Auto Sustain for Ableton Live - Max for Live Device

This MIDI effect automatically sustain all notes and releases them when you realease all notes and then play some new notes again. This makes the chords sound like you press the sustain pedal on normal piano without the need for the actual sustain pedal. For this to work when playing with both hands, hold at least one note with your left hand and release it when you finish your chord.

It requires Ableton Live 11+ with Max for Live installed.