Canonical is the 65-employee start-up behind a popular version of Linux called Ubuntu. The company is betting that it can win a place in the market using a strategy that dominant Linux seller Red Hat has dropped. Red Hat offers two versions of Linux: Fedora Core and Red Hat Enterprise Linux. Fedora Core is free, but relatively untested and unsupported by Red Hat, while RHEL is supported and certified, but must be purchased. With Canonical’s Ubuntu, however, the free and supported versions are identical – the approach Red Hat abandoned in 2003.