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<!DOCTYPE html SYSTEM "about:legacy-compat"> <html lang="en"><head><META http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1"><link href="res/css/tomcat.css" rel="stylesheet" type="text/css"><link href="res/css/fonts/fonts.css" rel="stylesheet" type="text/css"><title>Apache Tomcat® - Which Version Do I Want?</title><meta name="author" content="Marc A. Saegesser"><meta name="author" content="Yoav Shapira"><meta name="author" content="Jean-Frederic Clere"><script src="https://www.apachecon.com/event-images/snippet.js"></script></head><body><div id="wrapper"><header id="header"><div class="clearfix"><div class="menu-toggler pull-left" tabindex="1"><div class="hamburger"></div></div><a href="http://tomcat.apache.org/"><img class="tomcat-logo pull-left noPrint" alt="Tomcat Home" src="res/images/tomcat.png"></a><h1 class="pull-left">Apache Tomcat<sup>®</sup></h1><div class="asf-logos pull-right"><a href="https://www.apache.org/foundation/contributing.html" target="_blank" class="pull-left"><img src="https://www.apache.org/images/SupportApache-small.png" class="support-asf" alt="Support Apache"></a><a href="http://www.apache.org/" target="_blank" class="pull-left"><img src="res/images/asf_logo.svg" class="asf-logo" alt="The Apache Software Foundation"></a></div></div></header><main id="middle"><div><div id="mainLeft"><div id="nav-wrapper"><form action="https://www.google.com/search" method="get"><div class="searchbox"><input value="tomcat.apache.org" name="sitesearch" type="hidden"><input aria-label="Search text" placeholder="Search…" required="required" name="q" id="query" type="search"><button>GO</button></div></form><div class="asfevents"><a class="acevent" data-format="square" data-width="150"></a></div><nav><div><h2>Apache Tomcat</h2><ul><li><a href="./index.html">Home</a></li><li><a href="./taglibs.html">Taglibs</a></li><li><a href="./maven-plugin.html">Maven Plugin</a></li></ul></div><div><h2>Download</h2><ul><li><a href="./whichversion.html">Which version?</a></li><li><a href="https://tomcat.apache.org/download-11.cgi">Tomcat 11</a></li><li><a href="https://tomcat.apache.org/download-10.cgi">Tomcat 10</a></li><li><a href="https://tomcat.apache.org/download-90.cgi">Tomcat 9</a></li><li><a href="https://tomcat.apache.org/download-migration.cgi">Tomcat Migration Tool for Jakarta EE</a></li><li><a href="https://tomcat.apache.org/download-connectors.cgi">Tomcat Connectors</a></li><li><a href="https://tomcat.apache.org/download-native.cgi">Tomcat Native</a></li><li><a href="https://tomcat.apache.org/download-taglibs.cgi">Taglibs</a></li><li><a href="https://archive.apache.org/dist/tomcat/">Archives</a></li></ul></div><div><h2>Documentation</h2><ul><li><a href="./tomcat-11.0-doc/index.html">Tomcat 11.0</a></li><li><a href="./tomcat-10.1-doc/index.html">Tomcat 10.1</a></li><li><a href="./tomcat-9.0-doc/index.html">Tomcat 9.0</a></li><li><a href="./upgrading.html">Upgrading</a></li><li><a href="./connectors-doc/index.html">Tomcat Connectors</a></li><li><a href="./native-doc/index.html">Tomcat Native 2</a></li><li><a href="./native-1.3-doc/index.html">Tomcat Native 1.3</a></li><li><a href="https://cwiki.apache.org/confluence/display/TOMCAT">Wiki</a></li><li><a href="./migration.html">Migration Guide</a></li><li><a href="./presentations.html">Presentations</a></li><li><a href="https://cwiki.apache.org/confluence/x/Bi8lBg">Specifications</a></li></ul></div><div><h2>Problems?