Amex is the obvious one, assuming it's offered in your country. They are 1:1 transfer partners with KrisFlyer. There's also a thread in here somewhere about crediting Swiss miles to KrisFlyer, given they are in Star Alliance.
Google HHonors KrisFlyer (apologies as I don't have the links to hand and can't access the internet properly at the moment) and you'll see you can double dip miles and points plus various other promotions from time to time. Think HHonors also allow conversion of their points to KrisFlyer at some silly ratio. Don't quote me on that though, as I gave up on HHonors years ago when they made them worthless.
Last edited by Tennet1979; May 18, 2015 at 10:23 am
Reason: Typo