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.
Bonusly - Recognition and rewards that make work fun
Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
Kudos - Kudos is the simple and easy to use employee recognition software that enhances employee engagement and team communication.
Sympa - Sympa is an open source (GNU GPL) mailing list management (MLM) software.
Assembly - Work smarter, not harder. Save 1 day/week with free customizable workflows. Get access to 40+ workflow templates such as Employee Recognition & Engagement. Simplify your day-to-day workflows, increase team productivity & add simplicity to your work.
MailChimp - MailChimp is the best way to design, send, and share email newsletters.