Bliss lets you book flights instantly and pay for them over time.
AwardCat solves the points puzzle by showing you how much a trip should cost in points, and how much it actually does cost in cash. If you want to book with points, one of their Award Experts will help you figure out the best way to do it. AwardCat says the service often pays for itself because they can often avoid airline fees you'd otherwise pay.
With Myles you can compare earning rates across affiliate marketing programs.
Programs supported currently:
USA - American, Delta, United, Southwest, JetBlue (Amazon.com) and Ebates.
India - Jet Airways.
Myles is an aggregator of these affiliate marketing program, targeting to increase customer loyalty.