| Microsoft Cairo | |
|---|---|
 Cairo Server login screen, based on Windows NT 4.0 Server (1175.1) | |
| Developer | Microsoft |
| Working state | Historical |
| Released to manufacturing | Cancelled |
| Kernel type | Hybrid (NT) |
| Official website | www |
Cairo was the codename for a project atMicrosoft from 1991 to 1996. Its charter was to build technologies for a next-generationoperating system that would fulfillBill Gates's vision of "information at your fingertips."[1] Cairo never shipped, although portions of its technologies have since appeared in other products.
Cairo was announced at the 1991MicrosoftProfessional Developers Conference byJim Allchin.[2] It was demonstrated publicly (including a demo system for all attendees to use) at the 1993 Cairo/Win95 PDC.[3] Microsoft changed its stance on Cairo several times, sometimes calling it a product, other times referring to it as a collection of technologies.[4]
Cairo useddistributed computing concepts to make information available quickly and seamlessly across a worldwide network of computers.
TheWindows 95 user interface was based on the initial design work that was done on the Cairo user interface.[5][6]DCE/RPC shipped inWindows NT 3.1. Content Indexing is now a part ofInternet Information Server andWindows Desktop Search.[2]
The remaining component is theobject file system. It was once planned to be implemented in the form ofWinFS as part ofWindows Vista but development was cancelled in June 2006, with some of its technologies merged into other Microsoft products such asMicrosoft SQL Server 2008, also known under the codename "Katmai".[7]
| MS-DOS-based | |||||
|---|---|---|---|---|---|
| Windows NT |
| ||||
| Specialized | |||||
| Windows IoT |
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| Windows Mobile | |||||
| Windows Phone | |||||
| Cancelled | |||||
| Related | |||||
Operating systems by Microsoft | |
|---|---|
| Desktop / Server | |
| Mobile | |
| Embedded / IoT | |
| Network | |
| Others | |
