FORUM DISCUSSION BOARD SCRIPTS
Also check out the Perl discussion boards at Hot Scripts, although a PHP board might be a better choice:

http://www.hotscripts.com/category/scripts/cgi-perl/scripts-programs/discussion-boards/

Here's the link to the PHP board scripts:

http://www.hotscripts.com/category/scripts/php/scripts-programs/discussion-boards/

I never got a bum script from Hot Scripts, and I've used a fair number of them.

Forumatic™ provides all the tools you need to run a community with none of the usual hassles. No need to manage the hardware, install the software or keep everything update.

https://www.forumatic.com/


There are other, more up to date, discussion forum software that would probably be better for whatever project you have in mind.

Most of these will be written in PHP, but there are some perl discussion forum programs still around.

Here are a few places to look:

http://www.thefreecountry.com/perlscripts/messageboards.shtml
https://www.phpbb.com/
http://www.jafaloo.com/best-open-source-forum-scripts/