the popular Dean Edward's packer, as well as deobfuscate scripts
The source code for the latest version is always available on github, and you can download the beautifier for
local use (zip, tar.gz) as well.
Formatting from command-line
Fabio Nagao has written some tips for the gEdit users, among them he tells how to integrate the beautifier into the editor.
Other nice things
Some of you have expressed an esoteric wish to thank me for the beautifier financially, and I gladly agree to that.
As the beautifier is — and always will be — completely free and open, donating is a wonderful thing to do and it will probably make you feel good and warm inside.