Jerry Levasseur at The Big Lean Simulation Library, LLC e-mailed me to let me know that they have released a free version of their Lean simulation library.
It is released under a Creative Commons Attribution-NoDerivatives 4.0 International License, so you may use it for commercial use.
See Jerry's website for more details.
The downloadable simulation library can be found on the free download tab on the site.
Here's a video sample from the site to whet your appetite: