Other?

[amadeus2k8]

I have a spare Laptop I like to play with.

I have installed the following operating systems on it [not all at once], what other alternatives are there other than the ones lsited???

Windows 95, 98, XP, Vista
Windows Server 2003
Linux [Fedora, Ubuntu, XUbuntu, KUBuntu, Mandriva, Debian, SUSE]
Solaris
Hackintosh [Apple Mac OS X Leopard hack]
UNIX [FreeBSD]

What other Desktop Operating systems are there that I can download and install preferrably free, but not an issue . . .

Command Line or GUI based either is fine, [I like CLI Operating Systems]

 

[Squashman]

You got most of them covered.
You could try SkyOS and ReactOS.

I remember a couple of years back some guy installed like 40 plus operating systems on his computer all at once using the XOSL bootloader. They had him on The ScreenSavers. Don't recall all the other operating systems he put on.

The beta for Windows 7 is going to be available pretty soon. You could sign up for the Beta once they have that available.