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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.
Is it about setting up the website or programming something like that? If you 'only' want to setup such a site for your group check out SEAT https://github.com/eveseat/seat and Alliance Auth https://allianceauth.readthedocs.io/en/v2.8.1/. I think there was another tool too. But those are the most commonly used afaik.
NOTE:
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Hence, a higher number means a more popular project.