Openstax CNX

Openstax CNX is an educational content repository and a content management system that can be used to search for and remix learning modules. The modular nature of OpenStax CNX makes remixing or downloading specific pieces of content a seamless task. Because content can be submitted by anyone, OpenStax CNX features what it calls lenses which provide a mechanism for viewing vetted and endorsed contents. Lenses act as a preliminary quality control measure.