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dungeoneering
Free and slimmed down virtual tabletop (VTT) that can be used as a combat grid and as a dungeon exploration tool, made for local, in-person tabletop RPG sessions
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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.
I created a simple and free VTT specifically for in-person RPG sessions, it's called dungeoneering. Maybe it might be useful for you and your group. :)
NOTE:
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Hence, a higher number means a more popular project.