Reminder Commander - Reminder manager that reminds you about important events in advance.
Holiline Reminder - Holiline Reminder is both an event reminder and a calendar.
JIT Scheduler - JIT Scheduler is a task scheduler for Windows 95/98/ME/NT4/2000/XP/2003.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
Memo to Me - Online email & SMS reminder service.
Date Reminder - Date Reminder reminds you of recurring or nonrecurring events, like birthdays, bills to pay...