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 15 available

    OpenCms 15 OpenCms 15 provides role-based control to restrict who is allowed to update the sitemap configuration, including an editor for modifying selected sitemap attributes by any content manager. The new launchpad app "Person data search" reveals personal user data stored in the VFS. The Mercury template adds more than 1800 optional icons from the Bootstrap collection and numerous further enhancements. more...
  • Alkacon OCEE 15

    Alkacon OpenCms Enterprise Extensions / OCEE Alkacon OCEE 15 is the latest OCEE release for OpenCms 15. This version features a new scheduled job for LDAP synchronization and fixes a number of issues that have been detected in Alkacon OCEE 14. more...
  • OpenCms Docker image

    OpenCms and Docker Test OpenCms using the official image from the Docker hub registry - the fastest way to evaluate and test OpenCms. The image is well suited for evaluation and test purposes of the latest OpenCms release. We provide a docker-compose file to get OpenCms and the database running with just one command. more...
  • OpenCms documentation and demo sites

    The updated OpenCms live demo website We have updated the OpenCms documentation site as well as the demo site for OpenCms 14. The OpenCms Documentation Central connects all relevant sources of information about OpenCms. more...

Download OpenCms 15

  • OpenCms 15 provides role-based control to restrict who is allowed to update the sitemap configuration, including an editor for modifying selected sitemap attributes by any content manager. The new launchpad app "Person data search" reveals personal user data stored in the VFS. The Mercury template adds more than 1800 optional icons from the Bootstrap collection and numerous further enhancements.
    Size:241246KB

    Click here to download

Upgrade to OpenCms 15

  • Update your existing OpenCms installation to the current stable version 15 with the easy to use upgrade wizard.
    Size:192669KB

    Click here to download

Latest News

  • OpenCms 15 available

    Apr 25, 2023 - OpenCms 15 provides role-based control to restrict who is allowed to update the sitemap configuration, including an editor for modifying selected sitemap attributes by any content manager. The new launchpad app "Person data search" reveals personal user data stored in the VFS. The Mercury template adds more than 1800 optional icons from the Bootstrap collection and numerous further enhancements.

  • OpenCms 15 Release Notes

    Apr 25, 2023 - The OpenCms 15 release notes contain detailed information about the new features and fixes in this version.

  • Alkacon OCEE 15

    Apr 25, 2023 - Alkacon OCEE 15 is the latest OCEE release for OpenCms 15. This version features a new scheduled job for LDAP synchronization and fixes a number of issues that have been detected in Alkacon OCEE 14.

  • OpenCms 14 available

    Oct 11, 2022 - This version features XML schema versioning with automatic content rewrite. Also new is support for two factor authentication (2FA) in the user login. A source code editor widget is available for multi-line text input fields. The Mercury template has been updated to use Bootstrap 5.2.

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