There is a current trend for so-called 'headless' CMS systems. That is, provision of content deliberately divorced from a presentation layer such that other applications can easily consume the content. This usually means that the content is provided in a structured form such as XML or JSON, including the content itself and any associated metadata (lifecycle information, keywords etc.)
Although not originally designed with this in mind, Obtree WCM is eminently suited for this role. It is extremely simple to expose the content as XML, more-or-less out of the box.
Further, because of the underlying object model, it is also straightforward to build a REST interface for editing of the content, should that be a requirement
We believe that this model can extend the life of your software , particularly if there has been many years of editorial investment in content creation.
If this is something you wish to explore further, please get in touch.