I remember once doing a tutorial about custom C# components but since relocating I lost the files to it.
I now want to get rid of this tab and components.
The fact that they are still there means that your computer still is finding them, even though you (currently) can’t.
Here’s the process I use to track down libraries that I’ve lost track of:
The component that is currently selected is a random component I (partially) developed before abandoning. The three after it are all from Metahopper by Andrew Heumann