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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.
They do! Although they require a correction factor to better match the government's fancy air quality monitors when measuring smoke. The EPA published a paper on it: https://github.com/shanet/ClearAir/blob/master/docs/PurpleAi...
While we're on the topic: Shamless plug for a PurpleAir clone I made last year that uses the same sensors but at half the cost: https://github.com/shanet/ClearAir and https://www.digikey.com/en/products/detail/adafruit-industri...
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.