</h2><ul><li><a href="./security.html">Security Reports</a></li><li><a href="./findhelp.html">Find help</a></li><li><a href="https://cwiki.apache.org/confluence/display/TOMCAT/FAQ">FAQ</a></li><li><a href="./lists.html">Mailing Lists</a></li><li><a href="./bugreport.html">Bug Database</a></li><li><a href="./irc.html">IRC</a></li></ul></div><div><h2>Get Involved</h2><ul><li><a href="./getinvolved.html">Overview</a></li><li><a href="./source.html">Source code</a></li><li><a href="./ci.html">Buildbot</a></li><li><a href="./tools.html">Tools</a></li></ul></div><div><h2>Media</h2><ul><li><a href="https://twitter.com/theapachetomcat">Twitter</a></li><li><a href="https://www.youtube.com/c/ApacheTomcatOfficial">YouTube</a></li><li><a href="https://blogs.apache.org/tomcat/">Blog</a></li></ul></div><div><h2>Misc</h2><ul><li><a href="./whoweare.html">Who We Are</a></li><li><a href="https://www.redbubble.com/people/comdev/works/30885254-apache-tomcat">Swag</a></li><li><a href="./heritage.html">Heritage</a></li><li><a href="http://www.apache.org">Apache Home</a></li><li><a href="./resources.html">Resources</a></li><li><a href="./contact.html">Contact</a></li><li><a href="./legal.html">Legal</a></li><li><a href="https://privacy.apache.org/policies/privacy-policy-public.html">Privacy</a></li><li><a href="https://www.apache.org/foundation/contributing.html">Support Apache</a></li><li><a href="https://www.apache.org/foundation/sponsorship.html">Sponsorship</a></li><li><a href="http://www.apache.org/foundation/thanks.html">Thanks</a></li><li><a href="http://www.apache.org/licenses/">License</a></li></ul></div></nav></div></div><div id="mainRight"><div id="content"><h2 style="display: none;">Content</h2><h3 id="Apache_Tomcat_Versions">Apache Tomcat Versions</h3><div class="text"> <p>Apache Tomcat<sup>®</sup> is an open source software implementation of a subset of the Jakarta EE (formally Java EE) technologies. Different versions of Apache Tomcat are available for different versions of the specifications. The mapping between <a href="https://cwiki.apache.org/confluence/display/TOMCAT/Specifications">the specifications</a> and the respective Apache Tomcat versions is: </p> <div class="subsection"><h4 id="Currently_Supported_Versions">Currently Supported Versions</h4><div class="text"> <table class="detail-table"> <tr> <th><strong>Servlet Spec</strong></th> <th><strong>JSP Spec</strong></th> <th><strong>EL Spec</strong></th> <th><strong>WebSocket Spec</strong></th> <th><strong>Authentication Spec (JASPIC)</strong></th> <th><strong>Apache Tomcat Version</strong></th> <th><strong>Latest Released Version</strong></th> <th><strong>Supported Java Versions</strong></th> </tr> <tr> <td>6.1</td> <td>4.0</td> <td>6.0</td> <td>2.2</td> <td>3.1</td> <td>11.0.x</td> <td>11.0.1</td> <td>17 and later</td> </tr> <tr> <td>6.0</td> <td>3.1</td> <td>5.0</td> <td>2.1</td> <td>3.0</td> <td>10.1.x</td> <td>10.1.33</td> <td>11 and later</td> </tr> <tr> <td>4.0</td> <td>2.3</td> <td>3.0</td> <td>1.1</td> <td>1.1</td> <td>9.0.x</td> <td>9.0.97</td> <td>8 and later</td> </tr> </table> </div></div> <div class="subsection"><h4 id="Unsupported_Versions">Unsupported Versions</h4><div class="text"> <p> These versions of Apache Tomcat have reached end-of-life and users are encouraged to upgrade to a supported version. </p> <table class="detail-table"> <tr> <th><strong>Servlet Spec</strong></th> <th><strong>JSP Spec</strong></th> <th><strong>EL Spec</strong></th> <th><strong>WebSocket Spec</strong></th> <th><strong>Authentication Spec (JASPIC)</strong></th> <th><strong>Apache Tomcat Version</strong></th> <th><strong>Final<sup><a href="#final_release_note" style="color:white">1</a></sup> Released Version</strong></th> <th><strong>Supported Java Versions</strong></th> <th>EOL