It's written in Swift and Racket. Very interesting choice! The Racket code is beautiful, and I like that it's parsing user input as commands.<p>I have a bash script (named "j" for journal) that I wrote for a similar purpose. Throughout the day, I stash quick notes for reminders, as well as things to think about later (links, topics, ideas).<p>One feature a user might want is an overview of stashed notes.