Most Popular Credit Card Gateways?

Nov 19, 2007 at 2:00 AM
What credit card gateways are most popular to the best of your knowledge? I'm thinking about these as major players:

*Payflow Pro
Nov 25, 2007 at 3:40 AM
Just added LinkPoint Connect to the source code. We've got a Protx processor hanging around somewhere that I'll try to dump into the source soon.
Jan 13, 2010 at 3:56 AM

Not sure if this project is still active, but I'd love to see PayPal's Website Payments Pro included in the project if it is.