When It was announced that Magics would no longer be supported, I took the option of obtaining a perpetual license. I don't know how long I will be able to continue to use it, since it is licensed to a particular piece of hardware, but I do currently use it on every part I analyze.
Magics was actually a repackaging of a third party product, Magics, by Materialise.
http://www.materialise.com/materialise/view/en/2408555-Magics.html
If you Google Moldflow STL Magics you may find something that will work for you.