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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 personally use this to browse Hacker News. It's great, but sadly it does seem to be somewhat abandoned. The last update was in 2022, and there are a few annoying bugs[0][1][2].
[0]: https://github.com/Mosc/Glider/issues/72
NOTE:
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Hence, a higher number means a more popular project.