Argon is a mobile web browser for iOS, and associated software suite, for creating augmented reality-enabled websites.
The Argon Project is research project at Georgia Tech. There have been two versions of Argon released for iOS (Argon at and Argon2 Isotope), and a third version is expected this year. Argon downloaded AR applications from web servers, created with a specialized version of KML called KARML. Argon2 adopted a more traditional approach to extending web functionality, exposing AR-specific APIs into Javascript, but otherwise allowing content to be created using the same technologies used to create other mobile websites. With Argon2, a javascript framework called argon.js was introduced, with the intent that this framework will eventually work on other web browsers as AR-specific technologies become more widely available.
Version 3 is currently in beta, and expected to be released this year. It will continue the shift toward cross-platform support of AR via the argon.js framework, and with version 3, the project will be open-sourced at http://argonjs.io