Install.
Chrome: https://chrome.google.com/webstore/detail/tochunka-smart-tab...
Firefox: https://addons.mozilla.org/uk/firefox/addon/tochunka-smart-t...
Safari: does not support tab(https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/Web...) nor bookmark move(https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/Web...). So, no extension for it. :(