How many companies use HTTP/3 vs List.js?

199,043 companies use HTTP/3 and 20,892 companies use List.js in our database. HTTP/3 is more widely adopted with 9.5x more companies than List.js.

Can I get a list of companies using both HTTP/3 and List.js?

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 — 9.5x more than List.js (20,892).

199,043 use HTTP/320,892 use List.js

	HTTP/3	List.js
Companies	199,043	20,892
Category	Miscellaneous	Hosting

Get the full comparison

219,935 companies with emails, tech stacks, and contacts

1,000 lookups · API access · CSV exports

API access

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

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