Stripe is the only natively supported payment provider with Ghost. We're aware that not everyone has access to Stripe, and we plan to add further payment providers in future.

In the meantime, it is possible to create new members via an external provider, such as PayPal or Patreon. You can also set up any third party payments system and create members in Ghost via our API, or using automation tools like Zapier.

Accepting member’s payments using PayPal
Embed payment buttons from PayPal directly into your content in Ghost and collect payments for your membership content.
Accepting member’s payments using Patreon
Connect your Patreon account to Ghost and give your supporters access to members-only content on your custom Ghost site.