Netlimiter 2 This software is not only data transmission counter but more complex application.
Netlimiter is able to monitor a “consumption” of transmitted data for all processes that are in touch with network connection. Furthermore it is possible to define the maximum transfer rate (both upload and download) for each single process. Program offers detailed statistics (plots) and a scheduler. Netlimiter can be used as a firewall as a bonus. If you are interested only in monitor function then look for the “Monitor” version which is free.