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SheetsIO
Small configurable Java app that pulls data from a Google Spreadsheet (using v4 api) and writes to files and a local webserver.
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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.
SheetsIO, https://github.com/GrandyB/SheetsIO, uses a Google Sheet to write files on your computer which you can then read using OBS text or image sources. This does not require any programming knowledge outside of writing a JSON config file (to tell it what cell data to write to what file) which isn't that hard. There's an introduction video on the page that shows how to get started.
NOTE:
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Hence, a higher number means a more popular project.