Awesome

JRemapper

An easy to use GUI for remapping classes, methods, and fields of compiled java programs.

For information on how to use JRemapper and other details about it, check out the wiki.

The TLDR usage is as follows:

• Global keybinds
  • Control + N Open a jar file
  • Control + O Open mappings file
  • Control + E Export jar file (mappings are applied to output)
  • Control + S Save mappings to file (Json)
  • Control + Z Undo mapping change
  • Control + Y Redo mapping change
• Editor pane keybinds
  • N Navigate to selected item
  • Backspace Go to last item

Download

See the releases page for the latest build, or compile it yourself with mvn package

Screenshot