Toolbar button that will open the 'Extensions' page
This is just a shortcut to the browser's Extensions page.
When installed, it will add "Extensions" button to the toolbar.
Click the icon and you'll open the "Extensions" page. It's simply a shortcut, but still -- there are two options available: you can set the button to open the extensions list in new tab or in the current tab and, if you want, you can add/remove the shortcut from the context menu.