Just found this update for Fo-Cal with Lion & ML.
#3. "RE: Fo-Cal Apple Update" | In response to Reply # 0schadowrider Registered since 10th Mar 2012Fri 05-Oct-12 01:39 PM
Yes -- good news; thanks for sharing.
Although I would prefer to go with Fo-Cal over a new entrant into the lens/camera software calibration/testing market (they've got quite a bit of learning curve behind them already), I'm planning on going with the first outfit to come out with a Mac version (within reason -- needs to be a company with a decent overall reputation...).