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Attention! ReminderFox will not work with Firefox 57. To find out about options for continued use of ReminderFox, read this note from the developers.


Daniel Lee and Tom Mutdosch developed this add-on because forgetting your mother’s birthday just one time is one time too many! To ensure that never happened again, we wanted something to help us remember important dates so that there was no way we would forget them. We weren’t big users of calendar applications; we just wanted something simple. So we thought, what’s simpler than having reminders in a place where you are sure to see them? In your browser. Thus, ReminderFox was born. We hope it helps you to remember, too!