Want to check which port is being used by which process in Windows?

Execute the following in cmd.exe:
netstat -aon
for the list of all open ports and corresponding process Ids (pid).


Name of the application for a particular pid can be retrieved by:
tasklist

Filters can be applied in the above commands in case the output is verbose using pipeline ( | ) :
Example:
netstat -aon | findstr 3306
It will show only those line which has 3306.