The plug and play toolbox allows you to easily browse and run scripts and plugins within your browser.
No need for complicated installs, simply browse click and play.
When you restart max non of the tools exist, only when you run them, so there's no chance you can get any startup errors or slow-downs.
To see the toolbox in action check the video link below :-
http://youtu.be/ZKMw1UtcOjU
Check out the site below for download information.
http://www.3dsmax.ninja