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Developer(s) Narech Koumar
Stable release 9.1.2 / April 20, 2006; 8 years ago (2006-04-20)[1]
Development status Abandonware
Operating system DOS
Platform x86
Type DOS extender
License Free software

DOS/32 is an advanced 32-bit DOS extender created for replacing DOS/4GW extender and compatibles. This extender can be used in various environments, from embedded systems to DOS emulators, by both developers and end users alike.[2]


DOS/32 is compatible with MS-DOS 5.00 through 7.10, Windows 3.x, 95, 98 and Me, NT 3.51 and 4.0 (Service Pack 3 or later), 2000, XP and IBM OS/2 as well as OpenDOS and DOSEMU.[3]

DOS/32 has been tested and proved to be fully compatible with software which use DOS/4G, DOS/4GW, DOS/4GW Professional, PMODE/W and CauseWay DOS Extenders.[3]


The DOS Extender includes a built-in Advanced DOS Protected Mode Interface server supporting v0.9 of the DPMI specification and comes with a set of tools needed to create 32-bit protected mode applications. Like DOS/4G, it requires IBM PC compatible 80386 processor or better.[4]


DOS/32 has been commercially available since 1996. As of May 2002, it was released to the public in the form of "Liberty Edition" which provides complete source code, allowing unrestricted, royalty-free distribution.[2]

See also[edit]


  1. ^ "DOS/32A DOS Extender -- ChangeLog". 
  2. ^ a b About DOS/32 Advanced DOS Extender
  3. ^ a b DOS/32 Advanced - Compatibility
  4. ^ DOS/32 Advanced DOS Extender - Technical Information

External links[edit]