Please see https://mne.tools/mne-gui-addons/ for installation instructions, tutorials, and examples for a wide variety of topics, contributing guidelines, and an API ...
This is the server part of CamillaGUI, a web-based GUI for CamillaDSP. This version works with CamillaDSP 3.0.x. The easiest way to run the gui is to download and run one of the published bundles.