Personal Calendar and Event Reminder
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Remind-Me tracks and reminds you of important events before they occur. It displays holidays, birthdays, anniversaries, and scheduled events on an attractive traditional calendar. Remind-Me can alert you when your computer starts up, or at any specified time. Remind-Me has built-in support for sending e-mail when an event occurs. E-mail can be sent automatically, or you can compose it yourself.
Very easy to use. A variety of reminders are available including visual, audio, and email. Small memory and CPU footprint. Syncs with Google calendar and then smart phones and tablets from there.