How to: E-Commerce and Payments
* [nopCommerce](https://github.com/nopSolutions/nopCommerce) - Free open-source ecommerce shopping cart (ASP.NET MVC / ASP.NET Core MVC ) with a vast community and a market place full of new features, themes and plugins.
* [GrandNode](https://github.com/grandnode/grandnode) - Multi-platform, free, open source ecommerce shopping cart based on ASP.NET Core 2.1 and MongoDB derived from [nopCommerce](https://github.com/nopSolutions/nopCommerce).
* [PayPal](https://github.com/paypal/PayPal-NET-SDK) - .NET SDK for PayPal's RESTful APIs.
* [SimplCommerce](https://github.com/simplcommerce/SimplCommerce) - Super simple ecommerce system built on .NET Core.
* [Stripe](https://github.com/ServiceStack/Stripe) - Typed .NET clients for stripe.com REST APIs.