NAG Downloads - Fortran Library

Apple Intel-based Mac (Mac OS X) - 64-bit systems

Specific download information:

  • Fortran Library, Mark 23
  • For Intel-based Mac 64-bit Systems
    MAC OS X 10.5.8 or compatible (incl. 10.6.7)
  • Using Intel Fortran For Intel64, Version or compatible
  • File size of Fortran Library (includes Library Manual)
    397 MB ; 417240536 bytes
  • NAG Product Code: FLMI623DCL


The software is provided as an Apple disk image (dmg) file.
Download the dmg file from here (size: 397 MB).
Double click on "FLMI623DCL.pkg" to install the Fortran Library.
Double click on "NAG Fortran Library Manual, Mark 23.pkg" to install the Library manual.

For further installation instructions, please refer to the Installer's Note and Users' Note.

Licence key

To enable the use of your NAG software you will need a relevant licence key. Instructions for obtaining a licence key are included in the products Installer's Note. Alternatively you can complete the ‘Request a Licence Key’ web form here. If you've already been supplied with a licence key from our Support Desk then you will not need to complete this form/request a key. In the event of difficulty please contact your NAG Response Centre.

Trial Request

For more information on trialling NAG software click here.

Product Purchasing

The product can be purchased by contacting one of our offices.