-
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.
YouTube-DL is hands down the best.
I use Extreme Download Mananger to download basically any video on the Internet, it's FOSS, it's being redesigned so you can grab the Beta version if you want - i still prefer the current one.
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.