Loading is described as 'Your iPad and iPhone show you when apps are using your network. So why can't your Mac? Sure, there's always the Network section in Activity Monitor, but that's far from ideal. At best you can group by All Processes, Hierarchically, sort by Rcvd Bytes, and check the' and is a Network Monitor in the network & admin category. There are more than 10 alternatives to Loading for a variety of platforms, including Mac, Windows, Linux, iPhone and BSD apps. The best Loading alternative is Process Explorer, which is free. Other great apps like Loading are Stats, iStat Menus, BitBar and PowerTOP.