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 in the CMS Garden @ LinuxTag 2013

    Check out OpenCms in the CMS garden @ LinuxTag 2013 in Berlin After the great success on CeBIT 2013 Alkacon Software and the OpenCms community will present OpenCms in the CMS Garden at the LinuxTag 2013. This year’s LinuxTag takes place from May 22 to May 25, 2013. The CMS Garden is located in Hall 7 on the Berlin Fairgrounds. more...
  • OpenCms Days 2013 - Save the date!

    This years` OpenCms Days will take place from September 30 to October 1, 2013 in Cologne, Germany. The main topic of the 5th edition of the international user conference and expo will be the release of OpenCms 9. more...
  • OpenCms in the CMS Garden @ CeBIT 2013

    Check out OpenCms in the CMS garden @ CeBit 2013 in Hannover Alkacon Software and the OpenCms community will present OpenCms in the CMS Garden at the CeBIT 2013. CeBIT in Hannover is the world’s largest IT trade fair. This year’s CeBIT takes place from March 5 to March 9, 2013. The CMS Garden is located in Hall 6, close to the open source park. Check out OpenCms in the CMS garden @ CeBit 2013 in Hannover. more...
  • OpenCms 8.5.1 available

    Alkacon and OpenCms logo OpenCms 8.5.1 is released for free download. This update improves the content editor functionality as well as the Solr integration and fixes a lot of issues that persisted in the 8.5.0 release. more...

Download OpenCms

  • OpenCms Version 8.5.1 is available! OpenCms 8.5.1 is an update which improves the content editor functionality as well as the Solr integration. This version also fixes a lot of issues that persisted in the 8.5.0 release. Download OpenCms 8.5.1 for free.
    Size:110242KB

    Click here to download

Upgrade OpenCms

  • Update your existing OpenCms installation to version 8.5.1 with the easy to use upgrade wizard.
    Size:99450KB

    Click here to download

Try the OpenCms Live Demo

Latest News

  • OpenCms in the CMS Garden @ LinuxTag 2013

    May 8, 2013 - After the great success on CeBIT 2013 Alkacon Software and the OpenCms community will present OpenCms in the CMS Garden at the LinuxTag 2013. This year’s LinuxTag takes place from May 22 to May 25, 2013. The CMS Garden is located in Hall 7 on the Berlin Fairgrounds.

  • OpenCms Days 2013 - Save the date!

    Mar 15, 2013 - This years` OpenCms Days will take place from September 30 to October 1, 2013 in Cologne, Germany. The main topic of the 5th edition of the international user conference and expo will be the release of OpenCms 9.

  • OpenCms in the CMS Garden @ CeBIT 2013

    Feb 26, 2013 - Alkacon Software and the OpenCms community will present OpenCms in the CMS Garden at the CeBIT 2013. CeBIT in Hannover is the world’s largest IT trade fair. This year’s CeBIT takes place from March 5 to March 9, 2013. The CMS Garden is located in Hall 6, close to the open source park. Check out OpenCms in the CMS garden @ CeBit 2013 in Hannover.

  • Alkacon OCEE 3.5.1 for OpenCms 8.x released

    Feb 8, 2013 - OCEE is a commercial extension for OpenCms that offers Support for LDAP, Clustering, Replication and accelerated page load times. OCEE increases scalability, availability and fail-over security for mission-critical and high-traffic OpenCms sites.

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  • The opencms-dev mailing list is the place for all questions, comments and suggestions for OpenCms and the main forum of the OpenCms community.

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