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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.
Many games have open source launchers, and it's really easy to get them running with Luxtorpeda. Haven't got a steam deck but it should just work.
There's openjazz at least, if not an official port.
NOTE:
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Hence, a higher number means a more popular project.