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WordDumb
A calibre plugin that generates Kindle Word Wise and X-Ray files for KFX, AZW3, MOBI and EPUB eBook.
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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.
Since that itself is pretty opaque to non-techies, the Wordumb home forum is here, and it looks like the github page you need page is here.
NOTE:
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Hence, a higher number means a more popular project.