Scientific analysis of collaborative communities

Easy to use email discussion lists.

An auto moderator script for a listserv that requires you to email it daily or be removed (used at Carleton College)

Simple, lightweight listserv-style mailing list manager

A headless open source tool for synchronizing users' name and email between a MySQL database and mailman server.

Open-source multi-tenant mailing-list service on Cloudflare's developer platform