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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.
There is this addon which lets you explore the scene tree which makes up the editor, so you at least would know which nodes are being used where. https://github.com/Zylann/godot_editor_debugger_plugin
NOTE:
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Hence, a higher number means a more popular project.