Use this to-do list extension for Firefox to stay focused and productive while you surf. Assign web pages as tasks with one click. Organize them into projects and set deadlines so you remember to read them later. See and manage all your tasks and projects without leaving your browser. Todoist lets you set an email as a task with one click, so you'll always remember to follow up.
Todoist automatically synchronizes your tasks across all your devices - smartphones, tablets, laptops, desktops - so you always have up-to-date access wether on or offline.