Would it be worth starting a tutorial/wiki topic here on the forum, broken down into topical/functional categories of generally useful tools? It could just be high-level links to other repositories for things like https://www.inaturalist.org/oauth/applications, mixed with links to specific tools that folks have found helpful. For me the latter category would include items of yours like
https://jumear.github.io/stirfry/iNat_print_friendly_obs.html
https://jumear.github.io/stirfry/iNat_taxon_est_means.html?taxon_id=49658
You are right, though, that we would want to address
What’s to prevent someone from adding something malicious, for example.