How many companies use Fathom vs HTTP/3?

1,031 companies use Fathom and 199,043 companies use HTTP/3 in our database. HTTP/3 is more widely adopted with 193.1x more companies than Fathom.

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

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 — 193.1x more than Fathom (1,031).

1,031 use Fathom199,043 use HTTP/3

	Fathom	HTTP/3
Companies	1,031	199,043
Category	Analytics	Miscellaneous

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200,074 companies with emails, tech stacks, and contacts

1,000 lookups · API access · CSV exports

API access

GET /api/v1/tech?name=fathom

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