Date</th> </tr> <tr> <td>5.0</td> <td>3.0</td> <td>4.0</td> <td>2.0</td> <td>2.0</td> <td>10.0.x (superseded)</td> <td>10.0.27 (superseded)</td> <td>8 and later</td> <td><a href="https://tomcat.apache.org/tomcat-10.0-eol.html">2022-10-31</a></td> </tr> <tr> <td>3.1</td> <td>2.3</td> <td>3.0</td> <td>1.1</td> <td>1.1</td> <td>8.5.x (<a href="https://tomcat.apache.org/tomcat-85-eol.html"><abbr title="End of Life">EOL</abbr></a>)</td> <td>8.5.100 (<a href="https://tomcat.apache.org/tomcat-85-eol.html"><abbr title="End of Life">EOL</abbr></a>)</td> <td>7 and later</td> <td><a href="https://tomcat.apache.org/tomcat-85-eol.html">2024-03-31</a></td> </tr> <tr> <td>3.1</td> <td>2.3</td> <td>3.0</td> <td>1.1</td> <td>N/A</td> <td>8.0.x (superseded)</td> <td>8.0.53 (superseded)</td> <td>7 and later</td> <td><a href="https://tomcat.apache.org/tomcat-80-eol.html">2018-06-30</a></td> </tr> <tr> <td>3.0</td> <td>2.2</td> <td>2.2</td> <td>1.1</td> <td>N/A</td> <td>7.0.x (archived)</td> <td>7.0.109 (archived)</td> <td>6 and later<br> (7 and later for WebSocket)</td> <td><a href="https://tomcat.apache.org/tomcat-70-eol.html">2021-03-31</a></td> </tr> <tr> <td>2.5</td> <td>2.1</td> <td>2.1</td> <td>N/A</td> <td>N/A</td> <td>6.0.x (archived)</td> <td>6.0.53 (archived)</td> <td>5 and later</td> <td><a href="https://tomcat.apache.org/tomcat-60-eol.html">2016-12-31</a></td> </tr> <tr> <td>2.4</td> <td>2.0</td> <td>N/A</td> <td>N/A</td> <td>N/A</td> <td>5.5.x (archived)</td> <td>5.5.36 (archived)</td> <td>1.4 and later</td> <td><a href="https://tomcat.apache.org/tomcat-55-eol.html">2012-09-31</a></td> </tr> <tr> <td>2.3</td> <td>1.2</td> <td>N/A</td> <td>N/A</td> <td>N/A</td> <td>4.1.x (archived)</td> <td>4.1.40 (archived)</td> <td>1.3 and later</td> <td><a href="https://lists.apache.org/thread/v1ccn429s9lh32ypvwwhxo26zhh1965c">2009-06-25</a></td> </tr> <tr> <td>2.2</td> <td>1.1</td> <td>N/A</td> <td>N/A</td> <td>N/A</td> <td>3.3.x (archived)</td> <td>3.3.2 (archived)</td> <td>1.1 and later</td> <td><a href="https://lists.apache.org/thread/nw4vpbwgrn480gsvn06f4qj4yhoo89v7">2004-03-09</a></td> </tr> <tr> <td colspan="9" id="final_release_note"><a name="final_release_note">*</a> "Final" versions are never <i>absolutely</i> final, but releases after these are extraordinarily unlikely. </td> </tr> </table> </div></div> <p>Each version of Tomcat is supported for any stable Java release that meets the requirements of the final column in the table above.</p> <p>Tomcat should also work on any Java early access build that meets the requirements of the final column in the table above. For example, users were successfully running Tomcat 8 on Java 8 many months before the first stable Java 8 release. However, users of early access builds should be aware of the following:</p> <ul> <li>It is not unusual for the initial early access builds to contain bugs that can cause problems for web applications running on Tomcat.</li> <li>If the new Java version introduces new language features then the default JSP compiler may not support them immediately. Switching the JSP compiler to javac may enable these new language features to be used in JSPs.</li> <li>If you do discover an problem using a Java early access build, please <a href="findhelp.html">ask for help</a>. The Tomcat user's mailing list is probably the best place to start.</li> </ul> <p>The releases are described in more detail below to help you determine which one is right for you. More details about each release can be found in the associated release notes.