I wanted a web based equirectangular panorama viewer that worked on all devices. I found none, so decieded to build mine. This panorama viewer is based on Canvas, WebGL (threejs.org) & Flash (pan0.net) and should work on desktop & mobile (as long as you are using a 21st century browser ;) ).

It started as simple panorama viewer (for 'local' files) and then added support to show panoramas from flickr, 500px, imgur and files hosted on other servers.
If you think there is something missing or not working propperly, please, report an issue

Source is available at https://github.com/si7o/skybox