Streaks - The to-do list that helps you form good habits.
Workona - A better way to work in the browser.
Taskful - Deadlines, meet your match.
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.
ToDoList - Windows desktop application to stay on top of your daily tasks.
Session Buddy - Manage Your Browser Sessions