-
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 you want a web based dashboard then dash is the way to go
In my project, here are the files that QT Designer saves: https://github.com/djotaku/ELDonationTracker/tree/master/QTdesignerfiles
ttk themes
If your goal is is to make something cross-platform from a single code base; I recommend: Terminal.Gui. Every desktop has a terminal, and it has the added benefit of performing well over SSH and the like. The problem is people will think your app is old and busted because it's fast and looks like it's from the 80's.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.