The DAS_Bisector maxscript is a custom scripted LookAt Constraint in which the source node looks at 2 other objects but always perfectly bisects the angle between them. The common 3ds Max LookAt Constraint has the source node looking at the midpoint between the 2 targets which is not the same if the targets are different distances away from the source node (see the image below). This is the script you need if you are creating heliostat solar panel arrays or things that always need to stay angled precisely between 2 objects.

A revision to the original Time Slider Control Maxscript (called "Time Bandit" in-house). The new "Time Bandit" Maxscript not only allows you to quickly and interactively control the timeline range with precision like the old script but adds the ability to save preset time ranges and recall them later. The ranges saved within the script are also saved with the scene. As with the previous version, the script still has a low profile so it can stay open while you work without taking up valuable screen space.

FumeFX Dimension Copy

This macroscript takes a selected Box and then copies it's dimensions and creates a Fume grid with the same area. I got sick of having to drag out a real-world scale Box and then dragging out a fume grid to match. This just takes the extra step out of it.

This is a simple tool to create stairs using 2 inputs (number of steps, stairs width)
It is my first trial to create a tool, it also apply 2 different VRay material, to the stair for further modification and hold it in one group.