http://download.moodle.org/
Moodle is Free, Open Source software (read our GPL licence).
Choose from the following official Moodle packages to install Moodle on your own server. Other ways to get Moodle include downloading via CVS, downloading via git and via a third-party integrated distribution such as Debian or Cpanel. We also have some special installer packages for Mac OS X and Windows.
Please help us promote education and develop Moodle further by donating to the Moodle project or by choosing one of the many Moodle Partners for added services such as hosting or consulting.