Dark Calendar turns the Windows desktop into a personal planning workspace. Place calendars, tasks, routines, clocks, weather, D-Day and focus widgets directly on the desktop, then move and resize each element, create custom layouts and tune every color. Google Calendar sync is optional, local use works without it, and Korean, English, Chinese and Japanese are supported. Open source under GPLv3.
I built Dark Calendar because traditional calendar apps disappear behind the windows where work happens. I wanted the date, tasks, routines and focus tools to stay visible without forcing everyone into one layout. Every widget can be moved, resized and recolored, and Google Calendar is optional. I would especially value feedback on the desktop layout system and whether the first-time Google Calendar setup feels clear.