Vectorizer.io - Fast and easy way to vectorize an image online
avamaker - AvaMaker is a free online tool for making cartoon avatars and social profile pictures.
RasterVect - Professional raster to vector conversion program (vectorizer).
Avatar Maker - Create your own avatar online
vectorization.eu - Free online vectorization tool that can help you turn black&white and colored images into a vector format.
Boring Avatars - JavaScript library to generates SVG avatars based on text.