I have seen numerous threads about free forum hosting, so I have decided to create a thread with some of them.

There are several types of forums you can choose from, so here are some of them:

Invision Power Board

Original Site: http://www.invisionboard.com (not free, FTP needed)

http://www.invisionfree.com
http://www.spreebb.com
http://www.forumer.com
http://www.ipbfree.com
http://www.forumhoster.com
http://www.invisionplus.net
http://www.hosted-forum.com

phpBB

Original Site: http://www.phpbb.com (FTP needed)

http://www.myfreebb.com
http://www.forumer.com
http://www.myforuma.com
http://www.phpbbforfree.com
http://www.forumforfree.com
http://www.forummate.com
http://www.jconserv.net/

Others

ProBoards: http://www.proboards.com

MyBB: http://www.mybboards.com (FTP needed), http://www.mybbfree.com

Simple Machines: http://www.simplemachines.org (FTP needed), http://www.smfforfree.com


Note: These are NOT all of them. There are a lot more, yet to be added.

If you know more, could you please post here or PM me.