2 Very Useful Screenlets: Folderview and SysMonitor PLUS

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1. If you use Gnome and want to have a folder view like KDE's built in similar feature or Windows 'Fences', then this screenlet is what you're looking for.

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2. Is a screenlet that looks a lot like Conky except it doesn't involve as much customization and also comes with a GUI, so it's easier to use for some people.