Object renamer is a renaming script for 3ds Max from developer Chuggnut. The developer describes it simply as a classic object renamer, and that name captures its scope: handling the renaming of objects in a 3ds Max scene.
The script appears in the scriptspot library and is listed here at version 2.3.5. This catalog lists it as free, though you should check Chuggnut's developer page for downloads and current licensing terms. The developer link points to chuggnut.com, the original home of the release.
If you need to rename objects in 3ds Max, that's the task this script addresses. The description stays brief, so the developer's page is the best place to look for any additional usage notes. For anything beyond version 2.3.5, the Chuggnut site is where new releases would appear.