What Is Web 2.0 Pages: 1, 2, 3, 4, 5 7. Rich User Experiences As early as Pei Wei's Viola browser in 1992, the web was being used to deliver "applets" and other kinds of active content within the web browser. Java's introduction in 1995 was framed around the delivery of such applets. JavaScript and then DHTML were introduced as lightweight ways to provide client side programmability and richer use