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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.
Since nobody else has mentioned it, you might want to try VCV Rack. It's a pretty good modular synth in software (bonus, it's free!). You can save and load complete patches, so it scratches that itch to recapture a complex configuration. Lots of good information in its dedicated subreddit.
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.