Is this different from Unix Utils? Every gig I've ever been on where I'm forced to use a Windows box, first thing I do is load the Unix Util exes into some directory and add it to the path. http://unxutils.sourceforge.net/
https://github.com/bmatzelle/gow/wiki/executables_list
https://github.com/bmatzelle/gow/wiki
Kept up to date, every .exe (once installed) is self-contained (no external .DLLs) and portable to just about any Windows box I've run into.
No Cygwin or MinGW installation required.
Bash is actually available in the list (albeit an older version) if you really wanted "bash on Windows"
The initial github commit has comment "Initial import of the code I developed back in 2006. Nothing has been changed since then.", and nothing has been changed since that commit (with exception of docs, Gow.nsi and gow.vbs files).
They are complementary.