Mac: It's all too easy to forget about those simple recurring tasks you need to do throughout the day. RemindMeAgain is a little app that rests in the menubar and allows you to set quick reminders for just about everything.
RemindMeAgain is simple, but it does what it does well. Simply enter in a reminder and the duration you want to be reminded. It's handy to make good habits, like standing up once an hour, grabbing a drink of water, or following the 20-20-20 rule. RemindMeAgain works with Notification Center, so you can make it as unobtrusive or annoying as you like.