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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.
I can't speak with authority about the replacement Ubuntu Desktop Installer as whilst I'm involved with Ubuntu (and all flavors help each other), we don't always keep up with the technologies we aren't going to be using ourselves (I'm with the Lubuntu team that currently use calamares).
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Hence, a higher number means a more popular project.