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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.
If you don't want to write a voxel engine from scratch then you might be able to use an existing one such as this. You could also try modding an existing voxel game such as Teardown or Voxatron. Lastly, there are voxel extensions available for all of the big engines including Unreal, Unity and Godot.
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.