The invention of the transistor, the earliest computing machines, the World Wide Web and its evolution into the internet marked the high points of this part of the digital revolution. These inventions changed the way people worked, studied as well as sought information and of entertainment. These inventions transformed entertainment, socializing, commerce, politics and studies in ways that would hardly be conceivable a generation back. The next major stage in the digital revolution was the arrival of mobile devices, starting with the cellphone in 1973. Eventually this led to the development of tablets and smartphones where a significant feature is the integration with internet as well as online products and services. This has, in turn, opened up the scope for business, networking – both social and professional – and entertainment as never before. Not surprisingly a new breed of technology experts and entrepreneurs has sprung up to take advantage of this dynamic new medium. Greatest Digital Revolutionaries offers a brief glimpse into the work, achieve-ments and future plans of some such individuals who have significantly contributed to the fields of ecommerce, information technology and related businesses.