-- Internet Explorer 6-8
    -- Internet Explorer 9-10
    -- Internet Explorer 11
    -- Internet Explorer new?

    -- Firefox
    
    -- Konqueror (abandoned?)
      \
       -- Safari
         \
          --Chromium, Opera 15+
             \
               -- Chrome
         \ 
           --IOS safari

    -- Opera 12 (abandoned)

and that's why i use and only advertise firefox. It is the only browser that respect webdevelopers.