An update or follow-up to a notification, letting the responsible party know a time-sensitive event has been triggered. Reminders may require the severity of the problem be increased.

A notification of an upcoming event. There are two types. A popup window displays an alert some specified period of time before the event. Display upcoming places one or more day events in your agenda for some period of time before the event.

a highly configurable program which reminds you of birthdays, appointments and other events

an e-mail sent to call your attention to an upcoming event or task

Software "egg timer" utilities. Allows you to quickly set reminders to be displayed later in a hard to ignore window, with the option to post pone the reminder to a later date.

a message that helps you remember something; "he ignored his wife's reminders"

an experience that causes you to remember something