Technologies used by tc39.es

Sockt found 5 technologies on tc39.es. Each one shows how it was found and the dates we first and last saw it.

Captured 8 September 2026 Source: Common Crawl Majestic rank 23,646

UI frameworks

Normalize.css High confidence Found in page structure First observed 8 Sep 2026 Last seen 8 Sep 2026

Fastly High confidence Found in HTTP headers First observed 8 Sep 2026 Last seen 8 Sep 2026

GitHub Pages High confidence Found in HTTP headers First observed 8 Sep 2026 Last seen 8 Sep 2026

Varnish High confidence Found in HTTP headers First observed 8 Sep 2026 Last seen 8 Sep 2026

Google Font API High confidence Found in page structure First observed 8 Sep 2026 Last seen 8 Sep 2026

See the evidence behind each detection, watch tc39.es for changes and export sites with the same technologies.

TC39 is a standards committee that develops and maintains the JavaScript language specification with developers, implementers, and academics.

AI estimate from the site's own text, made 14 October 2026. It may be wrong.

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