Gow is a lightweight alternative to Cygwin, it uses a convenient Windows installer that installs about 130 extremely useful open source UNIX applications compiled as native win32 binaries. It is designed to be as small as possible, about 10 MB, as opposed to Cygwin which can run well over 100 MB depending upon options.

Features:
1. Ultra light: Small, light subset (about 10 MB) of of very useful UNIX binaries that do not have decent installers.
2. Shell window from any directory: Adds a Windows Explorer shell window (screenshot) so that you can right-click on any directory and open a command (cmd.exe) window from that directory.
3. Simple install/remove: Easy to install and remove, all files contained in a single directory in a standard C:\Program Files path.
4. Included in PATH: All binaries are conveniently installed into the Windows PATH so they are accessible from a command-line window.
5. Stable binaries: All commands are kept up to date but also as stable as possible.

Application Highlights:
1. Shell scripting: bash, zsh
2. Compression: gzip, zip, bzip2, compress
3. SSH: putty, psftp, pscp, pageant, plink
4. Download/upload: cURL, wget
5. FTP: NcFTP
6. Editing: vim
7. Text search/view: grep, agrep, less, cat, tail, head
8. File system: mv, cp, du, ls, pwd, rmdir, whereis
9. Development: make, diff, diff3, sleep, cvs, dos2unix, unix2dos

The license of this software is Free, you can free download and free use this system utility software.