http://www.phpwebscripts.com/free-scripts/board_plus.html

http://www.anelectron.com/

https://www.beehiveforum.co.uk/

a PHP/MySQL discussion forum, and generally the best thing ever. Apart from real bees.

https://www.zenphoto.org/

Zenphoto features support for various media formats and integrated blog and custom pages. Zenphoto is the ideal CMS for personal websites of illustrators, artists, designers, photographers, film makers and musicians.

https://sourceforge.net/projects/yappa/

http://yapig.sourceforge.net/

YaPiG is a simple but powerful web album very useful for publishing your image galleries. It has a web-based admin tool, a very easy configuration, allows a user to post comments and it has visit stats.

https://www.tftgallery.org/?content=index

TFT Gallery is a PHP-based Web image gallery which doesn't need a database. Instead of using a database, it reads album info from the directory structure.

http://spgm.sourceforge.net/

http://www.slooze.com/

https://sourceforge.net/projects/singapore/