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: tcpdump is a command-line network monitoring and data acquisition tool used to capture packet data flowing over a network. It can intercept and log traffic passing over a digital network or part of a network.
Type: software
Pricing: Free