[dangrossman]

Check out Spreedly. https://spreedly.com/

Integrate once and your app/site now supports 71 different payment gateways. You can test and swap them just by changing one token in your code.

Here's the supported gateways, including 8 in Poland: https://spreedly.com/gateways

[munimkazia]

It supports a few in India too.. Impressive. Though it is quite pricey.