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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.
there's a background extension called Vallpaper (not a typo) that can do that also.
Have you tried Cario-Dock? Its not a native KDE app, but it does support KDE integration. I installed it on KDE Neon after the Latte Dock announcement. No crashes, and it has a lot of features.
You might be interested in Fancy Tasks.
NOTE:
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Hence, a higher number means a more popular project.