You look like another C#/MS reasonless fanboi, should I add you to the microtrojan list rightaway?
I don't use C# crap, but use Java, so Sun did a hell a lot better job because its everywhere, unlike .net - which is microsoft only. No, MONO is NOT .net.
Regarding Digia, yes, they do, they offer LGPL patent-free toolkit official for every single platform, which relies on solid patent-free proven and acknowledged language.
When I used Microsoft in the past, it felt like my hands are covered in dirty sh!t.
Right now, when I discuss MONO with you, I feel the same way.
No, none of the listed technologies was invented or implemented by MS.
TCP/IP - Stanford/UCL.
DNS - SRI/Stanford.
continue by yourself
When I "discovered" Mono, I found a crapload of dlls and exe in my system, weighting more than 300MiB and being much slower even than Python.
I gladly associate myself with cautious and aware people, who remove the crap known to cause dangers to freedom, without even arguing or going into compromises.
If your puppet master microsoft runs you, that's not my problem, I am not a puppet.
The clone is set to attack non-microsoft platforms by means of infiltration and integration - without bringing original technology in crossfire, should something go wrong.
It is also completely dependent on .net standards, it is fueled by "happy opensource fools" workforce and never implements something that breaks "compatibility".
Unlike the old case of CP/M and its microsoft clone - QDOS , the patent system now works and will prevent clone from replacing original solution via higher usage rate.
When microsoft desires so, it will pull on the wire and MONO will back off.