Cloud Storage & File Management
Cloud storage tools spend most of their interaction budget on browsing, searching, and sharing files rather than the deep editing shortcuts covered elsewhere on this site, so this category's shortcut sets tend to be comparatively compact — but the ones that exist, particularly search and quick-share, get used constantly enough in a typical workday to be well worth learning deliberately rather than defaulting to mouse-driven right-click menus every time.
Google Drive
Browser-based file storage and sharing with quick-access shortcuts for search, renaming, and moving files between folders.
Dropbox
Cross-platform file sync with both a desktop app and browser interface, each carrying its own overlapping but distinct shortcut set.
OneDrive
Microsoft's cloud storage, deeply integrated with Windows File Explorer and Office apps, inheriting several Windows-native conventions.
A detail worth understanding across this whole category: most of these tools maintain both a browser-based interface and a native desktop sync client, and the two often have meaningfully different available shortcuts, since the desktop client behaves more like a regular file manager (subject to OS-level file shortcuts) while the browser interface is constrained to whatever the web app itself has chosen to implement — worth checking which context you're actually in if an expected shortcut doesn't seem to work.