AR.js

AR.js Pros : Very Fast : it runs efficiently even on phones. 60 fps on my 2 year-old phone! Web-based : It is a pure web solution, so no installation required. Full javascript based on three.js + jsartoolkit5 Open Source : It is completely open source and free of charge! Standards : It works on any phone with webgl and webrtc Creator : https://twitter.com/jerome_etienne

Also recently he also made Tango Compartability for AR.js + @aframevr today !

Cool, does this framework have access to the inertial sensors on phones like accelerometer and gyroscope?