How many companies use HTTP/3 vs mod_rack?

2,603,702 companies use HTTP/3 and 917 companies use mod_rack in our database. HTTP/3 is more widely adopted with 2839.4x more companies than mod_rack.

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

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 vs mod_rack

HTTP/3 is used by 2,603,702companies — 2839.4x more than mod_rack (917).

2,603,702 use HTTP/3917 use mod_rack

Side-by-side comparison

	HTTP/3	mod_rack
Companies	2,603,702	917
Category	Miscellaneous	Web server extensions

Company adoption

Top companies using mod_rack

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API access

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