The current version of Holodeck B2B is 6.1, released under the GNU GPL 3 license. This version includes a Certificate Manager, support for asynchronous 2-way AS4 messaging and a GUI for gateway monitoring among many other features.


The quickest way to get Holodeck B2B is by downloading the binary from the GitHub website:

Download Holodeck B2B

The binary package does not include a Java runtime. You will need to install a JRE version 8 or later to run Holodeck B2B.


Want to learn about the Holodeck B2B internals, help with development or create your own extension? Have a look at the source code or check out the sources via
git clone

Getting started

Looking for help? You can find a quick-start guide and more information about configuring message exchanges under Documentation. There’s also lots of information in the code comments.

Still left with questions? We offer a support contract providing you help directly from the developers. Contact us!