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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.
Love bisqwit's videos.
For anyone curious how the mario animation is rendered in the editor: https://github.com/bisqwit/that_editor/blob/master/mario.cc
Less active the last several years, but it's still around:
http://www.povray.org/
https://github.com/POV-Ray/povray
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.