Rename-It! can rename multiples files, that can be in different folders, at once. Rename files in seconds via the Explorer's context menu (Rename-It! incorporates in the Shell). Before renaming files, Rename-It checks the files' names. The renaming itself is done by filters: Search & Replace (replace a string by another and support regular expressions or wildcards), Case (make the file name uppercase, lowercase ...), Crop (only keeps a part of the file name), and ID3 Tag (reads the MP3 files ID3 Tag's info).
Rename files using regular expressions
Perform both file renaming AND text replacing
Rename File 3.17
Rename File - Rename Files, Batch Rename File
Powerful Bulk File and Photo Renamer