php forum, php forum script, forum software, bbs - by XMB Forum
Free forum software
This is a very simple CGI forum.
Fidonet/FTN SQL Database processing application
Simple anonymous chat on JS/jQuery/PHP
Discuz! X2 - русская локализация
xBoard is a lightweight forum, news, and chat script.
A simple, quick, user friendly and secure forum like Baidu.com tieba.
A BBS imageboard, like futaba, written in Python with Django