ReNamer is a very powerful and flexible file renaming tool, which offers all the standard renaming procedures, including prefixes, suffixes, replacements, case changes, as well as removing contents of brackets, adding number sequences, changing file extensions, etc. For advanced users, there is a PascalScript rule, which let users program their very own renaming rule. Program allows you to combine multiple renaming actions as a rule set, applying each action in a logical sequence, which can be saved, loaded, and managed within the program. In addition, it has an ability to rename folders, process regular expressions, Unicode capable, and supports variety of meta tags, such as: ID3v1, ID3v2, EXIF, OLE, AVI, MD5, CRC32, and SHA1.
I don’t really have a lot to add beyond their own description. Changing files in a directory to follow a naming rule or server set can be made a much simpler task with this tool.