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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 big restriction is that the classic Postscript typefaces are not available (no Times, Helvetica, or Zapf Dingbats), and the PDF file must bundle any fonts it uses.
The pdfsizeopt package will make any PDF smaller, and I think it deletes letters/characters from the included font that are not used.
https://github.com/pts/pdfsizeopt
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Hence, a higher number means a more popular project.