What is the best alternative to HTTP/3?

Based on company usage data, Popper is the most widely adopted alternative, detected on 15,785 websites.

How many companies use HTTP/3?

AgentData detects HTTP/3 on 199,043 company websites as of September 2026.

Are companies switching away from HTTP/3?

AgentData tracks technology changes across company websites. Check back for switching trends as we detect more changes.

HTTP/3 alternatives

Ranked by real company usage

The most popular alternatives to HTTP/3 based on AgentData's analysis of 199,043 company websites are Popper (15,785 companies), Gravatar (3,794 companies), SWFObject (1,184 companies).

HTTP/3: 199,043 companiesCategory: Miscellaneous15 alternatives found

Top alternatives to HTTP/3

15,785 companies

3,794 companies

1,184 companies

1,151 companies

662 companies

614 companies

271 companies

238 companies

134 companies

#10

131 companies

#11

116 companies

#12

90 companies

#13

Oracle Dynamic Monitoring Service

78 companies

Compare →

#14

66 companies

Compare →

#15

Pygments

52 companies

Compare →

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199,043 companies with emails, tech stacks, and contacts

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1,000 lookups · API access · CSV exports

API access

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

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Compare

HTTP/3 vs PopperCompare →HTTP/3 vs GravatarCompare →HTTP/3 vs SWFObjectCompare →HTTP/3 vs Azure Edge NetworkCompare →

Companies using HTTP/3→

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