Download Apache Tomcat 9.0.20 / 8.5.41

Apache Tomcat is a Web container developed by the Apache Software Foundation. Tomcat runs Java Servlets and JavaServer Pages, and provides an http web environment on which Java code can be run directly. For more information, please refer to this page. The developers have released versions 9.0.20 and 8.5.41 with the following announcements:

Tomcat 9.0.20 Released

The Apache Tomcat Project is proud to announce the release of version 9.0.20 of Apache Tomcat. The notable changes compared to 9.0.19 include:

• The useAsyncIO boolean attribute on the Connector element value now defaults to true.
• Stack traces written by the OneLineFormatter are fully identified. The entire stack trace is now identified by an additional TAB character.
• Various HTTP/2 improvements and stability fixes.

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

Tomcat 8.5.41 Released

The Apache Tomcat Project is proud to announce the release of version 8.5.41 of Apache Tomcat. Apache Tomcat 8.5.x replaces 8.0.x and includes new features pulled forward from Tomcat 9.0.x. The minimum Java version and implemented specification versions remain unchanged. The notable changes compared to 8.5.40 include:

• Stack traces written by the OneLineFormatter are fully identified. The entire stack trace is now identified by an additional TAB character.
• Avoid OutOfMemoryErrors and ArrayIndexOutOfBoundsExceptions when accessing large files via the default servlet when resource caching has been disabled.
• When running on newer JREs that don’t support SSLv2Hello, don’t warn that it is not available unless explicitly configured.

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