Tools I like (2026 and later)

PetScan

• PetScan — Scan category trees, and produce a list of articles.
  • https://petscan.wmcloud.org/ — the tool itself
  • https://en.wikipedia.org/wiki/Wikipedia:PetScan
  • https://meta.wikimedia.org/wiki/PetScan

Specific queries:

• All lichen pages (which categories does this include?)
  • Recent changes
  • (compare the category list to this other category list)