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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.
The other thing I really like is Kobopatch which lets you tinker with a number of appearance things, such as offering more, smaller, font sizes, reducing the space in the footer at the bottom of a page, and also does stuff like allowing you to block firmware updates. It's definitely a personal preference thing, but I found it pretty easy to get my head around and I like being able to mess about with that kind of thing.
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.