Currently in a basic, works-for-me state. I wrote it when I was unable to find any decent non-OS X tools for doing this conversion.
At current takes plist files as a arguments or input from stdin and outputs JSON to stdout. If you want pretty printing, pipe it to a pretty printer.
Does not support the full plist spec yet; will if I get a patch or if I find a need, or if I get bored enough to do it.
See LICENSE for licensing information
Author: kutani