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zanarkand
Network capture library for realtime FFXIV Frame and FFXIV Message reading from a TCP/IP stream
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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.
As for Teamcraft's use of NPCAP, Teamcraft is also open source, as is the Zanarkand capture library it uses, so you can see precisely what it's doing with NPCAP. In the case of Teamcraft, a perusal of it and Zanarkand show that it does only read the FFXIV traffic, nothing else, if that helps reassure you.
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