If you were to log in, you'd be able to get more information on your fellow community member.
MacOS X is a pretty good emerging alternative combining UNIX underlayment for those (like me) who want to easily use the tools there and have access to burgeoning free software. It's stability still seems less than Windows 2000 at the time of this comment. Being able to crack Microsoft Office docs is a necessary evil in my life and was flagged as reason of Linux being a non-starter - but OpenOffice (openoffice.org) nicely solves that - and it works on Windows and is now in alpha for MacOS X. That leaves Photoshop - which is only supported on MacOS and Windows - which pretty much locks me out of Linux for now. So, I am attempting to move my work environment to MacOS X - but lack drivers for my film scanner at this point (and Epson printer drivers for MacOS X have some limitations). So I use both for now, but am looking forward to a day when I can leave my Windows PC behind.