Commenty
Description: Commenty is a lightweight browser extension for adding comments and annotations to web pages. It allows users to select text, highlight sections, and add notes that are saved privately or shared publicly. The main benefit of Commenty is enabling personal or collaborative annotation without modifying the actual web page content.
Type: software
Mailman
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