indi_focuserlink INDI driver supports FocuserLInk telescope focuser motor.
To start you need to download and install INDI environment. See INDI page for details.
Then FocuserLink INDI driver needs to be fetched and installed:
git clone https://github.com/astrojolo/focuserlink.git
cd focuserlink
mkdir build
cd build
cmake -DCMAKE_INSTALL_PREFIX=/usr ..
make
sudo make install
Then indiserver needs to be started with FocuserLink drivers:
indiserver -v indi_focuserlink
Now FocuserLink can be used with any software that supports INDI drivers, like KStars with Ekos.