Planning Poker - Open source implementation of planning poker game (collaborative online estimation/voting tool).
Workona - A better way to work in the browser.
Firepoker - Agile Planning Poker powered by Firebase and AngularJS
OneTab - Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.
Taiga - Project management platform for agile developers & designers
Session Buddy - Manage Your Browser Sessions