Let's you to access your FB account from the command line and returns various things number of unread notifications, messages or friend requests you have.

This is a simple npm module that provides wrapper to access StackOverflow API.

未读消息的树形结构

Notification System

Unofficial 99designs browser extension to get desktop notifications with the number of unread notifications with specific sound and title bar of 99d pages open updated with these numbers.

It will add the unread messages and alerts to the title.