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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.
PS3 Eye Cam, £3.50 got me a 120hz webcam which offers fantastic headtracking using these drivers, AITrack and OpenTrack. The built in mic isn't terrible either.
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Hence, a higher number means a more popular project.