1. Chat Anywhere – popular chat server software intended for web
http://www.lionmax.com/chatanywhere.htm

2. Microsoft Chat 2.5 – different language versions of a graphical chat software
http://www.phoenix-online.org/mschat/mschat.htm

3. Snitz Forums 2000 – elaborated web forum software
http://forum.snitz.com/

4. Invision Power Board – professionally developed web forum software
http://www.invisionboard.com/

5. phpBB - open source forum software
http://www.phpbb.com/