Librelist
Librelist is a free as in freedom mailing list site for open source projects
21 Alternatives To Librelist
ArmorForums
Platform for creating free private forums on a subdomain and cloud hosted software developed and maintained by ArmorForums.
Astraweb
Premium Unlimited Usenet news server services.
Framalistes
Create email discussion lists
FreeLists
FreeLists provides the internet community with Free, no-hassle, high-quality mailing lists
Giganews
Giganews is the world’s best Usenet provider. Offering the world’s highest quality retention and fastest speeds. Sign up for a free 14 day trial.
GroupServer
Email lists, with an integrated web interface, and control.
GroupSpaces
Free Group Website, Membership Database, Listserv Mailing List, Online Group Management Software : GroupSpaces
Mailman
Mailman is free software for managing electronic mail discussion and e-newsletter lists.
Meetup
Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
QuickTopic
Free hosted message boards, public or private. E-mail enabled.
Sympa
Sympa is an open source (GNU GPL) mailing list management (MLM) software.
TidyHQ
Organization management tool to support membership, subscriptions, event planning, and outreach.
Unison by Rotunda Software
Unison is a group communication tool that helps organizations connect and organize their people.
XSNews
XS News enables all her customers to use Usenet without any restrictions on transfer speed. Simplicity and quality are the most important values of XS News. These values are present throughout the entire scope of our services.
Yahoo! Groups
Online discussion boards from Yahoo!
shiftmail
Email analytics made simple. shiftmail provides a REST API and web interface for intelligence gathering within email marketing.