Digital Clock 4 - Beautiful customizable clock with plugins
Reminder Commander - Reminder manager that reminds you about important events in advance.
System Scheduler - System Scheduler for Windows, Free Task Scheduler Software replace Microsoft Windows Task Scheduler
Date Reminder - Date Reminder reminds you of recurring or nonrecurring events, like birthdays, bills to pay...
VisualCron - VisualCron is an automation, integration and task scheduling tool for Windows.
Scheduled tasks - GNOME GUI for configuring a users' cron (automatic jobs). Some of its features are: