The Stripe .NET Library by ServiceStack is a project that contains a Portable Class Library with a typed .NET client gateway for accessing Stripe's REST API. Used by servicestack.net to process merhcant payments and recurring subcriptions online. Features include: Small, typed, message-based API with DTO's and fits in a StripeGateway.cs; portable profile available supporting .NET 4.5, Xamarin.iOS, Xamarin.Android and Windows Store clients; custom declarative DTO's defined within the app to access new APIs, and aims to implement the mockable IRestGateway, which allows developers to return test data with a generic MockRestGateway.
BIPS, Bitcoin payment system, allows users to buy or sell online using Bitcoin digital currency. In addition to Bitcoin transaction-based apps and an e-wallet, BIPS provides an API that users can integrate with existing workflows and tools. Merchants can utilize Bitcoin currency alongside traditional currency transactions.