As my employer doesn't let us install apps on work PCs, this add-in was the ideal workaround to access my task list (as I'm a complete Applehead everywhere else). I love Todoist - the only todo app (and I've tried many) which properly integrates with almost everything I need it to, adds tasks painlessly and sync's completely smoothly, lets me turn emails on multiple accounts into tasks, doesn't irritate the heck out of me, shows timed reminders in my calendar, makes me feel good for staying organised, and just generally rocks. If it would only talk properly to Habitica, I'd be in heaven.