Bread Crumbs Cloner is a cloning and marking script for 3ds Max from MATSCRPTART. It's described as a simple tool meant to help animate walks, runs, slow ins, slow outs and similar motion. The script clones or marks an object and offsets the clone an equal distance from the original as from another specified object, keeping it on the same vector.
Version 3 adds the ability to capture and mark distance from any position. You can also divide or multiply that distance by any amount, then set the clones or markers to those distances.
The script was written in 3ds Max 8 and is listed here as free. It ships as a compressed download named Bread Crumbs 3.zip. For current licensing and the latest details, check the developer's page.