Proxyman supports multiple tabs to increase your productivity.
All keyboard shortcuts are same with Safari's shortcut.
⌘ + T
Open new tab
⌘ + 1, 2, 3
Quick navigate to the 1st, 2nd, 3rd tabs.
⌘ + ⇧ + [ or ]
Quick navigate the the left or right tab.
This feature only enabled in Premium version.