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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.
OneDrive has an unofficial Linux client that I used myself for a while. It works fine. You need to run it on startup by either using the systemd daemon or running the command on startup/using a cron job.
Otherwise, consider Nextcloud. Nextcloud is free software, but you'll need to host it on your own server.
NOTE:
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Hence, a higher number means a more popular project.