RaspberryMatic is a free operating system for your Raspberry Pi, which offers the functionality of an ordinary HomeMatic control panel. Unlike the control panel, however, this is an open development that integrates other helpful features in addition to the standard functions and thus extends beyond the scope of the original control panel. The developers are trying to incorporate improvements so that the system is even more usable for the user. What is special about this project is that the software is 100% compatible with the original software, so you can use any HomeMatic component with this control panel. If you are looking for a free system that you can run on a small single board computer, you should definitely take a look at this software. The community is quite large, so that there is always a solution for various problems.