OpenCms - Professional Content Management

Easy to Use, Open Source, Reliable

OpenCms from Alkacon Software is an enterprise-ready open source web content management system (CMS) based on Java and XML. OpenCms is platform independent - Runs on: Windows, Linux, Unix, Solaris, Mac OS. OpenCms supports all top databases: MySQL, Oracle, PostgreSQL, MS SQL. OpenCms works with the most popular Application Servers: Tomcat, JBoss, BEA, Websphere, Glassfish and Resin Professional. OpenCms has a browser based GUI, compatible with all top browsers: Internet Explorer, Mozilla Firefox, Chrome, Safari, Opera. Download OpenCms, the open source enterprise level website content management system, for free.

OpenCms from is a professional, easy to use website content management system. OpenCms helps content managers worldwide to create and maintain beautiful websites fast and efficiently.

The fully browser based user interface features configurable editors for structured content with well defined fields. Alternatively, content can be created using an integrated WYSIWYG editor similar to well known office applications. A sophisticated template engine enforces a site-wide corporate layout and W3C standard compliance for all content.

OpenCms is based on Java and XML technology. It can be deployed in an open source environment (e.g. Linux, Apache, Tomcat, MySQL) as well as on commercial components (e.g.  Windows NT, IIS, BEA Weblogic, Oracle).

As true open source software, OpenCms is free of licensing costs.

OpenCms Headlines

  • OpenCms 11.0.2 available

    OpenCms 11.0.2 OpenCms 11.0.2 is a maintenance release for OpenCms 11. This version fixes a number of issues that have been detected in OpenCms 11.0.1. Also included are a number of security enhancements. more...
  • Alkacon OCEE 11.0.2 for OpenCms 11 available

    Alkacon OpenCms Enterprise Extensions / OCEE Alkacon OCEE 11.0.2 is an important update that fixes issues in the license validation. Alkacon OCEE 11 compared to previous versions brings an all new OCEE user interface as well as improved and more secure cluster configuration options. Moreover, OCEE from version 11 features a new license key mechanisam that allows to share the license key in a cloud installation. more...
  • OpenCms 11.0.1 available

    OpenCms 11.0.1 OpenCms 11.0.1 is a maintenance release for OpenCms 11. This version fixes a number of issues that have been detected in OpenCms 11. Also included are some new features and security enhancements. more...
  • OpenCms 11 available

    OpenCms 11.0.0 OpenCms 11 brings a major update for the workplace. All workplace apps have been replaced with modernized versions. OpenCms 11 also features improvements for template generation, in the editors and for remote management. Moreover, this release is compatible with Java 11 and comes with the new "Mercury" default template. more...

Download OpenCms 11.0

  • OpenCms 11.0.2 is a maintenance release for OpenCms 11. This version fixes a number of issues that have been detected in OpenCms 11.0.1. Also included are some improvements and security enhancements. Compared to version 10, OpenCms 11 brings a major update for the workplace, all apps have been replaced with modernized versions. Moreover, this release is compatible with Java 11 and comes with the new "Mercury" default template.
    Size:211799KB

    Click here to download

Latest News

  • OpenCms 11.0.2 available

    Aug 18, 2020 - OpenCms 11.0.2 is a maintenance release for OpenCms 11. This version fixes a number of issues that have been detected in OpenCms 11.0.1. Also included are a number of security enhancements.

  • Release Notes for OpenCms 11.0.2

    Aug 18, 2020 - The OpenCms 11.0.2 release notes contain detailed information about the new features and fixes in this version.

  • Alkacon OCEE 11.0.2 for OpenCms 11 available

    Aug 14, 2020 - Alkacon OCEE 11.0.2 is an important update that fixes issues in the license validation. Alkacon OCEE 11 compared to previous versions brings an all new OCEE user interface as well as improved and more secure cluster configuration options. Moreover, OCEE from version 11 features a new license key mechanisam that allows to share the license key in a cloud installation.

  • OpenCms 11.0.1 available

    Sep 4, 2019 - OpenCms 11.0.1 is a maintenance release for OpenCms 11. This version fixes a number of issues that have been detected in OpenCms 11. Also included are some new features and security enhancements.

Upgrade OpenCms

  • Update your existing OpenCms installation to the current stable version 11.0.2 with the easy to use upgrade wizard.
    Size:165137KB

    Click here to download

Alkacon OCEE

  • Alkacon Software - The OpenCms Experts

    The Alkacon OpenCms Enterprise Extensions (also called OCEE) are a commercial extension for OpenCms. Alkacon OCEE adds features to OpenCms that are often required for running OpenCms in a medium or large Enterprise, where data consistency, security and failover are highly important.

    Learn more...

Try the OpenCms Live Demo