The PayPal Website Payments Pro payment gateway module is available in WHMCS.
The PayPoint.net (SecPay) payment gateway module is available in WHMCS.
The Payson payment gateway module is available in WHMCS.
Planet Authorize is a credit card merchant gateway that is integrated with WHMCS.
The PSIGate payment gateway module is available in WHMCS.
Quantum Gateway supports 3D Secure for Visa® and MasterCard® transactions.
Quantum Vault is the remote storage version of Quantum Gateway.