Poker Tracker Omaha is basically the same as PT3 Hold'em except less flashy and designed for Omaha and Omaha-8 (and cheaper). It's on the Poker Tracker homepage. Should be pretty easy to find. Not sure if there is any other software out there.
And best yet, if you have any PokerTracker version of any of their software then you get a discount on the next version. Saved me a few bucks when I bought PTStud for tracking Razz (since I have PTHoldem already).