It’s running locally on my machine. It’s the stuff that only I wanted for my particular needs. It’s the stuff that wouldn’t have been built otherwise because it wouldn’t have been worth the effort. I’m guessing this is true for a lot of people.
1. A frontend to MacOS Quicklook that gives me many additional playback controls.
2. A daemon that listens for messages on my LAN to add scheduled notifications to my preferred app launcher without cluttering my reminders.
3. An improved version of a tool I built to watch for specific streamers and capture the content compared to the one I created years ago. I wouldn’t have enhanced it beyond the version I had that was good enough.
4. A metadata inspector that I can invoke in the GUI with a hotkey focusing only on the stuff I’m interested in seeing.
5. A hotkey terminal launcher based on the color themes I have configured on my device so I can arrow through and choose in the moment.
etc, etc, etc…
Same here. I'm making more software than ever, for myself, and I'm finding it incredibly useful. But even though I've been a proud open-source software developer, I'm not releasing this new code because I don't see the value in it: I won't get the credit (because I "only" designed it, and didn't write the code), nor will anyone else use it, and if they did use it, I wouldn't want another maintenance burden for myself. So it stays private.
Same. I've spent 20 years trying tool after tool and finding some part of it unfit, some stupid edge case for my broken brain. I have so much of my own crap now that I'm building new crap to manage the crap. If my professionally-sourced anxiety wasn't eating my stomach lining I'd be having a great time!