Just use Intent.ACTION_VIEW (i.e. android.intent.action.VIEW ), for example:
am start -a android.intent.action.VIEW -d http://www.xing.de
This launches the XING website. If you have more than one browser installed, you can, of course, add the name of the browser component that you want to run, for example:
am start -a android.intent.action.VIEW -n com.android.browser/.BrowserActivity -d http://www.xing.de
Hooray!
source share