I've read few quite a few other threads on SU, but they have been focused on instantaneous/average bandwidths (B/sec) rather than cumulative download/upload totals for a period. Either that or they don't drill down to application level.
Resource Monitor in Windows 7 only shows bandwidth.
I've just been trying NetLimiter and whereas it can show total uploaded/downloaded, it's a case of having one stats window open per application, as opposed to a table showing all applications at once.
Looking for applications for both Windows and Linux (Ubuntu), but they don't need to be the same.