Cairo (operating system)

Microsoft Cairo
Cairo Server login screen, based on Windows NT 4.0 Server (1175.1)
DeveloperMicrosoft
Working stateHistorical
Released to
manufacturing
Cancelled
Kernel typeHybrid (NT)
Official websitewww.microsoft.com

Cairo was the codename for a project at Microsoft from 1991 to 1996. Its charter was to build technologies for a next-generation operating system that would fulfill Bill Gates's vision of "information at your fingertips." Cairo never shipped, although portions of its technologies have since appeared in other products.