I don't know if this as a possible solution and I haven't tried it.

3DNP - It uses still images so you can render stills or grab frames from an animation. You should be able to annotate the images with comments etc. It is supposed to work in any browser.

"3DNP is a JavaScript, that preloads a series of images into memory and simulates a 3D view by  analysing the user's mouse movement and quickly swapping the images."  http://www.thoro.de/page/3dnp-introduction-en

 

 

 

 

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