Rainlendar is a small and compact desktop calendar that comes with some powerful features under the hood. It integrates nicely with your desktop wallpaper and allows interactive access to selected dates, just click on a date to add an appointment or reminder. It also comes with a ToDo list that can optionally be displayed or maintained hidden. The calendar automatically supports one-time and recurring events and tasks with optional reminder alarms. It highlights dates that have appointments and you can quickly switch between months via keyboard shortcuts or your mouse wheel.