Volantis, maker of the Volantis Mobility Server has done what all of the cool kids are doing, and has started down an open source strategy.

Today, they released a “community” version of their mobility server for free, and it will shortly become GPLv3.

The Volantis Mobility Server, both as a free download and, ultimately, an open source product, includes all the features necessary to deliver corporate content to mobile phones, including:

• a multi channel server, which automatically adapts web markup for mobile and other devices
• the XDIME markup interpreter, which implements the emergent DIAL standard
• development tools, delivered as plugins to the Eclipse open source developers toolkit
• a client side mobile AJAX widget library
• a device database, providing information necessary to render content for specific devices, and including information about more than 4600 devices

Of course, the devil is often in the details of what they opened up, and what is still in the professional version.

You can see the comparison of the products yourself.