</p> <p>Please note that although we offer downloads and documentation of older releases, such as Apache Tomcat 7.x, we strongly encourage users to use the latest stable version of Apache Tomcat whenever possible. We recognize that upgrading across major versions may not be a trivial task, and some support is still offered on the mailing list for users of old versions. However, because of the community-driven support approach, the older your version, fewer people will be interested or able to support you. </p> </div><h3 id="Alpha_/_Beta_/_Stable">Alpha / Beta / Stable</h3><div class="text"> <p>When voting for a release, reviewers specify the stability level that they consider the release has reached. Initial releases of a new major version typically process from Alpha, through Beta to Stable over a period of several months. However, the Stable level is only available once the Java specifications the release implements have been finalised. This means a release that in all other respects is considered stable, may still be labelled as Beta if the specifications are not final.</p> <p>The download pages will always show the latest stable release and any newer Alpha or Beta release if one exists. Alpha and beta releases are always clearly marked on the download pages.</p> <p>Stability is a subjective judgement and you should always read carefully the release notes for any version you intend to make use of. If you are an early adopter of a release, we would love to hear your opinion about its stability as part of the vote: it takes place on the <a href="lists.html">development mailing list</a>.</p> <p><strong>Alpha</strong> releases may contain large amounts of untested/missing functionality required by the specification and/or significant bugs and are not expected to run stably for any length of time.</p> <p><strong>Beta</strong> releases may contain some untested functionality and/or a number of relatively minor bugs. Beta releases are not expected to run stably. </p> <p><strong>Stable</strong> releases may contain a small number of relatively minor bugs. Stable releases are intended for production use and are expected to run stably for extended periods of time.</p> </div><h3 id="Supported_Version_Details">Supported Version Details</h3><div class="text"> <h3 id="Apache_Tomcat_11.0.x_(Alpha)">Apache Tomcat 11.0.x (Alpha)</h3><div class="text"> <p><strong>Apache Tomcat 11.0.x</strong> is the current focus of development. It builds on Tomcat 10.1.x and implements the <strong>Servlet 6.1</strong>, <strong>JSP 4.0</strong>, <strong>EL 6.0</strong>, <strong>WebSocket 2.2</strong> and <strong>Authentication 3.1</strong> specifications (the versions required by Jakarta EE 11 platform). </p> </div> <h3 id="Apache_Tomcat_10.1.x_(Stable)">Apache Tomcat 10.1.x (Stable)</h3><div class="text"> <p><strong>Apache Tomcat 10.1.x</strong> builds on Tomcat 10.0.x and implements the <strong>Servlet 6.0</strong>, <strong>JSP 3.1</strong>, <strong>EL 5.0</strong>, <strong>WebSocket 2.1</strong> and <strong>Authentication 3.0</strong> specifications (the versions required by Jakarta EE 10 platform). </p> </div> <h3 id="Apache_Tomcat_9.x_(Stable)">Apache Tomcat 9.x (Stable)</h3><div class="text"> <p><strong>Apache Tomcat 9.x</strong> builds on Tomcat 8.0.x and 8.5.x and implements the <strong>Servlet 4.0</strong>, <strong>JSP 2.3</strong>, <strong>EL 3.0</strong>, <strong>WebSocket 1.1</strong> and <strong>JASPIC 1.1</strong> specifications (the versions required by Java EE 8 platform). In addition to this, it includes the following significant improvements: </p> <ul> <li>Adds support for HTTP/2 (requires either running on Java 9 (since Apache Tomcat 9.0.0.M18) or the <a href="/native-doc/">Tomcat Native</a> library being installed) </li> <li>Adds support for using