Where you can download new operating systems for free?

Linux is a great free OS, some parts are a bit more complicated than windows but it only takes a bit of getting used to. Developers can create their own versions of Linux - browse them all here .linux.com/directory

The OSs below are both distributions of Linux.

Ubuntu - this is one of the most popular free OSs - .ubuntu.com/
ChromeOS - OS in which, basically, everything is done in your web browser - getchrome.eu/download.php