Description: Mailman is an open source mailing list management system. It helps manage email discussion and announcement lists, allowing users to subscribe and unsubscribe, and helping admins moderate and post to the lists.
Type: software
Pricing: Free
Description: Nagios is an open-source monitoring system that allows administrators to monitor network infrastructure like servers, switches, applications, and services. It can notify users when issues arise and help identify problems in a timely manner.
Type: software
Pricing: Open Source