I snickered a little because I know Visual Studio didn't have a version 1.0. Wikipedia identifies the first version as Visual Studio 97, which was at version 5.0. I remember before that there was "Microsoft Developer Studio 4.0" which came out around Windows 95, and could run on 95 or on NT 3.51. There was a Visual C++ 1.0 and a Visual Basic 1.0 released at different times. Meanwhile there were also the workhorses, Microsoft C and MASM. In those days, Borland and Watcom were real competitors to Microsoft for C and C++.