WebVR Experiments by Google - Easily build and share VR experiences on the web!
Apple ARKit - A framework to create Augmented Reality experiences for iOS
VeeR VR - Global VR video community
Facebook AR Studio - Facebook's developer platform for Augmented Reality
Supercraft - Build VR Sites with Your Hands
Vossle - Create Web-based AR Experience in Under 1 Minute. No coding required. No app required