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cyberduck
Cyberduck is a libre FTP, SFTP, WebDAV, Amazon S3, Backblaze B2, Microsoft Azure & OneDrive and OpenStack Swift file transfer client for Mac and Windows.
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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.
(S)FTP was also a surprise for me. It used to be way more common a few years ago but I see it less these days in data workflows but still wouldn't surprise me if I learned a (large) company still had a server running somewhere. I think it had longevity because FTP clients such as Cyberduck expanded their features to enable browsing of cloud storage (AWS S3, Google Drive, etc) whilst retaining simplicity.