ChronoScope

ChronoScope is a simple Calendar/Notes app for PC.

Yes. I know your grandma's sewing machine has a calendar app. I know your smart toilet has a calendar app. There's a million of them. I use about 17 of them. But there was one that was missing. This one.

* No live services, no email integration, no integrations of any sort, no "clouds", just simple, honest-to-god software that saves files locally.
* No clicking to go between months. Time is a single, continuously scrollable column. Months are not that useful of a concept. They are sufficiently distinguished with subtly alternating background tones.
* Mark different kinds of events or notes with different icons or UTF8 characters of different colors, and choose how they are positioned in the cell!
* keep track of things like how many days old you are, and what percentage of the present year has gone by. It's morbid, but in a good way, I think.
* Highly customizable, speaks yaml fluently, can be used as a GUI to output timestamped yaml data.