Google’s content delivery network for popular open-source libraries. Browse the websites we've detected it on, and see what else they use.
We look for the signals Google Hosted Libraries leaves in a website — its scripts, the markup it renders, headers and DNS records — and match them against known fingerprints. Some sites hide these signals, so the list is not exhaustive.
A website is checked when its first report is made, and again when someone views its report after the data has aged. Counts on this page are refreshed every few hours; "detected since" is when we first saw it on that site, recorded from October 2026.
Showing 351–400 of 126,985, the most popular first
The first 1,000 are listed; filter by name to find others.
Top 10k sites: the Tranco list 64VKX, a research ranking of popular sites.