It's an app that runs in the background and adds the classic dropdown "quake mode" to an app to your choosing.
Here's a short video demonstrating the concept: https://wtq.flyingpie.nl/assets/video/wtq-win11.mp4
Initially it was for adding quake mode to terminal apps, but it works on most apps now.
After switching to Linux, I also added support for KDE Plasma.
Other people talking about their use cases and feature requests have made it a lot more useful, and turned it into a fun process. So I'm hoping to get some more feedback, hear opinions :)
The documentation is pretty far along and the source is on GitHub.