Mado: Fast Markdown linter written in Rust

Mado is older (~April 2024) vs rumdl (~March 2025). It's also faster, per rumdl's own benchmark graph.

Mado is purely a linter; rumdl is also a partial formatter, and offers a LSP.

Panache has a well written and broader comparison between these, and other tools here: https://panache.bz/guide/comparison.html