unxutils

A collection of GNU utilities ported to the Win32 platform (Win9X and WinNT). Unlike cygwin, they do not require a special library to run; they can be used standalone and in .BAT files.
These tools are an excellent introduction to "The Unix Way" for Windows-only users. All are command-line tools and make full use of pipe streams (| > <). The following GNU packages are implemented (as of 2001.07.07):

• bc-1.05
• bison-1.28
• bzip2-0.9.0b
• diffutils-2.7
• fileutils-3.16
• findutils-4.1
• flex-2.5.4
• gawk-3.0.3
• grep-2.3
• gsar110
• gzip-1.2.4
• indent-2.2.6
• jwhois-2.4.1
• less-340
• m4-1.4
• make-3.78.1
• patch-2.4
• recode-3.6
• rman-3.0.7
• sed-3.02
• shellutils-1.9.4
• tar-1.12
• textutils-2.0
• wget-1.6.0
• which-2.4

Extra tools: pclip and gclip pipe the stdin/stdout to and from the Windows Clipboard for better integration with GUI applications.

The author is K. M. Syring and the homepage is http://unxutils.sourceforge.net/