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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.
https://github.com/xiv-stats/xiv-sim-documentation/ is another sim, this one runs locally. Someone has to set up a web server and port forwarding, but you might find it more responsive than the web app one. This one is made in Unity and such, but has less mechanic support for now I think. We used the web app one.
NOTE:
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