OpenCms
OpenCms
OpenCms
OpenCms
OpenCms
OpenCms
The easy to use open source CMS
OpenCms
OpenCms
OpenCms
OpenCms
OpenCms
OpenCms
The Java and database driven open source CMS
OpenCms
OpenCms
OpenCms
OpenCms
OpenCms
OpenCms
The centrally managed, multi-tenant open source CMS

OpenCms – Content management for large websites

Easy to use, open source, reliable

OpenCms from Alkacon Software is a powerful, easy-to-use website content management system. OpenCms helps users worldwide to create and manage extensive websites quickly and efficiently.

Download OpenCms 18

Download the latest OpenCms version 18.

Click here to download

Test OpenCms live

Would you like to try out OpenCms? Test OpenCms on our live demo website.

To the live demo

Open Source

As genuine open source software, OpenCms is licence-free.

More information

Alkacon OpenCms Partner

Do you need help with your OpenCms project? We recommend working with an Alkacon OpenCms partner.

Show partners

News and Release notes

Support

Alkacon OpenCms Partner

Source code

On Github

For developers

Technical documentation

For users

Mercury Template Documentation

OpenCms and Docker

OpenCms Docker image

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. ...
Neonlicht mit dem Schriftzug 'Pop' in Rot-Gelb auf einer bunten Glasscheibe.

Documentation website for the Mercury template

The Mercury template is shipped with OpenCms by default. This feature-rich template now has a complete and exhaustive documentation website.
Alkacon OCEE Logo

Alkacon OCEE

Alkacon OCEE is a commercial extension for OpenCms. Alkacon OCEE can significantly improve the speed, reliability and data consistency of an OpenCms installation.