Gone - An ephemeral to-do list
Workona - A better way to work in the browser.
Streaks - The to-do list that helps you form good habits.
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.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Session Buddy - Manage Your Browser Sessions