Any apps or extensions for editing bookmarks?

There's no convenient way to do things like search and replace on Safari's bookmarks. You have to edit bookmark entries one at a time. Very time wasting. Are there any apps or extensions to accomplish that?

 

Sure. Try replacing a few dozen links because a domain name changed or they changed forum software. It's a pain. You can't directly edit Bookmarks.plist either because it isn't a convenient text file, and directly editing it breaks it.

 

That's odd, because when I edited it in Emacs and restarted Safari, the Bookmarks menu showed as empty.