Frontend framework used to create mobile hybrid apps
ionic is an open-source framework or program library and represents a modern solution for Front-End Development, also called user interface or (UI), Mobile Hybrid Apps. It is based on the well-known web standards HTML5, CSS, Sass and TypeScript.
The apps generated in this way, based on the above-mentioned web technologies, offer a user behavior that is very close to those of native applications, ie applications developed specifically for the corresponding mobile system, They can also be distributed and dis-continued via the providers app stores.
1: Source: http://ionicframework.com/present-ionic/slides/