BitMeter is a freeware application for Windows Vista and XP that allows you to check your upload/download speed and the total amount of bandwidth used in real time in the form of graphs. The software maintains historical data for the last few days, weeks or months and allows you to export it to an Excel spreadsheet file for further analysis.

Main features include:

1) Uploads/downloads speed and bandwidth used
2) Historical data for statistics
3) Monitor your speed and bandwidth remotely over the internet through a web browser
4) Notifications
5) Stopwatch- Display the average, minimum and maximum upload and download speed
6) Calculator for time estimation
7) Animted system tray icon

And more….

Download here