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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.
And, albert https://albertlauncher.github.io/ would be the default spotlight alternative, but in my experience it's not that snappy and doesn't behave exactly as you'd expect. imo the default gnome search function is fine
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.