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PixiJS
The HTML5 Creation Engine: Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.
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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If your issue with Curses is its ancient and outdated API then you could look at NotCurses.
Something like PixiJS can also work for both without having to touch either, and I find it a lot easier to use than the little bit of webgl and canvas that I've had to work with directly.
Casey Muratori made a renderer/terminal a short while back. Might be a good reference of you intend to go that route. https://github.com/cmuratori/refterm
I'm participating in the "roguelikedev does the roguelike tutorial" this year, take a look at the project repo on github. Mi goal is to have something simple, very very simple, that anyone can follow along. It's written in c without any external library!