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friendup
FriendOS is a free web based platform that runs in your browser. It allows you to work and play, collaboratively, across devices.
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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.
He was probably thinking of something similar to https://friendos.com/
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.