H2O is a fast and secure HTTP/2 server written in C by Kazuho Oku.
Websites using H2O
These are the top websites using H2O based on traffic.
Get the full list of websites and companies using H2O.
Create relevant reports for H2O to find sales leads or learn more about your target audience.
H2O usage trend
This graph shows the growth of H2O since November 2022.
A breakdown of countries and languages used by H2O websites.
Alternatives to H2O
These are the most popular H2O alternatives in 2023.
See the full list of H2O alternatives.
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