listserv
There are 5 repositories under listserv topic.
datactive/bigbang
Scientific analysis of collaborative communities
wagesj45/gray-duck-mail
Easy to use email discussion lists.
grahamearley/email_daily-Auto-Moderator
An auto moderator script for a listserv that requires you to email it daily or be removed (used at Carleton College)
nilshellerhoff/mailiszt
Simple, lightweight listserv-style mailing list manager
connorjc/listserv-sync
A headless open source tool for synchronizing users' name and email between a MySQL database and mailman server.