Monitor your Network upload and download data rate, with NetTraffic
NetTraffic is a free program able to monitor your network and let you see the amount of date you are sending or receiving.
The program reports also traffic details, even in charts and tables that present statistics about your connection hourly, daily, etc.
Of course besides usage history NetTraffic features real time charts. Multiple languages are supported and you are encouraged to ask for a translation in your own language if it is not already available.
If you are searching for a Network Monitor, you may like also to check this free Net Speed gadget, that monitors download and upload speeds.