Atomic Alarm Clock is an easy to use alarm clock that can remind you of appointments or other important tasks. It supports one-time and recurring reminders with optional sound notification, as well as associated sound and actions. You can choose from several sounds that come include or select any MP3 file from your computer. The program can optionally launch a program or document at the time of the reminder, and also shut down your computer at a certain time. Atomic Alarm Clock also includes a replacement for the standard Windows tray clock, that allows you to choose from dozens of different skins and styles, as well as a time synchronizing feature to adjust your system time via online time servers.