How do I find a list of open applications / switch to open applications Where can I find a list of open applications ? Is it possible to switch to them using that ?
Long pressing on the home button will bring up the six most recently accessed apps and you can switch them. How many stay in the memory depends on your phone and the size off the app. Android keeps all opened apps in the memory until it needs space.  There are countless apps that show what apps are running in your memory. Search the market for "app manager" or "task manager".  One I particularly like is Smart Bar.