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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.
Design seems to be on Flathub, but something about having to build it yourself via GNOME Builder via flatpak or something. But yeah, it's sad that GNOME doesn't have any more professional-grade applications.
If you are into typesetting I came across this really cool opensource typesetting project called "typst" which looked promising official website / github. It includes a scripting language inspired by fuctional languages (it is written in rust), and is aiming to provide a much lower entry barrier syntax wise. No ad, just something I thought was cool.