Ubuntu - The Flavors of getting off of Windows

http://www.ubuntu.com/

Ubuntu is most likely the best version of Linux to come out for business, second only to RedHat, which is quickly going the costly commercial route. It comes in Desktop and Server editions and comes with their promise. Which is both touching and very comforting for a business owner.

"The Ubuntu Promise

• Ubuntu will always be free of charge, including enterprise releases and security updates.
• Ubuntu comes with full commercial support from Canonical and hundreds of companies around the world.
• Ubuntu includes the very best translations and accessibility infrastructure that the free software community has to offer.
• Ubuntu CDs contain only free software applications; we encourage you to use free and open source software, improve it and pass it on."

It comes in many "Flavors" or custom versions.

http://www.xubuntu.org/ - This is for thin clients or older machines

http://www.kubuntu.org/ - Easily the most friendly version for those of you transitioning off of Windows

http://www.edubuntu.org/ - Perfect for kids, or schools.

All the versions come with a bevy of free software. So Give it a try!