-
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 believe most of us sleep fewer than 3 times per day, so writing down times and doing a few subtractions and a little data entry once a week should be under 1 min/day to have everything digitised. (that said, https://xkcd.com/1205/ suggests it'd be worth spending up to 21 hours to fully automate)
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.