Off the bat, a name that comes to mind is Braintree (company) - they are not owned by any large corporation (to the best of my knowledge) and they are very well respected in the field of payments.
Which U.S.-based independent payment gateways are considered the best?
Which payment gateway lets a U.S. company charge customers in multiple local currencies, including those in Southeast Asia?1 ansWhat is a strong payment gateway option for a Saudi/Middle East startup besides PayPal?1 ansWhich payment gateway does Airbnb use to process payments?1 ansWho is behind Keenu, which claims to be Pakistan’s first payment gateway?1 ans