To sum a rename program to the list I want to contribute with the program I use and I think it is great Ant Renamer
This are the features:
This program can rename large amounts of files and folders in few clicks. It only modifies files/folders names:
Replacing character strings by others
Inserting a character string
Deleting several characters
Name creation with mp3's Tag (ID v1.1)
Name creation with file's last modified date and time
Random names creation
Case change (uppercase, lowercase, first letter of each word in uppercase, ...)
Take names from a list/file
Use of EXIF info
Availble in several languages: English (default), Belarusian, Catalan, Chinese (simplified & traditional), Croatian, Czech, Dutch, French, German, Greek, Hungarian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Slovak, Spanish, Swedish.Unicode file names are supported
, so it is possible to rename without problems files that have names containing characters from Japanese, Chinese, Arab, etc.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
Tested successfuly under various Windows versions, from 98 (with a few updated system files) and NT4 (SP4 required) up to current ones (Windows Vista, 7 and 8 ).The program is Open Source.