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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.
When I was in school, a lot of the teachers will create Facebook Groups per class to share documents, prep-work, assignments etc..
I think the school moved to a self hosted Moodle[0] by now, but when I was there having a Facebook account was definitely required.
A friend of mine is also struggling with his kids' soccer practice as they only organize and do announcements over Facebook.
[0] https://moodle.org
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