Here is a collection of all the Sitefinity Stuff I have created.
Stripe Payment Provider
Send payments through Stripe.
The Stripe Payment Provider implements the Sitefinity payment provider so it sits alongside the built-in payment providers that come out of the box with Sitefinity.
Install the NuGet package to your Sitefinity web application where the provider will self register on the next application start. You can then use it alongside the other payment providers.