“Co-developed by IBM and Microsoft, it was intended to replace DOS, the aging software that then powered most of the planet’s microcomputers. It never did. Instead, Microsoft’s Windows reinvigorated DOS, helping to end IBM’s control of the PC standard it had created. By the mid-1990s, IBM had given up on OS/2 – a major step in the company’s slow-motion retreat from the PC industry, which it completed in 2005 by agreeing to sell its PC division to China’s Lenovo. But while OS/2 never truly caught on, it’s also never gone away. Even if you believe that you never saw it in action, there’s a decent chance that you unwittingly encounter it at least occasionally to this day.” The last time I took a look at eComStation was way back in 2007.