Scoping this list was more difficult than finding the items - I've tried to keep to electronic devices, the first transistor radio rather than the First radio, and products that were actually sold such as the Dycam Model 1 digital camera rather than the Fuji DS-1P.My favorite here is the first web server, it was one of 2 NeXT machines bought for Tim Berners Lee and nobody knows which one (they both survive) was the first to serve a web page. The NeXT was a beautifully designed machine that Steve Jobs built to show what a personal computer should be, after being ousted from Apple. Berners Lee specifically needed a NeXT to be able to build the web and had difficulty getting approval.You could argue the first web server is merely the machine that happened to perform a first role, rather than a device designed for a purpose, but the fact that Berners Lee needed the NeXT to be able to develop the web quickly and elegantly, shows that sometimes the development of the first example of something predates it actually being used for the pioneering purpose for which it is suited.