PayPal is pretty easy to use, and you can let them do however much you want: The whole shopping cart or just the chargeout. Their various services have a bunch of APIs, from Java libraries to pure HTTP. You can do recurring billing with PayFlo Pro, and you can catch receipts with instant payment notification. The best part is that you don't have to store CCs locally.
― libcrypt, Tuesday, 22 May 2007 02:07 (nineteen years ago)