You're correct that NT3.5 was out before Win95. That said, checking Wikipedia, OS/2 was out before either of them (April '87) whereas WinNT 3.5 was July '93 and

You're correct that NT3.5 was out before Win95. That said, checking Wikipedia, OS/2 was out before either of them (April '87) whereas WinNT 3.5 was July '93 and Win95 was August '95. Sidestepping chronology that is dating us massive, the productivity win of having minicomputer/workstation OS features available for microcomputers in both OS/2 and WinNT I just cannot overstate. Teh suck of rebooting a DOS machine multiple times a day just to do work is a memory best long forgotten.