GNU Mailman is a mailing list management software. Mailman project was started long time ago before the Millennium. Since its birth it has become the most intelligent tool for handling mailing lists ever. Huge number of companies with Fortune 500 members among them have been using Mailman for years. The new version Mailman 3 brings to us even better user experience and communication power.
SABnzbd - SABnzbd is a free/open-source cross-platform binary newsreader written in Python.
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
NZBGet - The most efficient usenet downloader.
Sympa - Sympa is an open source (GNU GPL) mailing list management (MLM) software.
Newshosting - Join with any administration arrange and get finish access to the simple to-utilize Newshosting Usenet Browser.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.