What does HackerNews think of freevms?
FreeVMS (0.3.17 release continued), the only working one
Language:
C
Actually someone did that: https://github.com/rroart/freevms
What about FreeVMS?
Its a shame FreeVMS never took off:
http://www.pvv.org/~roart/freevms.html https://github.com/rroart/freevms
A long, long time ago, there was a project called FreeVMS which aimed to do that. Sadly, it didn't get much further than booting.
Edit: https://github.com/rroart/freevms . It's definitely not big and professional like OpenVMS :-)