OpenSSL for TLS support with the JSSE connectors (NIO and NIO2) </li> <li>Adds support for TLS virtual hosting (SNI)</li> </ul> </div> </div><h3 id="Unsupported_Version_Details">Unsupported Version Details</h3><div class="text"> <h3 id="Apache_Tomcat_10.0.x_(superseded)">Apache Tomcat 10.0.x (superseded)</h3><div class="text"> <p><strong>Apache Tomcat 10.0.x</strong> builds on Tomcat 9.0.x and implements the <strong>Servlet 5.0</strong>, <strong>JSP 3.0</strong>, <strong>EL 4.0</strong>, <strong>WebSocket 2.0</strong> and <strong>Authentication 2.0</strong> specifications (the versions required by Jakarta EE 9 platform). </p> <p>Users of Tomcat 10.0 should be aware that Tomcat 10.0 has now reached <a href="tomcat-10.0-eol.html">end of life</a>. Users of Tomcat 10.0.x should upgrade to Tomcat 10.1.x or later.</p> </div> <h3 id="Apache_Tomcat_8.x_(EOL)">Apache Tomcat 8.x (EOL)</h3><div class="text"> <p><strong>Apache Tomcat 8.0.x</strong> builds on Tomcat 7.0.x and implements the <strong>Servlet 3.1</strong>, <strong>JSP 2.3</strong>, <strong>EL 3.0</strong> and <strong>WebSocket 1.1</strong> specifications. In addition to that, it includes the following significant improvements: </p> <ul> <li>A single, common resources implementation to replace the multiple resource extension features provided in earlier versions.</li> </ul> <p> <strong>Apache Tomcat 8.5.x</strong> supports the same Servlet, JSP, EL, and WebSocket Specification versions as Apache Tomcat 8.0.x. In addition to that, it also implements the <strong>JASPIC 1.1</strong> specification. </p> <p> It was created in March 2016 as a fork from Tomcat 9.0.0.M4 (alpha) milestone release. It provides HTTP/2 support and other features from Tomcat 9.x codebase, while being compatible with Tomcat 8.0 runtime and specification requirements. (A stable release of Tomcat 9.0 could not be created at that time, as Java EE specifications targeted by Tomcat 9 were finalized only a few years later). </p> <p>Tomcat 8.5 is thought as a replacement for Tomcat 8.0. Please refer to <a href="/migration.html">Migration guide</a> for guidance on migrating to Tomcat 8.5.</p> <p> Apache Tomcat 8.5.x includes the following significant improvements: </p> <ul> <li>Adds support for HTTP/2 (requires the <a href="/native-doc/">Tomcat Native</a> library)</li> <li>Adds support for using OpenSSL for TLS support with the JSSE connectors (NIO and NIO2) </li> <li>Adds support for TLS virtual hosting (SNI)</li> </ul> <p>The following technologies were removed in Apache Tomcat 8.5.x:</p> <ul> <li>BIO implementation of HTTP and AJP connectors</li> <li>Support for Comet API</li> </ul> <p>There are significant changes in many areas under the hood, resulting in improved performance, stability, and total cost of ownership. Please refer to the Apache Tomcat 8.5 Changelog for details. </p> <p>Users of Tomcat 8.0 should be aware that Tomcat 8.0 has now reached <a href="tomcat-80-eol.html">end of life</a>. Users of Tomcat 8.0.x should upgrade to Tomcat 8.5.x or later.</p> <p>Users of Tomcat 8.5 should be aware that Tomcat 8.5 has now reached <a href="tomcat-85-eol.html">end of life</a>. Users of Tomcat 8.5.x should upgrade to Tomcat 9.0.x or later.