but i was wondering, is there was any software similar to mp3tag for tagging and renaming word and pdf documents?
Do you ask for a software mass changing properties in Word or PDF-files under Windows?
This is a list of renaming tools:
I use the Multi Rename option of FreeCommander [available in it after pressing CTRL+M]
It is a very powerful feature - plus it is available in a piece of software than I already used instead of Windows Explorer