Windows Pager (April Fool's)

I remember back in the days where cellphones were extremely rare, and even those in existence were large enough to function as those hammers used to crack the shells of crabs when you are indulging in a little bit of seafood. As for smartphones and tablets, they were not even invented just yet. Pagers, however, are a very different thing, as it proved to be hugely popular in getting the attention of the pager's owner.

Ubergizmo, Windows Pager (April Fool's)