</p> </div> <h3 id="Apache_Tomcat_7.x_(archived)">Apache Tomcat 7.x (archived)</h3><div class="text"> <p><strong>Apache Tomcat 7.x</strong> builds upon the improvements made in Tomcat 6.0.x and implements the <strong>Servlet 3.0</strong>, <strong>JSP 2.2</strong>, <strong>EL 2.2</strong> and <strong>WebSocket 1.1</strong> specifications. In addition to that, it includes the following improvements: </p> <ul> <li>Web application memory leak detection and prevention</li> <li>Improved security for the Manager and Host Manager applications</li> <li>Generic CSRF protection</li> <li>Support for including external content directly in a web application</li> <li>Refactoring (connectors, lifecycle) and lots of internal code clean-up</li> </ul> <p>Users of Tomcat 7 should be aware that Tomcat 7 has now reached <a href="tomcat-70-eol.html">end of life</a>. Users of Tomcat 7.x should upgrade to Tomcat 8.5.x or later.</p> </div> <h3 id="Apache_Tomcat_6.x_(archived)">Apache Tomcat 6.x (archived)</h3><div class="text"> <p><strong>Apache Tomcat 6.x</strong> builds upon the improvements made in Tomcat 5.5.x and implements the <strong>Servlet 2.5</strong> and <strong>JSP 2.1</strong> specifications. In addition to that, it includes the following improvements: </p> <ul> <li>Memory usage optimizations</li> <li>Advanced IO capabilities</li> <li>Refactored clustering</li> </ul> <p>Users of Tomcat 6 should be aware that Tomcat 6 has now reached <a href="tomcat-60-eol.html">end of life</a>. Users of Tomcat 6.x should upgrade to Tomcat 7.x or later.</p> </div> <h3 id="Apache_Tomcat_5.x_(archived)">Apache Tomcat 5.x (archived)</h3><div class="text"> <p><strong>Apache Tomcat 5.x</strong> is available for download from the archives.</p> <p><strong>Apache Tomcat 5.5.x</strong> supports the same Servlet and JSP Specification versions as Apache Tomcat 5.0.x. There are significant changes in many areas under the hood, resulting in improved performance, stability, and total cost of ownership. Please refer to the Apache Tomcat 5.5 Changelog for details. </p> <p><strong>Apache Tomcat 5.0.x</strong> improves on Apache Tomcat 4.1 in many ways, including:</p> <ul> <li>Performance optimizations and reduced garbage collection</li> <li>Refactored application deployer, with an optional standalone deployer allowing validation and compilation of a web application before putting it in production</li> <li>Complete server monitoring using JMX and the manager web application</li> <li>Scalability and reliability enhancements</li> <li>Improved Taglibs handling, including advanced pooling and tag plugins</li> <li>Improved platform integration, with native Windows and Unix wrappers</li> <li>Embedding using JMX</li> <li>Enhanced Security Manager support</li> <li>Integrated session clustering</li> <li>Expanded documentation</li> </ul> <p>Users of Tomcat 5 should be aware that Tomcat 5 has now reached <a href="tomcat-55-eol.html">end of life</a>. Users of Tomcat 5.x should upgrade to Tomcat 7.x or later.</p> </div> <h3 id="Apache_Tomcat_4.x_(archived)">Apache Tomcat 4.x (archived)</h3><div class="text"> <p><strong>Apache Tomcat 4.x</strong> is available for download from the archives.</p> <p><strong>Apache Tomcat 4.x</strong> implements a new servlet container (called Catalina) that is based on completely new architecture. The 4.x releases implement the <strong>Servlet 2.3</strong> and <strong>JSP 1.2</strong> specifications.</p> <p><strong>Apache Tomcat 4.1.x</strong> is a refactoring of Apache Tomcat 4.0.x, and contains significant enhancements, including:</p> <ul> <li>JMX based administration features</li> <li>JSP and Struts based administration web application</li> <li>New Coyote connector (HTTP/1.1, AJP 1.3 and JNI support)</li> <li>Rewritten Jasper JSP page compiler</li> <li>Performance and memory efficiency improvements</li> <li>Enhanced manager application support for integration with development tools</li> <li>Custom Ant tasks to interact with the manager application directly from build.xml scripts</li> </ul> <p><strong>Apache Tomcat 4.0.x</strong>. Apache Tomcat 4.0.6 is the old production quality release. The 4.0 servlet container (Catalina) has been developed from the ground up for flexibility and performance. Version 4.0 implements the final released versions of the Servlet 2.3 and JSP 1.2 specifications. As required by the specifications, Apache Tomcat 4.0 also supports web applications built for the Servlet 2.2 and JSP 1.1 specifications with no changes.