Tomcat

Welcome to Apache Tomcat!

What Is It?

The Apache Tomcat® software is an open source implementation of the Jakarta
Servlet, Jakarta Pages, Jakarta Expression Language and Jakarta WebSocket
technologies. The Jakarta Servlet, Jakarta Pages, Jakarta Expression Language and
Jakarta WebSocket specifications are developed as part of the
Jakarta EE Platform.

The Apache Tomcat software is developed in an open and participatory
environment and released under the
Apache License version 2. The Apache Tomcat
project is intended to be a collaboration of the best-of-breed developers from
around the world. We invite you to participate in this open development
project. To learn more about getting involved,
click here or keep reading.

Apache Tomcat software powers numerous large-scale, mission-critical web
applications across a diverse range of industries and organizations. Some of
these users and their stories are listed on the
PoweredBy wiki page.

Apache Tomcat, Tomcat, Apache, the Apache feather, and the Apache Tomcat
project logo are trademarks of the Apache Software Foundation.

Get It

For every major Tomcat version there is one download page containing
links to the latest binary and source code downloads, but also
links for browsing the download directories and archives:

• Tomcat 11
• Tomcat 10
• Tomcat 9

To facilitate choosing the right major Tomcat version one, we have provided a
version overview page.

Documentation

The documentation available as of the date of this release is
included in the docs webapp which ships with tomcat. You can access that webapp
by starting tomcat and visiting http://localhost:8080/docs/ in your browser.
The most up-to-date documentation for each version can be found at:

• Tomcat 11
• Tomcat 10
• Tomcat 9

Installation

Please see RUNNING.txt for more information.

Licensing

Please see LICENSE for more information.

Support and Mailing List Information

• Free community support is available through the
  tomcat-users email list.

• If you want freely available support for running Apache Tomcat, please see the
  resources page here.

• If you want to be informed about new code releases, bug fixes,
  security fixes, general news and information about Apache Tomcat, please
  subscribe to the
  tomcat-announce email
  list.

• If you have a concrete bug report for Apache Tomcat, please see the
  instructions for reporting a bug
  here.

Contributing

Please see CONTRIBUTING for more information.