IBM still builds mainframes in 2017 - yes. https://techcrunch.com/2017/07/16/i...cryption-to-lure-buyers-to-new-z14-mainframe/ This helps support what John Titor told us. Back in 2000 many people told me that John Titor was wrong... because in the future IBM would not build mainframe computers anymore. Well, here we are. John Titor claimed that he was sent back to the year 1975 to retrieve an IBM 5100 computer, that portable device was needed to help debug old IBM mainframe computers that in the year 2036 were still in use. OK, so the IBM 5100 had the undocumented ability to emulate programs in older languages used by IBM 360 mainframes, but the company was worried about how its competition might use this information, so they told no one.