Mailman - Mailman is free software for managing electronic mail discussion and e-newsletter lists.
BizRun - Manage HR and grow your business visually.
Mailman 3 - Dedicated Mailman 3 installation. Unlimited lists/configuration. Free subdomain at mailman3.com. Dedicated support for list admins.
Worknice - Worknice is a performance management software that helps companies effectively manage their sales and customer-related business processes.
Listmonk - Send e-mail campaigns from a powerful dashboard. High performance and features packed into one app.
Ingentis org.manager - Organizational chart creation & publishing