OS/2

OS/2 is an operating system that was originally made by a joint agreement between the Microsoft and IBM companies. The name stands for "Operating System/2". It was intended to replace MS-DOS and Microsoft Windows. OS/2 was maintained by IBM until 2006.

OS/2

Developer	IBM Microsoft (1.0–1.3)
Written in	C, C++ and assembly language
Working state	Historical, now developed as ArcaOS
Source model	Closed source
Initial release	December 1987; 37 years ago (1987-12)
Latest release	4.52 / December 2001; 23 years ago (2001-12)
Marketing target	Professionals, servers
Available in	Chinese, English, French, German, Italian, Japanese, Korean, Spanish, Portuguese, Russian
Platforms	x86, PowerPC
Kernel type	Hybrid kernel
Influenced by	MS-DOS, IBM PC DOS
Default user interface	Workplace Shell Graphical user interface
License	Proprietary
Succeeded by	First by eComStation, then ArcaOS
Official website	OS/2 Warp (Archived)

IBM discontinued its support for OS/2 on 31 December 2006. Since then, it has been updated, maintained and marketed under the name eComStation. In 2015 it was announced that a new OEM distribution of OS/2 would be released that was to be called ArcaOS.