🆚 Kestrel vs. Tomcat

📈 Tomcat is four times more popular than Kestrel.
🌎 Tomcat is more popular in the United States, the United Kingdom, and Australia.
🌎 Kestrel is more popular in Brazil, China, and Turkey.

Statistics based on 3.8M+ analyzed websites. About this data

Kestrel

Tomcat

Type

Web server

About

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.

Apache Tomcat is an open-source Java application server that implements the Jakarta Servlet, Jakarta Server Pages, Jakarta Expression Language, and Jakarta WebSocket specifications.

It provides a servlet container and JSP engine for running Java web applications, supports HTTP/2 and virtual threads, implements a curated subset of Jakarta EE for lightweight deployment, and offers TLS certificate reload without downtime.

Headquarters

Redmond, Washington, United States

Wilmington, Delaware, United States

Website

learn.microsoft.com

tomcat.apache.org

Pricing

Free ✔️ Open source

Popularity

Determined by the number of sites using each technology.

The Tomcat web server is 4 times more popular than Kestrel.

Total websites

Market share

Web Servers

Popularity by country

Determined by the number of sites detected from each country.

Tomcat is more popular in the United States, the United Kingdom, and Australia, while Kestrel is more popular in Brazil, China, and Turkey.

United States

United Kingdom

Australia

Canada

Netherlands

New Zealand

Germany

Norway

Korea

Switzerland

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.

⭐ 4th most popular in the United States in the Web Servers category.
⭐ 4th most popular in New Zealand in the Web Servers category.
⭐ 5th most popular in the United Kingdom in the Web Servers category.
⭐ 5th most popular in Australia in the Web Servers category.
⭐ 5th most popular in Canada in the Web Servers category.

Popularity by domain category

Determined by the number of sites in each category.

Tomcat is more popular among sites focused on business, marketing and merchandising, and education and reference, while Kestrel is more commonly used on motor vehicles sites.

Business

Marketing/Merchandising

Education/Reference

Entertainment

Blogs/Wiki

Non-Profit/Advocacy/NGO

Online Shopping

Restaurants

Travel

Sports

Top sites

Top-ranked sites that use these technologies.

Name

Rank

#30

#91

#205

#253

#1,584

Name

Rank

#1,553

#2,574

#2,788

#3,344

#3,510