NetLimiter is an ultimate internet traffic control and monitoring tool designed for Windows. You can use NetLimiter to set download/upload transfer rate limits for applications or even single connection and monitor their internet traffic. Along with this unique feature, Netlimiter offers comprehensive set of internet statistical tools. It includes real-time traffic measurement and long-term per-application internet traffic statistics More info »
A very good and functional program, but $30 (USD) seems a little pricey for something that's update about once or twice a year.
good program but not free; netBalancer http://depositfiles.com/files/6dv1jfch4 netBalancer not bad too and free if limit up to 5 process.
