HTTPS SSH

UnixFTW

Read: UnixForThe<Windows>

When was the last time you fret after keying out "ls" on a windows command line.
Checkout the source, point your environment variables, and voila! Use linux commands on Windows.

EDIT:
Now Defunct. PowerSHELL does this, and much more!

##Supported commands:
ls
clear
vi - with notepad++ installed