⚡ H2O
H2O is an optimized, open-source HTTP server that supports HTTP/1.x, HTTP/2, and HTTP/3.
According to our data, H2O ranks 29th among the web servers we track.
It has 0.002% of the web server market share and is detected on 0.002% of all websites.
It is especially popular in New Zealand, appearing on 0.2% of all websites in the country.
- 🏠 Website
- </> Source code
💸 Pricing
H2O is available for free.
📊 Rankings and Market Share
- Web Servers
- Rank: 29
- Market share: 0.002%
⚡ Sites Using H2O
We have data on 67 websites that use the H2O web server. Here is a list of some of the top ranked ones.
The highest rated site using H2O is mourjan.com.
| # | Website | Rank | Country | Language |
|---|---|---|---|---|
| 1 | #42,174 | Arabic | ||
| 2 | #169,268 | Germany | German | |
| 3 | #482,448 | Japan | Japanese | |
| 4 | #574,235 | Japan | Japanese | |
| 5 | #655,199 | Germany | German | |
| 6 | #803,463 | Japan | Japanese | |
| 7 | #901,925 | Japan | Japanese | |
| 8 | #942,265 | Japan | Japanese | |
| 9 | #990,666 | Japan | English | |
| 10 | #1,041,294 | Germany | English | |
| 11 | #1,227,091 | Japan | Japanese | |
| 12 | #1,246,941 | Japan | Japanese | |
| 13 | #1,286,046 | Japan | Japanese | |
| 14 | #1,890,754 | Japan | Japanese | |
| 15 | #2,375,537 | Japan | Japanese | |
| 16 | #2,405,069 | Japan | Japanese | |
| 17 | #3,132,146 | Germany | German | |
| 18 | #3,164,579 | New Zealand | English | |
| 19 | #3,376,958 | New Zealand | English | |
| 20 | #4,178,925 | New Zealand | English |
📈 Usage Statistics
Most of the sites that use H2O:
- are located in New Zealand
- have content in English
- use the .co.nz domain extension
- fall into the Media Sharing category.
Most of the sites using H2O are from New Zealand, Japan, and Germany.
- New Zealand 53.1%
- Japan 29.7%
- Germany 12.5%
- Brazil 1.6%
- Netherlands 1.6%
- Spain 1.6%
Most H2O users speak English, Japanese, or German.
- English 58.7%
- Japanese 25.4%
- German 7.9%
- Spanish 1.6%
- Dutch 1.6%
- Portuguese 1.6%
- Chinese 1.6%
- Arabic 1.6%
The H2O web server is especially popular on .co.nz, .com, and .jp top-level domains.
- .co.nz 44.8%
- .com 19.4%
- .jp 9%
- .de 6%
- .org 4.5%
- .net 3%
- .info 3%
- .nl 1.5%
- .es 1.5%
- Other 7.3%
The primary market segments for websites utilizing H2O include media sharing, job search, and business.
- Media Sharing 20%
- Job Search 13.3%
- Business 13.3%
- Blogs/Wiki 13.3%
- Marketing/Merchandising 6.7%
- Entertainment 6.7%
- Portal Sites 6.7%
- Search Engines 6.7%
- Technical/Business Forums 6.7%
- Other 6.6%
🔢 H2O Versions
The most widespread version of H2O is 2.3, used by 66.7% of sites where versions were detected.
- 2.3 66.7%
- 2.2 33.3%
🕵️ Similar Technologies
These are some of the best H2O alternatives.
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💬 Frequently Asked Questions
Where is H2O from?
H2O is from Tokyo, Japan.
Is H2O free?
Yes, it is a free web server.
It is also an open-source solution, and its code is available on 
GitHub.
Which country uses H2O the most?
The majority of H2O users are from New Zealand.
Who uses H2O?
According to our data, H2O is used on at least 67 sites, including such established ones as mourjan.com,
greenjobs.de, and
peco-japan.com.
Do academic institutions use H2O?
Yes. The most notable of these is suma.ac.jp.
How does H2O compare to its competitors?
H2O is a moderately popular web server, ranking ahead of 11 other web servers we track.
What are the alternatives to H2O?
Alternatives and possible competitors to H2O may include 
Nginx, 
Apache, and 
LiteSpeed Web Server.
🗃️ About This Data
- We evaluate the popularity of technologies based on the number of websites where we detect their usage.
- Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
- This report is based on the analysis of 4,001,723 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.