ARIA Tabs with Right Click Popup Menu

The context menu is keyboard accessible.

Press Shift+F10 or the Applications key to open the context menu on a tab.
Press the Up and Down Arrow keys to move focus between the menu options.
Press the Left and Right Arrow keys to open or close submenus if applicable.
Press any letter or number to jump to a menu item starting with that character or digit.
Press Enter to activate a menu option.
Press Escape to close the currently open menu.
Press Tab to close the menu and all submenus.
Mouse users can right click on a tab to open the menu as usual.
Mouse users can cancel and close the menu by clicking anywhere else on the page.
On a touch screen, touch a tab and hold for about 2.5 seconds then release to open the menu,
tap a menu item to activate it, or tap anywhere else on the page to cancel and close the menu.

The tab controls are keyboard accessible.

Set focus on the tab control.
Press the Arrow keys to move focus between tabs.
Press Home or End to move to the first or last tab.
Press any letter or number to jump to a tab starting with that character or digit.
Press the Spacebar to open (or optionally toggle if configured) the selected tab.
Mouse users can click the desired tab as usual.