Program that simulates magnets and how they interact

[s09]

Hi guys. I got a unique (non-homework) assignment. I'm trying to model the manner in which magnets interact with each other and the forces that they exert on each other when near one another. I would LOVE to do this in an application without investing the time and effort into a full-blown model. Is there such application?

Ideally, it's open-source, but a commercial app will do just fine.

 

[s09]

Just noticed that this should be better moved to the computing section. Could someone please move it there?

 

[JaredJames]

From a previous thread: https://www.physicsforums.com/showthread.php?t=162013

This software is recommended by berkeman: http://www.quickfield.com/free_soft.htm