Chicago was the code name for Windows 95. Cairo was a dropped (and ambitious) reworking of NT (at the time). https://en.wikipedia.org/wiki/List_of_Microsoft_co

Chicago was the code name for Windows 95. Cairo was a dropped (and ambitious) reworking of NT (at the time). https://en.wikipedia.org/wiki/List_of_Microsoft_codenames https://en.wikipedia.org/wiki/List_of_Microsoft_codenames