Featured Windows Download: Change folder and file names in bulk with Flash Renamer
Windows only: Shareware application Flash Renamer renames your files and folders in bulk.
Flash Renamer doesn't just flat-out rename; it can change the case (UPPER and lower) of file names, search and replace strings within file names, rename MP3s based on tags, clear read-only attributes and add counters to files that are related (like photos).
The unregistered version of Flash Renamer is not limited in any way whatsoever - except for the popup at launch reminding you that you haven't registered. A license will set you back $19.99 and buys you free lifetime upgrades and free tech support over email. Flash Renamer is shareware for Windows only. Thanks, Jeremy!