Important Note

Nucleus CMS has been closed. Please read the announcement for more information and related projects.

The information below is for archival purposes. It is not recommended to install Nucleus 3.65 or earlier.


  • A server that supports PHP5+ scripting (versions 5.0.6+)
  • Access to a mySQL database from that server (versions 5.0+)

Download Nucleus

Note: If you are already running an older version of Nucleus, you should go to the upgrade-page instead and download the needed files there.

Nucleus Core v3.65 (March 31, 2013)

Newest version:

Language Version License
English Nucleus v3.65 (Full) GPL (Free Software)

Previous versions

Previous versions of Nucleus CMS are available in English, German and Polish:

Language Version License
English Nucleus v3.51 (Full) GPL (Free Software)
German Nucleus v3.24 (Full) GPL (Free Software)
Polish Nucleus v3.24 (Full) GPL (Free Software)

After downloading:

  1. Open readme.html to find out more about the installation, or look here.
  2. Check if there is a Language File available for your language.

Language files

Download Language Files for Nucleus.