Where does the OGS server side code live?

[gennan]

There is some mention if it here that in 2017 the UI became open source:

A short travel through OGS history

Found this thread accidentally, and thought reviving it with new data and summary may be a good idea. online-go.com was started on Nov. 17, 2005 nova.gs was started in Feb. 2013, merged with OGS on Oct. 19, 2013 OGS version 4.0 released in early 2014, 4.2 in Dec. 2014 OGS version 5.0 released on Feb. 13, 2017 v.5.0 structure nginx+uwsgi+django for the app server node for the real time game and chat server redis+postgres for application database Cloudflair CDN as a new feature Migration o…