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Harddisk LED
Show harddisk activity (IO speed read/write and LED). Click to change led size
Simple net speed
Simply showing network speed. Left click to change modes:
TopIcons Plus Git
This extension moves legacy tray icons (bottom left of Gnome Shell) to the top panel. It is a fork from the original extension from ag with settings for icon opacity, saturation, padding, size and tray position, along with a few minor fixes and integration with the Skype integration extension.