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MEGA launches new large file transfer service Transfer.it with no file size limit
(alternativeto.net)
This is a most excellent place for technology news and articles.
7-zip only has a gui for windows. That might be what you're thinking about. For MacOS and Linux it is console only
Adding many GUIs are available for 7zip format on Linux, most popular is probably Ark.
Keka is great for macos