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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.
Finally, in the game development world, the best open source GUI available is called "Dear ImGui", it can run in any SDL/OpenGL program. I just checked and it seems there are nice Haskell bindings: https://github.com/haskell-game/dear-imgui.hs
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