iStat Menus 5.20 (688) (Mac OS X) | 28 MB iStat Menus lets you monitor...
Better per-app stats
iStat Menus 5 features read and write disk activity on a per-app basis. Upload and download activity is also shown per-app, making it far easier to track down the biggest bandwidth hogs.
More stats
Far more detailed network information, including router address, subnet mask, DNS and MAC address....