-
InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
It looks like the Spotify extension might not currently work but consider watching Mopidy
Moosync whilst technically not a server, is a client which allows streaming from a bunch of services (tidal, spotify, soundcloud, youtube, and radio).
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.