WinFR File Renamer 4.10 is an efficient utility to do file renamings en masse simultaneously according to diverse criteria, in only one step. You can also preview the changes before doing them to make sure they are really the changes you want.
To each collection of files to be renamed you can apply diverse types of options: change the structure of the name, number them, replace/delete parts of the name, rename by date, put the first letter in capitals, etc.
It also offers you multiple functions to modify file attributes, create unified lists of files that meet determined requirements, obtain detailed information on an MP3 or JPG file, change the ID3 information, etc.