Currently, we integrate with Authorize.net, Stripe, PayPal, and 2Checkout.
More payment processors and gateways will be added based on user requests. If you have a specific payment processor/gateway in mind other than the ones mentioned above, we welcome you to suggest/request it here:
We also support Offline Payments -- meaning your customers can give you the funds manually (e.g. local bank transfer, check, cash). You can read the details how does offline payment work here.