ZynAddSubFX Team http://zynaddsubfx.sourceforge.net
1 Pedalboard using it

ZynEcho

Plugin screenshot
Delay

Control Default Min Max
Delay 35 0 127
L/R Delay 64 0 127
L/R Cross 30 0 127
Feedback 59 0 127
High Damp 0 0 127
http://zynaddsubfx.sourceforge.net/fx#Echo v.0:7.0-6