[Update: ZEVO web site is back up after prolonged outage] A former Apple engineer who worked on ZFS integration in Leopard and Snow Leopard has debuted a new software program to implement full ZFS support on the Mac. The alternative disk formatting, which offers a more efficient way to utilize disk space and actively prevents file corruption among other benefits, was touted by Sun Microsystems and considered by Apple as a possible replacement for HFS, but ultimately abandoned due to licensing issues.