The PayPoint.net (SecPay) payment gateway module is available in WHMCS.
SagePay Form sends your customers to the Sagepay website to enter payment details.
Skrill processes credit card, local, and bank payments seamlessly in more than 40 currencies.
This module allows you to process Skrill 1-Tap repeat payments and recurring payments.
This module allows you to use WorldPay for one-time invoices.