Fosspay is a free-software web frontend for receiving donations and subscriptions, similar to Patreon or Liberapay, but which can be hosted on your own server. It can also interface with Patreon or Github Sponsors to aggregate all your donations. Stripe Setup Fosspay uses Stripe as a payment processor. You first must go to their website and create an account. Once you set everything up, you can go to https://dashboard.stripe.com/account/apikeys and get your “Publishable Key” and “Secret...