#3 America Online

Steve Case founded AOL (American Online) the commercial ISP, introduced millions of people to internet and chat-rooms; the new experience unveiled. In 1989 when speed in kbps was norm, AOL brought in broadband, and started new online era. AOL led to CompuServe, which led to Web, which led to social networks like Facebook.

#2 Apple Newton

Apple’s Newton was first personal digital assistant (or PDA). Debuted in 1992, it changed the way a user managed personal data, and defined how convenient computer automation should be, making available the data whenever we wanted, in a portable user friendly device.  

#1 Wi-Fi Home Router

Before the advent of Fastwed, an Italian ISP Wi-Fi in 2001, building networks with cable modems was too complex, and expensive. Now Wi-Fi has turned into a domestic necessity of households like a water heater or cooker.

And also,

The Web

Tim Berners-Lee invented HTTP, HTML, and the URL in 1991. It was something which changed forever the way the information was exchanged, led to World Wide Web era, something indispensible in today’s personal or business life.