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React is on 4,548 of the scanned sites, Svelte on 222, and 35 run both. Counted from the latest scan of each site.
JavaScript UI library for web and native apps, owned since February 2026 by the React Foundation under the Linux Foundation.
4,548 sites55% of the 8,236 scanned sites using JavaScript Frameworks & Libraries+4 sites in the last 90 days, open-sourceCompiler-based JavaScript UI framework whose components do minimal work once they reach the browser.
222 sites3% of the 8,236 scanned sites using JavaScript Frameworks & Libraries0 sites in the last 90 days, open-sourceA switch is a confirmed removal of one and an addition of the other on the same site, between two of our monthly scans.
No switches between the two yet. We rescan every site monthly and count each one here.
Using React and not Svelte.
Using Svelte and not React.