PHP-Nuke

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PHP-Nuke was an early content management system.

The last stable release was in 2014.

Official website: https://www.phpnuke.org/

Source code form 2013: https://bitbucket.org/phpnuke/phpnuke/src/master/

See: https://en.wikipedia.org/wiki/PHP-Nuke

See also  del.icio.us