I'm sad there's still no good offline and native clone of Workflowy/Dynalist after all these years. I've tried many other outliner-like note-taking software, but I haven't found anything that is more comfortable to use than the outliner system in Workflowy/Dynalist. To paraphrase a quote I've heard online, "it fits my brain like a glove."

Dynalist has an offline app (which syncs with the server when online). See https://dynalist.io/download . It's the same interface as on the web (so not 'native'), though.

Basically this is why folks use org-mode, but it won't satisfy you if you're used to syncing.

ActionOutline was my go-to native outliner on Windows.

https://www.actionoutline.com/

I’ve landed on the same approach, in WorkFlowy. I’ll tag lines #todo for tasks, or a project-specific hashtag, so it’s really easy to see everything I’ve written about a subject. Only two months in but it’s great and very low-friction. Using RocketBook to merge in handwritten notes I make in the mornings and evenings sometimes.

+1 for TaskPaper.

Markdown for notes and Taskpaper for tasks, projects and outlines. It is a format and a Mac app, that is extremely well made. Super fast keyboard navigation, customizable styles and scriptable in JavaScript. Love it.