https://github.com/emotionLoop/visualCaptcha : anything of use? Requires Flash it seems; shows 5 icons (like clock, woman, camera, sunglasses, key) and calls one by name asking for it to be clicked. The name could be translated but I have no idea how such a thing can work, probably most protection is given by the inability of spambots to do anything in Flash?
Topic on Talk:CAPTCHA
Yes this could be a good alternative i just experimented with it on my local computer and gave a thought included it on my proposal. :)