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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.
The latter option is better, because it guarantees perfect operation of any MX-style switch, but it requires a specially-designed (or, at minimum, modified) enclosure. Especially if you want the buttons to not be super duper tall. I designed such an enclosure (https://github.com/henrebotha/pangolin), but it's a hassle.
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.