potrace - Open source program that transforms bitmaps into vector graphics.
ProntoForms - ProntoForms is a mobile business solutions application, converting paper forms onto any tablet or mobile device.
Vectorizer.io - Fast and easy way to vectorize an image online
mHelpDesk - mHelpDesk is a mobile field service management software.
Autotracer.org - Free online image vectorizer
Forms On Fire - Forms On Fire provides a complete, customizable mobile forms and workflow system that is reliable and secure, works offline or online.