https://xwmx.github.io/nb/

nb is a command line and local web note‑taking, bookmarking, archiving, and knowledge base application with:

plain text data storage,
encryption,
filtering, pinning, #tagging, and search,
Git-backed versioning and syncing,
Pandoc-backed conversion,
[[wiki-style linking]],
terminal and GUI web browsing,
inline images,
todos with tasks,
global and local notebooks,
organization with folders,
customizable color themes,
extensibility through plugins,
and more, in a single portable script.

... wow!

Thank you very much for sharing this!