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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 can also get F-Droid Build Status which I believe will let you see apps that are being attempted to be built even if their build isn't succeeding yet, again for the "catching things early experience". Or, just keep an eye on the issues, merge requests and commits at fdroiddata which is where people actually add new metadata for new apps to be built by F-Droid, and it often takes a while between an app being first mentioned, and it being able to be included, for many possible reasons.
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.