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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.

2021-07-05 Tomcat 8.5.69 Released

The Apache Tomcat Project is proud to announce the release of version 8.5.69 of Apache Tomcat. This release implements specifications that are part of the Java EE 7 platform. The notable changes compared to 8.5.68 include:

  • Re-work the HTTP/2 overhead protection to reduce the likelihood of false positives. Note that the default overheadCountFactor has changed from 1 to 10 and that the useful range is now 0 to ~20.
  • Fix regressions in JSP compilation in the previous release.
  • Improve HTTP header parsing to ignore empty elements in 1#token values, as per RFC 7230 section 7.

Full details of these changes, and all the other changes, are available in the Tomcat 8.5 changelog.

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2021-07-02 Tomcat 9.0.50 Released

The Apache Tomcat Project is proud to announce the release of version 9.0.48 of Apache Tomcat. This release implements specifications that are part of the Java EE 8 platform. The notable changes compared to 9.0.48 include:

  • Re-work the HTTP/2 overhead protection to reduce the likelihood of false positives. Note that the default overheadCountFactor has changed from 1 to 10 and that the useful range is now 0 to ~20.
  • Update to Eclipse JDT compiler 4.20.
  • Fix regressions in JSP compilation in the previous release.

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

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2021-07-02 Tomcat 10.0.8 Released

The Apache Tomcat Project is proud to announce the release of version 10.0.8 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:

  • Re-work the HTTP/2 overhead protection to reduce the likelihood of false positives. Note that the default overheadCountFactor has changed from 1 to 10 and that the useful range is now 0 to ~20.
  • Update to Eclipse JDT compiler 4.20.
  • Fix regressions in JSP compilation in the previous release.

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

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2021-07-02 Tomcat 10.1.0-M2 (alpha) Released

The Apache Tomcat Project is proud to announce the release of version 10.1.0-M2 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:

  • Re-work the HTTP/2 overhead protection to reduce the likelihood of false positives. Note that the default overheadCountFactor has changed from 1 to 10 and that the useful range is now 0 to ~20.
  • Update to Eclipse JDT compiler 4.20.
  • Fix regressions in JSP compilation in the previous release.

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

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2021-06-04 Tomcat Native 1.2.30 Released

The Apache Tomcat Project is proud to announce the release of version 1.2.30 of Tomcat Native. The notable changes since 1.2.28 include:

  • Fix an issue where some Windows systems in some configurations would only listen on IPv6 addresses on dual stack systems even though configured to listen on both IPv6 and IPv4 addresses.
  • Additional fix for bug 65181 (support loading private keys in proprietary formats).

Download | ChangeLog for 1.2.30

2021-05-07 Tomcat Migration Tool for Jakarta EE 1.0.0 Released

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.

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2020-03-06 Tomcat Connectors 1.2.48 Released

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

2015-03-17 Apache Standard Taglib 1.2.5 Released

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

2013-11-11 Tomcat Maven Plugin 2.2 Released

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>

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