Markdown-based Notes App
"Tangent Notes is a markdown-based note editor that makes it easy to write and explore your thoughts the same way you think.
Let yourself get pulled into a tangential thought that interests you, follow the thread and find what made that thought interesting, and then come back to where you started all without losing context.
Tangent is built for desktop and packaged with Electron. Svelte powers everything in Tangent's UI but the text editor, which is a heavily customized typewriter-editor."