KAUSTAV DAS MODAK is an open-source evangelist by passion. He co-founded and serves as the CTO for Applait, an organisation that develops useful products and provides enterprise solutions on Firefox OS. He volunteers as a Mozilla Representation and co-ordinates community evangelism activities of Mozilla in India. He is the Training Lead in the community team that helped bring Firefox OS to India. So far, he has co-founded another start-up, CodeBinders, in his early years, and has been a Developer Evangelist for FusionCharts. He blogs at kaustavdm.in and tweets from @kaustavdm.