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termux-app
Termux - a terminal emulator application for Android OS extendible by variety of packages.
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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.
You could try changing the theme, there's a few different options out there to handle that, this is a pretty good one on GitHub, some prepackaged scripts in a repository that will change the colors so don't have to do the "dirty work", and you have some choices. Even if you want to just check it out and build/reverse engine it yourself. Check it out.
I downloaded the newest version without fdroid https://github.com/termux/termux-app/releases
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Hence, a higher number means a more popular project.