NAG Downloads - C Library

Windows XP/2003/Vista/7 - Intel C/C++ or Microsoft C/C++

Specific download information:

  • NAG C Library, Mark 9
  • For Windows XP/Vista/7 or compatible
  • 32 bit x86 systems and compatible
  • Using Intel C/C++ version 11.1
    or Microsoft Visual C++ Release 15.0 and 16.0
  • File size / MD5sum of NAG C Library
    81.1 MB ; 85089665 bytes ; MD5sum=839750a3eff8dda018fce18fabda5386
  • File size / MD5sum of Documentation
    106 MB ; 112157862 bytes ; MD5sum=189520640feeeea64fb394481e0d82e7
  • NAG Product Code: CLW3209DAL


The software is provided as self-extracting executable.
Download it from here (81.1 MB),
and then run setup_clw3209dal.exe to install the NAG C Library.

For implementation specific information, refer to the Installer's Note and Users' Note.


You can access the documentation on our website.
You also have the option to download the self-extracting executable from here (106 MB),
and then run setup_cl09_manual.exe to install the NAG C Library Manual.

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 Notes. 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.