Rainlendar is a calendar tool that displays the current month and is customizable to your needs. It is a lightweight simple application and is easy to use. You can add important events and choose your own appearance of choice for each event. It can synchronize the events between different clients. It supports multiple languages and hot keys for quick access too. You can set an alarm for each event so that you never miss any. It even includes a to-do list and can also show up outlook appointments. You can set it to stick to the desktop so that it is always handy.