me too! Vim plus markdown; pandoc to covert the markdown to HTML; plus a Google Chrome extension that overrides the "new tab" page to point at the markdown file (like this one: https://src.chromium.org/viewvc/chrome/trunk/src/chrome/comm...)

That's essentially what I have created Static Marks [0] for. I maintain my bookmarks in YAML files and let my tool create a dynamic web app. I'm then mostly using a custom browser search engine to jump into my bookmarks, e.g. "sm hacker" will open my bookmarks app and set "hacker" as the active filter.

[0] https://darekkay.com/static-marks/

That looks very slick. Nicely done!