gnome-shell-extension-vertical-overview - 10-1 main

GNOME has had vertically stacked workspaces for a long time. The GNOME 40
update made the switch to a horizontal layout.
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This extension aims to replace the new GNOME overview with something that
resembles the old style.
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Please note that you have to manually enable the extension, for example using
gnome-extensions-app, which is part of the gnome-shell-extension-prefs
package.