USBlyzer is an easy to use software USB protocol analyzer which provides a complete yet simple to understand view for analyzing USB Host Controllers, USB Hubs and USB Devices activity. You can view detailed information about all USB devices and their related childs. USBlyzer allows you to capture, decode and display important information such as URB requests and related structures used by USB drivers, IRP used by PnP subsystem, Kernel-Mode and User-Mode I/O Requests used by USB client drivers and user-mode applications. The program can be successfully used for application, device driver and hardware development and can help you test and troubleshoot software and hardware.