I've been using https://www.gitbook.com/ https://www.gitbook.com/ for my personal wiki for the last year, it has a Notion-like UI and syncs changes to GitHub as

I've been using https://www.gitbook.com/ https://www.gitbook.com/ for my personal wiki for the last year, it has a Notion-like UI and syncs changes to GitHub as markdown files. The UI is a little buggy and much less polished than Notion and co. Though it looks nice and does the job for simple rich text. But most importantly I don't have to worry about lockin if gitbook goes out of business, loses my data, increases their pricing, worsens the UI, or pivots to another business model - straight away I can use my text editor or the GitHub online editor. Git is a great fit for wikis!