ReNum

Short:        Sequential filename set renumbering utility
Author:       di2emias@ida.his.se (Emil Astrom)
Uploader:     di2emias ida his se (Emil Astrom)
Type:         util/misc
Architecture: m68k-amigaos

ReNum v2.1 is a program that renumbers sequences of files (usually frames
of an animation) between different formats. For example File0, File1, ...
to File000, File001, ... and vice versa. A great time-saver if you're
using several different animation programs.

The program sports a GadTools-GUI and some intelligence (sort of).