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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.
one of the POP OS developers also worked on a wm before Cosmic https://github.com/Drakulix/fireplace
Maybe take a look at cosmic-comp it is currently in development by System76 for their own Cosmic DE. Smithay also has Anvil and Smallvil contained in it's repository, both are example implementations of a compositor using Smithay.
also found https://github.com/mahkoh/jay
Yeah, I already started developing it. I started with Smallvil and then I also found mwm
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