Jointly developed by Microsoft Corp. and IBM to operate with Intel Corp.'s microprocessors, OS/2 was originally a 16-bit Operating System that was designed to work with 286 processors and first introduced in 1987.

OS/2 is a graphical interface similar to Windows and can also be run through command-line entries, similar to DOS. In fact, many OS/2 and DOS commands are the same.

In 1992, a new 32-bit version was released to operate with 386 and above PCs and at this time was now solely an IBM product.

Although some computer experts say latter versions of OS/2 are superior to Windows, Windows and the number of products created for it still dominate the market today.

Current Version

OS/2 Warp 4 

Discontinued  October 2002