You can set alarms for every Tuesday, every other week, Friday the 13th, the second Thursday of every third month, etc. Events can be ignored if they occur a specific number of minutes, hours, or days in the past.

You can create templates for creating new alarms. For example, have a "Meeting" template, a "Grocery store on the way home" template, and an "Important Birthday" template. This greatly simplifies entering values for the types of alarms that you create often.

Alarm++ has a well-designed and easy-to-use interface. It stays unobtrusively in your system tray or can be minimized on your taskbar. The autosave feature means that you never have to worry about losing your alarms to a Windows system crash. Alarm++ is powerful, flexible, easy to use, and simple to install (and to uninstall if you decide to).