Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.

Officevibe - Officevibe is an employee survey platform with the mission of improving company culture. Measure and improve your culture in less than 5 minutes per month, with our simple surveys.

Mailman 3 - Dedicated Mailman 3 installation. Unlimited lists/configuration. Free subdomain at mailman3.com. Dedicated support for list admins.

15Five - 15Five software elevates the performance and engagement of employees by consistently asking questions and starting the right conversations.

MailChimp - MailChimp is the best way to design, send, and share email newsletters.

HR Cloud Workmates - Workmates provides team engagement, collaboration and productivity platform for modern enterprises.