GroupServer provides email mailing lists, with a web forum interface, in a website development framework.
GroupServer is an open-source collaboration server, licenced under the GPL. It allows people to hold many-to-many and one-to-many conversations using email and the web. The email interface to GroupServer is like a mailing list: people send a message to the email address of the group, and the message is relayed to all group members who want to receive it.
The web interface of GroupServer provides a secure and personalised interface like an online message board with member directories, postings by topic, Web Feeds, document sharing, advanced searching, and Web-based forum management and many other features.