QPerf is a Java application that actively measures network quality. Network quality is not just about download and upload speeds. It's about how well the network transports packets. If a large number of packets are dropped, or packets are delivered intermittently critical network applications such as SAP and real-time network applications such as voice and video can be a bad experience for end users in remote locations.

You shouldn't rely on your carriers or router vendor's report for network quality. They only see a part of your network. QPerf can measure quality from the end-user through the entire network to your data center. Because QPerf is an active measurement taking snapshots 24 hours a day, you don't have to wait until a user starts experiencing issues to be cognizant of network problems.