</p> <p>Users of Tomcat 4 should be aware that Tomcat 4 has now reached end of life. Users of Tomcat 4.x should upgrade to Tomcat 7.x or later.</p> </div> <h3 id="Apache_Tomcat_3.x_(archived)">Apache Tomcat 3.x (archived)</h3><div class="text"> <p><strong>Apache Tomcat 3.x</strong> is available for download from the archives.</p> <ul> <li>Version <strong>3.3</strong> is the current production quality release for the Servlet 2.2 and JSP 1.1 specifications. Apache Tomcat 3.3 is the latest continuation of the Apache Tomcat 3.x architecture; it is more advanced then 3.2.4, which is the 'old' production quality release.</li> <li>Version 3.2.4 is the 'old' production quality release and is now in maintenance only mode.</li> <li>Version 3.1.1 is a legacy release.</li> </ul> <p> All <strong>Apache Tomcat 3.x</strong> releases trace their heritage back to the original Servlet and JSP implementations that Sun donated to the Apache Software Foundation. The 3.x versions all implement the <strong>Servlet 2.2</strong> and <strong>JSP 1.1</strong> specifications. </p> <p><strong>Apache Tomcat 3.3.x</strong>. Version 3.3.2 is the current production quality release. It continues the refactoring that was begun in version 3.2 and carries it to its logical conclusion. Version 3.3 provides a much more modular design and allows the servlet container to be customized by adding and removing modules that control the processing of servlet requests. This version also contains many performance improvements.</p> <p><strong>Apache Tomcat 3.2.x</strong>. Version 3.2 added few new features since 3.1; the major effort was a refactoring of the internals to improve performance and stability. The 3.2.1 release, like 3.1.1, was a security patch. Version 3.2.2 fixed a large number of bugs and all known specification compliance issues. Version 3.2.3 was a security update that closes a serious security hole. Version 3.2.4 is a minor bug fix release. All users of Apache Tomcat versions prior to 3.2.3 should upgrade as soon as possible. With the exception of fixes for critical security related bugs, development on the Apache Tomcat 3.2.x branch has stopped.</p> <p><strong>Apache Tomcat 3.1.x</strong>. The 3.1 release contained several improvements over Apache Tomcat 3.0, including servlet reloading, WAR file support and added connectors for the IIS and Netscape web servers. The latest maintenance release, 3.1.1, contained fixes for security problems. There is no active development ongoing for Apache Tomcat 3.1.x. Users of Apache Tomcat 3.1 should update to 3.1.1 to close the security holes and they are strongly encouraged to migrate to the current production release, Apache Tomcat 3.3.</p> <p><strong>Apache Tomcat 3.0.x</strong>. Initial Apache Tomcat release.</p> <p>Users of Tomcat 3 should be aware that Tomcat 3 has now reached end of life. Users of Tomcat 3.x should upgrade to Tomcat 7.x or later.</p> </div> </div></div></div></div></main><footer id="footer"> Copyright © 1999-2024, The Apache Software Foundation <br> Apache Tomcat, Tomcat, Apache, the Apache Tomcat logo and the Apache logo are either registered trademarks or trademarks of the Apache Software Foundation. </footer></div><script src="res/js/tomcat.js"></script></body></html>