The PayPal Pro Reference Payments gateway helps with PCI compliance.
Quantum Vault is the remote storage version of Quantum Gateway.
The SagePay payment gateway module works with both US-based and UK-based accounts.
SagePay Form sends your customers to the Sagepay website to enter payment details.
The SagePay Tokens v2 payment gateway module is available in WHMCS.
The Stripe™ payment gateway uses a tokenized storage system to submit credit card information.
The Stripe™ ACH payment gateway module is available in WHMCS.