For the second month in a row we have reached/exceeded our data cap (100GB). This is unusual because we haven't changed our browsing/streaming habits in any noticeable way. What's more unusual is that after the first month I turned on Snap's AYCE Youtube addon, and despite using Youtube a lot we still reached our datacap, this time 3 days before the rollover.
If we have indeed used all this data then the solution is clear - move to an unlimited plan. However, before I do that I want to check whether there are any "data leaks" - an app that is running in the background constantly uploading or downloading or (god forbid) a problem with wifi security such that someone is piggybacking our connection. I seriously doubt the latter, but it is a (remote) possibility.
Can anyone suggest a good, free, data monitoring program for windows that will let me see what programs or websites are using the internet connection, and how much data they are using up (preferably up/downloaded)?