[ansible]

I was not aware of this. It is not open-source though, and it is really just for research purposes.

Its actually quite impressive how much they've implemented, though it is still a small fraction of the software you'd need to run an actual cell network.

[mietek]

It's not just for research purposes, as it's sold by Amarisoft as Amari LTE 100:

http://www.amarisoft.com/?p=amarilte

It's also not "they", as it's been developed by a single programmer. Certainly, Bellard is no ordinary programmer, but this should still give some perspective to your claim of the millions of dollars required for development.