Django-oscar is an e-commerce framework for Django that allows any part of the core functionality to be customized. It has over 1,900 stars on GitHub and supports a variety of e-commerce features out of the box, including multiple product types, a large catalog, order processing, payments, shipping, and promotions. While the documentation is good, there are not many examples and customizing is slightly difficult. The framework is open source with over 150 contributors and has been used to support millions of products on live e-commerce sites.