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 8.5.85 of Apache Tomcat. This release implements specifications that are part of the Java EE 7 platform. The notable changes compared to 8.5.85 include:

• The default value of AccessLogValve's file encoding is now UTF-8.
• Correct a regression in the refactoring that replaced the use of the URL constructors. The regression broke lookups for resources that contained one or more characters in their name that required escaping when used in a URI path.
• When an HTTP/2 stream was reset, the current active stream count was not reduced. If enough resets occurred on a connection, the current active stream count limit was reached and no new streams could be created on that connection.
• Change the default of the org.apache.el.GET_CLASSLOADER_USE_PRIVILEGED system property to true unless the EL library is running on Tomcat in which case the default remains false as the EL library is already called from within a privileged block and skipping the unnecessary privileged block improves performance.

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

Please note that Apache Tomcat 8.5.x will reach End-of-life (EOL) on 31 March 2024.

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The Apache Tomcat Project is proud to announce the release of version 10.1.5 of Apache Tomcat. This release implements specifications that are part of the Jakarta EE 10 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:

• Correct a regression in the refactoring that replaced the use of the URL constructors. The regression broke lookups for resources that contained one or more characters in their name that required escaping when used in a URI path.
• When resetting an HTTP/2 stream because the final response has been generated before the request has been fully read, use the HTTP/2 error code NO_ERROR so that client does not discard the response. Based on a suggestion by Lorenzo Dalla Vecchia.
• Change the default of the org.apache.el.GET_CLASSLOADER_USE_PRIVILEGED system property to true unless the EL library is running on Tomcat in which case the default remains false as the EL library is already called from within a privileged block and skipping the unnecessary privileged block improves performance.

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

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The Apache Tomcat Project is proud to announce the release of version 9.0.71 of Apache Tomcat. This release implements specifications that are part of the Java EE 8 platform. The notable changes compared to 9.0.70 include:

• Correct a regression in the refactoring that replaced the use of the URL constructors. The regression broke lookups for resources that contained one or more characters in their name that required escaping when used in a URI path.
• When resetting an HTTP/2 stream because the final response has been generated before the request has been fully read, use the HTTP/2 error code NO_ERROR so that client does not discard the response. Based on a suggestion by Lorenzo Dalla Vecchia.
• Change the default of the org.apache.el.GET_CLASSLOADER_USE_PRIVILEGED system property to true unless the EL library is running on Tomcat in which case the default remains false as the EL library is already called from within a privileged block and skipping the unnecessary privileged block improves performance.

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

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The Apache Tomcat Project is proud to announce the release of version 11.0.0-M1 (alpha) of Apache Tomcat. This release is a milestone release and is targeted at Jakarta EE 11.

Users of Tomcat 10 onwards should be aware that, as a result of the move from Java EE to Jakarta EE as part of the transfer of Java EE to the Eclipse Foundation, the primary package for all implemented APIs has changed from javax.* to jakarta.*. This will almost certainly require code changes to enable applications to migrate from Tomcat 9 and earlier to Tomcat 10 and later. A migration tool is under development to aid this process.

The notable changes in this release are:

• Alignment with the current development versions of the Jakarta Servlet, Pages and Expression Language specifications. This includes removal of deprecated code and addition of the jakarta.servlet.error.query_string attribute for error dispatches
• BASIC authentication now uses UTF-8 by default
• Conversions from bytes to characters now trigger exceptions rather than replacement for invalid byte sequences for the given encoding

Full details of these changes, and all the other changes, are available in the Tomcat 11 (alpha) changelog.

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The Apache Tomcat Project is proud to announce the release of 1.0.6 of the Apache Tomcat Migration Tool for Jakarta EE. This release contains a number of bug fixes and improvements compared to version 1.0.5.

The notable changes in this release are:

• Correct regression in handling of javax.annotation package introduced in 1.0.5. PR provided by Danny Thomas.
• Allow parallel use of ClassConverter. PR provided by Danny Thomas.

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

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The Apache Tomcat Project is proud to announce the release of version 2.0.2 of Tomcat Native. The notable changes compared to 2.0.1 include:

• The minimum supported version of LibreSSL has been increased to 3.5.2.
• The windows binaries in this release have been built with OpenSSL 3.0.7

Download | ChangeLog for 2.0.1

The Apache Tomcat Project is proud to announce the release of version 10.0.27 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:

• Fix bug 66277, a refactoring regression that broke JSP includes amongst other functionality
• Fix unexpected timeouts that may appear as client disconnections when using HTTP/2 and NIO2
• Enforce the requirement of RFC 7230 onwards that a request with a malformed content-length header should always be rejected with a 400 response.

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

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The Apache Tomcat Project is proud to announce the release of version 1.2.35 of Tomcat Native. The notable changes since 1.2.34 include:

• Windows binaries built with OpenSSL 1.1.1q.
• Document TLS renegotiation behaviour
• Document the release process

Download | ChangeLog for 1.2.35

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.