Excellent app from the creator of Find Any File (my favourite file search app for Mac).
I really miss Apple's standalone Property List Editor, and resent launching the whole clunky Xcode suite just to edit one little plist file. This brilliant app fills the gap beautifully and has a few extra tricks.
NB I have no connection to the developer, apart from the fact that I happily donated for FAF in the spirit of supporting the shareware I value.