StorAmp

StorAMP is a free and open-source cloud storage explorer that supports variety of cloud providers:

Fast, native Windows application, downloadable from the Windows 10 Store:

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By installing from Windows 10 Store you get automatic updates, sandboxed application (it can’t damage your system or write where it’s not supposed to - it simply doesn’t have permissions to do so) and it just feels nice and safe.

Main features:

Screenshots

Main interface:

File preview:

Low RAM usage:

The code is archived on GitHub or downloadable from this page.