Decent piece in today’s SF Chronicle summarizing the various players, big and small, chasing desktop search. We have, of course, Blinkx, X1 (misspelled in the article as X-1), and Copernic, among others.
So who is best? Sadly, the article settles for the journalistic standby of saying “Wait ’til Microsoft shows up”, suggesting that the big software machines at Google and Microsoft will almost certainly flatten the market, leaving little for Blinkx, et al.
My view? I long ago gave up on Copernic (overkill), migrated through X1 (too quirky, too costly, and no unified search view), and have ended up blinking fondly at Blinkx.