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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.
You might be able to use audacity in the background by setting up an application launcher in the gnome panel that executes xdotool, which can send keyboard signals (like R for record) to running applications: https://github.com/jordansissel/xdotool
NOTE:
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Hence, a higher number means a more popular project.