Ontology development tools (r/semanticweb thread)
A Reddit r/semanticweb thread asking for the best ontology development environment — the Protégé-class editors used to author RDF/OWL ontologies. It marks the authoring-tools layer of the knowledge-representation stack: once you have rdf and OWL, building a non-trivial ontology needs specialist tooling, and that authoring cost is part of why the heavy end of the semantic web stayed niche (the vision-vs-deployment tension in synthesis).
Honest stub
Reddit blocks automated fetch, so this summary is reconstructed from the thread title + subreddit context per the hub fetch-fail rule — the discussion body was not read, and no specific tool recommendation is captured here.
Tier
T4 — an unverified, unread forum question (not an authoritative source). Recorded with its weakness per the quality gate rather than dropped.
The gap this stub named is closed (noted 2026-08-21). It asked for a first-party page on Protégé as the highest-value replacement, and protege is now in the spoke — Stanford-maintained, OWL 2, desktop and web, and carrying the OBO Foundry / ICD-11 / NCI Thesaurus deployments that show the heavy stack is alive where the payoff justifies the authoring cost. This page is kept for what it still is: evidence that the question gets asked, which the authoritative page cannot supply. What is not closed is the comparison — Protégé is one editor, and nothing here ranks it against the alternatives the thread was actually asking about.