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 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...
  • OpenCms 10.5.4 available

    OpenCms 10.5.4 While the Alkacon team is currently working hard on OpenCms version 11, another maintenance release 10.5.4 for OpenCms 10.5 is now ready for download, fixing some security issues. A new version of Alkacon OCEE for 10.5.4 is also available. more...
  • Alkacon OCEE 5.5 for OpenCms 10.5 available

    Alkacon OpenCms Enterprise Extensions / OCEE OCEE 5.5.0 supports OpenCms 10.5.0 and brings seveal improvements to the LDAP Connector. It also adds more shell commands for remote cluster administration, and fixes some issues. Updated OCEE packages for 10.0, 9.x and 8.x based OpenCms installations are also available. 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. more...

Download OpenCms 11.0

  • The OpenCms 11.0.0 release 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.
    Size:198013KB

    Click here to download

Latest News

  • OpenCms 11 available

    Apr 30, 2019 - 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.

  • OpenCms 11 Release Notes

    Apr 30, 2019 - The OpenCms 11 release notes contain detailed information about the new features and fixes in this version.

  • OpenCms 11 release candidate available

    Mar 29, 2019 - OpenCms 11 release candidate provides you with a comprehensive overview about the features of the next OpenCms generation. Try out this pre-release version before OpenCms 11.0.0 is published, which is expected by the end of April 2019. OpenCms 11 brings a major update for the workplace providing better usability and performance. Further enhancements include a new default template, automated image generation, core support for dynamic contents lists and meta-mappings for SEO.

  • OpenCms 11 RC Release Notes

    Mar 29, 2019 - The OpenCms 11 RC release notes contain detailed information about the new features and fixes in this release candidate.

Upgrade OpenCms

  • Update your existing OpenCms installation to the current stable version 11.0.0 with the easy to use upgrade wizard.
    Size:161186KB

    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