PathPicker accepts a wide range of input -- output from git commands, grep results, searches -- pretty much anything. After parsing the input, PathPicker presents you with a nice UI to select which files you're interested in. After that you can open them in your favorite editor or execute arbitrary commands.
FYI, it looks like a version bump was forgotten for the 0.9.5 release, e.g.
This is because:
https://github.com/facebook/PathPicker/blob/3670d02dbcb9ff232b1c8cbeb5468657dd582cf5/src/version.py#L6