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owntone-server
Linux/FreeBSD DAAP (iTunes) and MPD media server with support for AirPlay 1 and 2 speakers (multiroom), Apple Remote (and compatibles), Chromecast, Spotify and internet radio.
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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.
Owntone does all of that, including the Home Assistant integration! It also has an API, which you might want to use to get around the somewhat limited HA app.
NOTE:
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Hence, a higher number means a more popular project.