🆚 Microsoft IIS vs. Tomcat

Compare technologies based on real-world usage data *

📈 Microsoft IIS is four times more popular than Tomcat.
🌎 Microsoft IIS is more popular in the United States, the United Kingdom, and China.
🌍 Tomcat is more popular in Indonesia, Saint Vincent and the Grenadines, and Bermuda.

Microsoft IIS

Tomcat

Type

Web server

About

Microsoft Internet Information Services (IIS) is an extensible web server developed by Microsoft for Windows systems.

It has a modular architecture with standalone components, supports HTTP, HTTP/2, HTTP/3, HTTPS, FTP, FTPS, SMTP, and NNTP protocols, enables worker process isolation through application pools, and provides native integration with ASP.NET and ASP.NET Core.

Apache Tomcat is an open-source Java application server that implements Java Servlet and Jakarta Server Pages specifications.

Headquarters

Redmond, Washington, United States

Wilmington, Delaware, United States

Website

iis.net #106,574

tomcat.apache.org

Pricing

Free version ✔️IIS Express

Bundled with Windows Server, which is $1,176+

Free ✔️Open source

Popularity

Determined by the number of sites using each technology.

The Microsoft IIS web server is 4 times more popular than Tomcat.

Total websites

Market share

Web Servers

Popularity by country

Determined by the number of sites detected from each country.

Microsoft IIS is more popular in the United States, the United Kingdom, and China, while Tomcat is more popular in Indonesia, Saint Vincent and the Grenadines, and Bermuda.

United States

United Kingdom

China

Italy

Turkey

India

Australia

Netherlands

Canada

Germany

Awards

🥇 Most popular in Brunei Darussalam in the Web Servers category.
🥈 Second most popular in China in the Web Servers category.
🥈 Second most popular in Turkey in the Web Servers category.
🥈 Second most popular in Cambodia in the Web Servers category.
🥉 Third most popular in Italy in the Web Servers category.

⭐ 5th most popular in the United States 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 Indonesia in the Web Servers category.
⭐ 5th most popular in New Zealand in the Web Servers category.

Popularity by domain category

Determined by the number of sites in each category.

Microsoft IIS is more popular among sites focused on business, marketing and merchandising, and education and reference, while Tomcat is more commonly used on blogs and wiki sites.

Business

Marketing/Merchandising

Education/Reference

Online Shopping

Health

Internet Services

Travel

Sports

Software/Hardware

Entertainment