Smile Tracker uses the clmtrackr javascript library for emotion detection by Auduno, git it here. At time of writing this is the cutting edge of browser based emotion detection.

Make sure your face is well lit, without a light source behind you, for the best results. Even with the best face tracking, Smile Suggest still struggles with beards. Beardist.

See other things I've made here.

Or download Smile Suggest now.