Payment sites:

http://www.allpay.net/
https://www.merchantinc.com/
http://www.worldpay.com/
http://www.ebs.in/
https://www.zaakpay.com/
http://www.ccavenue.com
http://www.authorize.net/
https://www.2checkout.com/
http://www.virtualpayonline.com/
http://www.sagepay.com/
http://www.paypoint.net/
https://www.paygate.co.za/
http://www.paysimple.com/
http://www.paymate.co.in
https://www.payu.in
https://www.gogopay.com/
https://www.ribbon.co/
https://www.wepay.com/
https://stripe.com/