I have pretty garbage short-term memory in addition to (or because of) ADHD. I made a macOS app to let me take screenshots of parts of a screen and keep them around while I work, essentially extending my own short term memory. I call it ScreenHint (it's essentially a reimplementation of a similar app called Snappy that no longer seems to work) and I use it pretty much every day, any time I'm at my computer.