LoftJump is a project mainly written in Java, it's free.
Cushion your fall with feathers (or anything else)!
Step 1) Toggle LoftJump Step 2) Hold your feather in your hand Step 3) Reduce fall damage!
Command reference: /loftjump (alias /lj) /loftjump toggle [player] (alias /lj t) - toggle a player's use /loftjump free [player] (alias /lj f) - toggle item consumption on a player /loftjump check [world] (alias /lj c) - check the file configuration for a world /loftjump reload - reload the file configuration
Permissions nodes: loftjump.use loftjump.free loftjump.free.others loftjump.toggle loftjump.toggle.others loftjump.check loftjump.check.others loftjump.reload
If Permissions is not detected, then these default to checking OP status.