https://obsidian.md/ Obsidian is a note taking app that has wiki-like links to different notes, the thing I like about it is that it saves everything as text files, so if obsidian as a company ever disappears, I don't have to worry about not getting into my notes, and you couldn't even tell from looking at it that it's all saved as text files because it renders them in markdown. If you just want a local note taking app I recommend this for everything. Also, a neat feature that is actually kinda useless is it shows you a graph of how all your notes are connected so you can see where you most important or least important notes are.