Apache Tomcat^®

The Apache Tomcat^® software is an open source implementation of the Jakarta Servlet, Jakarta Server Pages, Jakarta Expression Language, Jakarta WebSocket, Jakarta Annotations and Jakarta Authentication specifications. These specifications are part of the Jakarta EE platform.

The Jakarta EE platform is the evolution of the Java EE platform. Tomcat 10 and later implement specifications developed as part of Jakarta EE. Tomcat 9 and earlier implement specifications developed as part of Java EE.

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.

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.

The Apache Tomcat Project is proud to announce the release of version 10.0.16 of Apache Tomcat. This release implements specifications that are part of the Jakarta EE 9 platform.

Applications that run on Tomcat 9 and earlier will not run on Tomcat 10 without changes. Java EE based applications designed for Tomcat 9 and earlier may be placed in the $CATALINA_BASE/webapps-javaee directory and Tomcat will automatically convert them to Jakarta EE and copy them to the webapps directory. This conversion is performed using the Apache Tomcat migration tool for Jakarta EE tool which is also available as a separate download for off-line use.

The notable changes in this release are:

• Add a recycling check in the input and output stream isReady to try to give a more informative ISE when the facade has been recycled.
• Implement support for HTTP/1.1 upgrade when the request includes a body. The maximum permitted size of the body is controlled by maxSavePostSize.
• Improve handling of various cases where one request/response processing thread attempts to manage the asynchronous IO for a different request/response

Full details of these changes, and all the other changes, are available in the Tomcat 10 changelog.

Download

The Apache Tomcat Project is proud to announce the release of version 9.0.58 of Apache Tomcat. This release implements specifications that are part of the Java EE 8 platform. The notable changes compared to 9.0.56 include:

• Add recycling check in the input and output stream isReady to try to give a more informative ISE when the facade has been recycled.
• Implement support for HTTP/1.1 upgrade when the request includes a body. The maximum permitted size of the body is controlled by maxSavePostSize.
• Improve handling of various cases where one request/response processing thread attempts to manage the asynchronous IO for a different request/response.

Full details of these changes, and all the other changes, are available in the Tomcat 9 changelog.

Download

The Apache Tomcat Project is proud to announce the release of version 8.5.75 of Apache Tomcat. This release implements specifications that are part of the Java EE 7 platform. (Note that 8.5.74 was not released, so the previous version was 8.5.73.) The notable changes compared to 8.5.73 include:

• Provide protection against a known OS bug that causes the acceptor to report an incoming connection more than once.
• Implement a workaround for a JVM bug that can trigger a file descriptor leak when using multi-part upload and the application does not explicitly close an input stream for an uploaded file that was cached on disk.
• Fix several potential JVM crashes when using the APR connector.
• Add support for HTTP/1.1 upgrade when the request includes a body. The maximum permitted size of the body is controlled by maxSavePostSize.
• Improve handling of various cases where one request/response processing thread attempts to manage the asynchronous IO for a different request/response.

Full details of these changes, and all the other changes, are available in the Tomcat 8 changelog.

Download

The Apache Tomcat Project is proud to announce the release of version 10.1.0-M10 of Apache Tomcat. This release is a milestone release and is targeted at Jakarta EE 10.

Applications that run on Tomcat 9 and earlier will not run on Tomcat 10 without changes. Java EE based applications designed for Tomcat 9 and earlier may be placed in the $CATALINA_BASE/webapps-javaee directory and Tomcat will automatically convert them to Jakarta EE and copy them to the webapps directory. This conversion is performed using the Apache Tomcat migration tool for Jakarta EE tool which is also available as a separate download for off-line use.

The notable changes in this release are:

• Add a recycling check in the input and output stream isReady to try to give a more informative ISE when the facade has been recycled.
• Implement support for HTTP/1.1 upgrade when the request includes a body. The maximum permitted size of the body is controlled by maxSavePostSize.
• Improve handling of various cases where one request/response processing thread attempts to manage the asynchronous IO for a different request/response

Full details of these changes, and all the other changes, are available in the Tomcat 10.1 (alpha) changelog.

Download

The Apache Tomcat Project is proud to announce the release of version 1.2.31 of Tomcat Native. The notable changes since 1.2.30 include:

• Windows binaries built with OpenSSL 1.1.1l.
• Correct an issue when building with OpenSSl 3.0.0.

Download | ChangeLog for 1.2.30

The Apache Tomcat Project is proud to announce the release of 1.0.0 of the Apache Tomcat Migration Tool for Jakarta EE. This release contains a number of bug fixes and improvements compared to version 0.2.0.

The notable changes in this release are:

• Further fixes to exclude javax.xml packages that are not part of Java EE from the migration.
• The class transformer now validates that the target classes in the Jakarta namespace exist in the runtime environment.

Full details of these changes, and all the other changes, are available in the changelog.

Download

The Apache Tomcat Project is proud to announce the release of version 1.2.48 of Apache Tomcat Connectors. This version fixes a number of bugs found in previous releases.

Download | ChangeLog for 1.2.48

The Apache Tomcat Project is proud to announce the release of version 1.2.5 of the Standard Taglib. This tag library provides Apache's implementation of the JSTL 1.2 specification.

Version 1.2.5 is a minor bug fix release reverting a change made in 1.2.1 where <c:import> modified the HTTP method during POST operations, and fixing an issues that resulted in an AccessControlException during startup unless permission was granted to read the accessExternalEntity property.

Please see the Taglibs section for more details.

Download | Changes

The Apache Tomcat team is pleased to announce the release of Tomcat Maven Plugin 2.2. Changelog available here.

The Apache Tomcat Maven Plugin provides goals to manipulate WAR projects within the Apache Tomcat servlet container.

The binaries are available from Maven repositories. You should specify the version in your project's plugin configuration:

<plugin>
  <groupId>org.apache.tomcat.maven</groupId>
  <artifactId>tomcat7-maven-plugin</artifactId>
  <version>2.2</version>
</plugin>

or

<plugin>
  <groupId>org.apache.tomcat.maven</groupId>
  <artifactId>tomcat6-maven-plugin</artifactId>
  <version>2.2</version>
</plugin>

See former announcements.