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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.
Gloomhaven Secretary is a clone to GHH that we’ve started using. It cover most of your requirements but I’m not sure about remote access as we use it locally.
Gloomhaven Secretariat should work fine remotely. The public server is hosted in Germany, so I already got a complain about latency when accessed overseas, but it can also be run locally, if you're okay with some more technical institutions: https://github.com/Lurkars/ghs-server otherwise the public instance may also completely fulfill your needs.
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