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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.
No idea what you mean by ecosystem here. Both Emacs with AucTeX and Vim support ConTeXt out-of-the-box. The ConTeXt standalone distribution also comes with plugins for other editors, e.g. VSCode for those who like editing text files in a web browser.
NOTE:
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Hence, a higher number means a more popular project.