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

  • Alkacon OCEE 5.5.0 for OpenCms 10.5.0 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...
  • Introducing OpenCms 10.5

    OpenCms 10.5 OpenCms 10.5 focuses on site localization, adding tools for assisted translation of pages and sitemaps. Many usability improvements have been made for the Page Editor and the Explorer. OpenCms 10.5 also ships a much improved version of the Apollo Template. Based on Bootstrap, the Apollo Template is fully customizable without coding. more...
  • OpenCms Docker image

    OpenCms and Docker Test OpenCms 10.5 using the official image from the Docker hub registry - the fastest way to evaluate and test OpenCms. more...
  • OpenCms documentation and demo sites

    The updated OpenCms live demo website We have launched a new OpenCms documentation site and updated the demo site for OpenCms 10.5. The new OpenCms Documentation Central connects all relevant sources of information about OpenCms. more...

Download OpenCms

  • Introducing OpenCms 10.5. This release focuses on site localization, adding tools for assisted translation of pages and sitemaps. Many usability improvements have been made for the Page Editor and the Explorer. OpenCms 10.5 also ships a much improved version of the Apollo Template.
    Size:155992KB

    Click here to download

Upgrade OpenCms

  • Update your existing OpenCms installation to the current stable version 10.5.0 with the easy to use upgrade wizard.
    Size:121923KB

    Click here to download

Latest News

  • Alkacon OCEE 5.5.0 for OpenCms 10.5.0 available

    Dec 9, 2016 - 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.

  • Introducing OpenCms 10.5

    Nov 30, 2016 - OpenCms 10.5 focuses on site localization, adding tools for assisted translation of pages and sitemaps. Many usability improvements have been made for the Page Editor and the Explorer. OpenCms 10.5 also ships a much improved version of the Apollo Template. Based on Bootstrap, the Apollo Template is fully customizable without coding.

  • OpenCms 10.5 Release Notes

    Nov 30, 2016 - The OpenCms 10.5 release notes contain detailed information about the new features and fixes in this version.

  • OpenCms Docker image

    Nov 30, 2016 - Test OpenCms 10.5 using the official image from the Docker hub registry - the fastest way to evaluate and test OpenCms.

Download OpenCms Beta

  • Try OpenCms 10.5 Beta! This beta release provides a complete look at the features of the next OpenCms generation.
    Size:153401KB

    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