Is there anything like Magic Lantern for Nikon cameras?

I just got an old 50mm f/1.4 manual focus lens for my Nikon D5100.It is really tough achieving focus even with live view. I heard from another friend that in Canon cameras if you install MagicLantern it would give a 10X zoomed video feed of the subject on one corner of the screen for easier focusing. I was just wondering whether anything like magic lantern is available for Nikon cameras.

I just found this group.
http://nikonhacker.com/

If it exists anywhere, it might here. I leave the fun to you to find.