Solaris 10 free \*after\* 30 days
By John Clingan on Feb 27, 2005
Over on OSNews there is a thread on a "Free 30-day Subscription to Red Hat Enterprise Linux 4". You can use Solaris 10 for 30 days free too. And another 30 days. And another. And so on. Solaris 10 is free. No need for a CentOS or WhiteBox equivalent. If you don't want support, you don't have to pay for it. If you want support, then pay for it (and it's very affordable).
The icing on the cake? When you change your mind on the need for support, you don't have to install new bits and deal with down time. It's as simple as writing (or not writing) a check. As your business needs change, your OS/distribution doesn't have to.