The top stock in the australian stock exchange is constantly changing due to the flux of the stock market. While one stock may be the best today it can become the worst overnight.
There are a lot of stocks exchanged on the Australian Stock Exchange website. Some of them are AGL Energy,AMCOR,ANZ Bank,Alumina,Bluescope,BHP BLT, there are a lot more.
The difference between that Australian stock exchange and the American stock exchange is that they are based out of two different countries: Australia and America.