🆚 H2O vs. Kestrel
- 📈 Kestrel is much more popular than H2O.
- 🌎 Kestrel is more popular in the United States, the United Kingdom, and Brazil.
- 🌍 H2O is more popular in New Zealand.
Statistics based on 3.8M+ analyzed websites. About this data
Type
Web server
Web server
About
H2O is an optimized, open-source HTTP server that supports HTTP/1.x, HTTP/2, and HTTP/3.
Kestrel is an open-source, cross-platform web server for 
ASP.NET Core that can serve HTTP requests on Windows, 
Linux, and macOS.
It uses an event-driven, high-performance architecture to handle many concurrent connections, supports HTTP/1.1, 
HTTP/2, HTTP/3, and 
WebSockets, provides HTTPS support, and integrates closely with the ASP.NET Core middleware pipeline and configuration system.
Headquarters
Tokyo, Japan
Redmond, Washington, United States
Pricing
Free ✔️ Open source
Free ✔️ Open source
Categories
Web Servers › Rank #28
Web Servers › Rank #8
Popularity
Determined by the number of sites using each technology.
The Kestrel web server is 169 times more popular than H2O.
Total websites
Market share
Web Servers
Popularity by country
Determined by the number of sites detected from each country.
Kestrel is more popular in the United States, the United Kingdom, and Brazil, while H2O is more popular in New Zealand.
United States
United Kingdom
Brazil
Netherlands
China
Germany
Italy
Denmark
India
Sweden
Awards
- ⭐ 6th most popular in Turkey in the Web Servers category.
- ⭐ 7th most popular in the United States in the Web Servers category.
- ⭐ 7th most popular in China in the Web Servers category.
- ⭐ 8th most popular in the United Kingdom in the Web Servers category.
- ⭐ 8th most popular in Brazil in the Web Servers category.
Popularity by domain category
Determined by the number of sites in each category.
Kestrel is more popular than H2O in all market segments.
Business
Marketing/Merchandising
Online Shopping
Blogs/Wiki
Motor Vehicles
Internet Services
Education/Reference
Software/Hardware
Travel
Entertainment
Top sites
Top-ranked sites that use these technologies.
Compare alternatives
Technologies with similar characteristics.
🗃️ 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 3,814,833 websites.
- Statistics were last calculated on .
- For more details, see our methodology and disclaimer.