Stripe.com payment gateway.
Support local as well as remote storage(via tokenized customer data)
Support automatic capture
Follow development, submit requests and issues here: http://zignut.com/forge/projects/zstripe
Download, purchase here: https://zignut.com/order/cart.php?gid=8
WHMCS 4.5 or later(not tested with anything less, but may work, YMMV)
Stripe.com PHP libraries