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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.
PCB Tools provides a set of utilities for visualizing and working with PCB design files in a variety of formats(RS-274X,odD++, excellon files). pcb-tools this the github repo and it basically creates image by combining different layers in fabrication(top copper,internal,mask layer and all) Yeah you can use KICAD as well but pcb-tools seems to support a large set of files from KICAD and others as well.
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.