AgentData
How it worksPricingDocsLive
AgentData

Company intelligence for AI agents
and growth teams.

PrivacyTermsCookiesData removal
Product
CompaniesLocal businessesTechnologiesPeopleHow it worksWhy it is freeDocumentation
Explore
Market intelligenceBrowse by industryLocal business directorySwitch signals
Alternatives
Apollo alternativeZoomInfo alternativeClearbit alternativeHunter alternativeBuiltWith alternativeLusha alternativeCognism alternativeMoltSets alternativeAll comparisons
Resources
BlogAPI & MCPllms.txtGitHubnpm
Crawling now
128,292,728 domains indexed·16,302,285 local businesses·7,656,660 emails found·3,073 technologiesLive data →
Made by Duda & Nick
© 2026 AgentData. All rights reserved.
Home›Technologies›HTTP/2›HTTP/2 vs X-Clacks-Overhead
H
HTTP/2
vs
X
X-Clacks-Overhead

HTTP/2 vs X-Clacks-Overhead

X-Clacks-Overhead is used by 238companies — 1.8x more than HTTP/2 (131).

131 use HTTP/2238 use X-Clacks-Overhead789 emails available

Side-by-side comparison

HTTP/2X-Clacks-Overhead
Companies131238
CategoryMiscellaneousMiscellaneous
Emails available253536

Company adoption

HTTP/2131X-Clacks-Overh…238

Top industries

HTTP/2

Other57
Media & Content16
Education & Learning10
E-commerce & Retail9
Hospitality & Travel7

X-Clacks-Overhead

Media & Content123
Other73
Hospitality & Travel23
Education & Learning10
Professional Services6

Top companies using HTTP/2

Restauracja Spichlerz w Olsztynie k/Częstochowyspichlerz.netMedia Gazmediagaz.plGemeinde Rosdorfrosdorf.deHallenbad Sulingenhallenbad-sulingen.deKaterschmauskaterschmaus.de

Top companies using X-Clacks-Overhead

Cairngorm Mountaincairngormmountain.co.ukBillettobilletto.ieGOBI Gothagobi-gotha.deThe Vintage Bean Cafesheyegirlcoffee.coValka.czvalka.cz

Get the full comparison

369 companies with emails, tech stacks, and contacts

Start free →

1,000 lookups · API access · CSV exports

API access

GET /api/v1/tech?name=http-2

From the makers of AgentData

DragApp

AI-powered shared inbox, help desk, and team collaboration — inside Gmail. 200K+ users.

Try DragApp free →

HeyHelp

AI email assistant inside Gmail. Drafts, sorts, follows up.

Try HeyHelp free →

Oneway

All-in-one customer platform — live chat, email, automations, changelogs & roadmaps with AI.

Try Oneway →

Related comparisons

HSTS vs HTTP/2Compare →HSTS vs X-Clacks-OverheadCompare →Google Analytics vs HTTP/2Compare →Google Analytics vs X-Clacks-OverheadCompare →HTTP/2 vs jQueryCompare →jQuery vs X-Clacks-OverheadCompare →

View individually

H
HTTP/2
Companies using HTTP/2→
X
X-Clacks-Overhead
Companies using X-Clacks-Overhead→

Frequently asked questions

Need this data via API?

Access technology comparison data programmatically via REST API or MCP.

API docs →