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: Pusher is a hosted API that allows you to add realtime functionality to web and mobile applications. It makes it easy to build features like notifications, messaging, live updates, collaborations tools, and more. Pusher handles all the complex functionality like scaling, security, and reliability behind an easy-to-use API.
Type: software