Cool! An open source (V14) or freeware (normal) analysis. With tutorials.

General CNC CNC Routers
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Cool!
An open source (V14) or freeware (normal) #FEM analysis.
With tutorials.
Reading STEP and STL.

I didn’t know about this.
http://www.z88.de/

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I tried this last summer. Seemed pretty good apart from the post processor displayed strange units. I was testing with a 10 cube with 10 units of force to prove modulus = stress / strain however the results were always unexpected. I will try it again soon to see if newer releases are more useable.