GoCardless automates electronic direct debit payments.
iDeal via Mollie is a payment gateway in WHMCS.
The inpay payment gateway module is available in WHMCS.
The Modulo Moip payment gateway module is available in WHMCS.
The NoChex payment gateway module is available in WHMCS.
The PagSeguro payment gateway module is available in WHMCS.
The Payment Express payment gateway module is available in WHMCS.