CaLogic is a feature rich, muti user, Open Source (GPL) Web Calendar. It is written in PHP and uses MySQL to store its data.Please feel free to use this site. You do not have to become a registered user to access any part of this site. But to use the new notification options, you must be registered on this site. Also, if you create a CaLogic Support Site Account, you will be able to use the notification options to be notified when a new CaLogic release becomes available.