I fail to see how this is interesting. There is already a well known alternative to Cygwin: MinGW/MSYS. Also, anyone looking for such a thing can find it with five minutes of googling.
I've been using GNU-Win32 for years; it's generally solid, and the CHM docs are nice, but there are some issues with it. But last time I was looking for a replacement, I couldn't find one! Gow looks like it might be just the ticket.
As for MinGW/MSYS, last I looked, MSYS looked a bit incomplete for my purposes. I don't have any interest in or need for the MinGW gcc and autoconf bits, which tools looked to be its main advantage over GNU-Win32.
I thought the same. Then I found that Gow is shipping way older versions for many binaries compared to GNU-Win32, and its patch.exe causes UAC prompt for non-administrators.
GNU-Win32 is solid, integrates natively, and is good enough for deployment purpose.