This is Chrome Extension to controll your tab easily.

1. Type tttr[0-9].
   Save your favoriate tab.
   You can see a [tttr] sign on the extension icon when you are on saving mode.

2. Type ttt[0-9].
   Restore your saved tab on a new tab.
   You can see a [ttt] sign on the extensions icon when you are on restoring mode.

3. Type ttte Expand all saved url on the new tabs.

4. Type tttt Open current url on a new tab for background.

5. Press Ctrl + Shift + T.
   You can see a list which has your tabs url.

   After you open the list.

   1. Type [0-9] (some number).
      (If saved list item.) Restore your saved tab on a new tab.
      (If not saved list item.) Save current url to the number.

• tttab might not work well if you use other extensions which has their own key mappings.
  Because other key mapping steal keydown event then the event may be suppressed.
  It depends on their implemetation. Vimium will cause this collision so you need to disable [0-9], [t] and [r] keys.