Hamilton C Shell
Recreates original Unix C shell and utilities fully from scratch, adds many enhancements, for Windows 95/98/Me/NT/2000/XP, OS/2.
Porting Unix to Windows NT
By David G. Korn;, 1997, USENIX paper (abstract, full text requires membership) describes AT&T UWIN project.
PW32 the POSIX-over-Win32 layer
Implementation and subset of POSIX/Unix API for Win32 systems. Focus: efficiency, full platform coverage, with good support for low-end Win9x systems. Based on DJGPP runtime librar…
Unix for WINdows
U/WIN is software that lets Unix programs be recompiled and run on Win32 systems: Windows 95-98-Me/NT-2000-XP. Descriptions, documents, downloads.
Windows NT Services for Unix
Microsoft product suite; has list of features, system requirements, evaluation tools, common questions, support, related books/products, pricing.