Scope

I need to know which integrations are allowed on the Chargebee site.

What are the payment gateways compatible with the Chargebee site? 

The list of third-party integration available on the Chargebee site can be checked by navigating to Settings -> App. This doesn't include the payment gateways. To know about the list of payment gateways compatible with your Chargebee site, navigate to Settings -> Configure Chargebee -> Payment Gateways -> Add a gateway.

To know more about each of the third-party integrations refer to this link

Note: some of the third party integrations are plan specific. Please see the plan and pricing page to know more

You can add more than one type of payment gateway to your Chargebee account. To know more about payment gateways refer to this link