-
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.
Most languages have some sort of graphics library, so that can be used. When I did my project that lead to my single post on r/dataisbeautiful, I used the Clojure library Incater to do the heatmap. The matplotlib library for Python allows stuff like that as well.
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.