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Arena-Tracker
Arena Tracker is a deck tracker that gives you a lot of extra info while playing Hearthstone.
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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.
There is a software that overlays the card winrates. https://github.com/supertriodo/Arena-Tracker/blob/master/Readme/More.md.
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.