Download GAMS Release 26.1.0 (February 02, 2019)

Please consult the release notes before downloading a system. Here are the detailed platform descriptions and installation notes.
The GAMS distribution includes the documentation in electronic form.


MS Windows 32 bit

Microsoft Desktop and Server Operating Systems (x86_32 architecture)

MS Windows 64 bit

Microsoft Desktop and Server Operating Systems (x86_64 architecture)

Linux 64 bit

GNU/Linux System (x86_64 architecture)

Mac OS X

Macintosh System (x86_64 architecture)

other platforms

For the GAMS systems for AIX and Solaris, please complete the form to request download information.


  1. Without a valid GAMS license the system will operate as a free demo system.

    Model limits

    • Number of constraints and variables: 300
    • Number of nonzero elements: 2000 (of which 1000 nonlinear)
    • Number of discrete variables: 50 (including semi continuous, semi integer and member of SOS-Sets)

    Additional Global solver limits

    • Number of constraints and variables: 10

    The GAMS log will indicate that your system runs in demo mode

    GAMS 24.9.1   Copyright (C) 1987-2017 GAMS Development. All rights reserved
    Licensee: GAMS Development Corporation, USA              G871201/0000CA-ANY
              Free Demo, +1 202-342-0180,, DC0000 

    GAMS will terminate with a licensing error if you hit one of the limits above:

    *** Status: Terminated due to a licensing error *** Inspect listing file for more information
  2. MD5-Hash values (use a program like md5sum to verify):

    f633d2d654d6ff1bd7d1bc7a8aafffd6  MS Windows 32 bit  (windows_x86_32.exe)
    772ec339028e00e3f0d402b38d9af574  MS Windows 64 bit  (windows_x64_64.exe)
    caf0a2ddbfc39d3e19e6ea942895fcd4  Linux 64 bit       (linux_x64_64_sfx.exe)
    1beff48c37268841a50bc857d14f6222  Mac OS X           (GAMS26.1.0.dmg)
    31e8721ac37fed2c92d3b1d66543b599  Mac OS X           (osx_x64_64_sfx.exe)
  3. For Mac OS X, also a simple self-extracting archive is available, which you can download here.

    Note, that this archive does not contain GAMS Studio.

  4. The SmartScreen Filter on Microsoft Internet Explorer or Windows 8 and newer might give a warning during the installation. For more information please check our Support Wiki.

  5. To deliver GAMS with the best performance we are using the Amazon CloudFront web service, a global network of edge locations for content delivery.

Sign up for our newsletters

To get informed when a new version of GAMS is released, receive information about new features or just to stay in touch, sign up for our newsletters.