I made a new plugin to communicate to homegear (https://www.homegear.eu) via xml-rpc, which is quite handy if the CUL stick is used to communicate with homematic or max! devices.
You can find the source on github https://github.com/meyerd/pimatic-homegear and the npm package https://www.npmjs.com/package/pimatic-homegear.
@sweetpi feel free to add it to the plugins page.
Currently, only the homematic thermostat devices are supported, since I only have those at hand to test. Also a lot of possible features from homegear are not exposed yet.