Does someone have an idea how one could create such an effect?

This page summarizes the projects mentioned and recommended in the original post on /r/GIMP
ANSI terminal-graphics terminal-based unicode-characters Image processing

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.
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  • libcaca

    💩 Colour ASCII Art Library

  • chafa

    📺🗿 Terminal graphics for the 21st century.

  • 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.

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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.

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