@xaccrocheur
Geek Gadgets is a port of many GNU apps and utils for AmigaOS. It's similar to CygWin, perhaps not as advanced. I personally don't like CygWin. Like someone said; "It combines the user-friendlyness of UNIX with the stability of Windows" :-)
Among the GG apps is a port of Emacs. But to be honest, the Amiga versions of Emacs and Emacs-clones are quite bad. They're not nearly as good as the Emacs for X (not XEmacs!) and Emacs for Win32 versions.