How many companies use HTTP/3 vs Kestrel?

199,043 companies use HTTP/3 and 448 companies use Kestrel in our database. HTTP/3 is more widely adopted with 444.3x more companies than Kestrel.

Can I get a list of companies using both HTTP/3 and Kestrel?

Yes. AgentData tracks companies using both tools. Sign up free to access the full list with emails, tech stacks, and contacts via CSV or API.

HTTP/3 is used by 199,043companies — 444.3x more than Kestrel (448).

199,043 use HTTP/3448 use Kestrel

	HTTP/3	Kestrel
Companies	199,043	448
Category	Miscellaneous	Web servers

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199,491 companies with emails, tech stacks, and contacts

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GET /api/v1/tech?name=http-3

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