USBTrace

If you're looking for a comprehensive USB protocol analyzer for Windows, USBTrace is a top choice. This software-only solution provides 100% software-based monitoring of USB transactions occurring across USB host controllers, hubs, and devices, making it an excellent option for developers and IT professionals who need to inspect the host side USB protocol.

One of the standout features of USBTrace is its expansive compatibility. It supports Windows 2000, Windows XP, Windows Server 2003, Windows Vista, Windows 7, and Windows 8 operating systems, both in 32-bit and 64-bit versions. It also works with USB 1.x, 2.0, and 3.0 host controllers, hubs, and devices.

In terms of functionality, USBTrace offers a ton of options for capturing and analyzing USB transactions. You can capture transactions at USB host controllers, hubs, and devices, as well as transactions handled by any device object in the USB device stack. The software is nonintrusive, and it doesn't use any filter drivers to capture USB transactions.

Other impressive features include the ability to capture all USB transactions during device enumeration, automatic capturing for hot-plugged devices, and search and filtering options for captured information. You can export monitored USB requests to HTML, XML, CSV, or text files, and the software supports continuous capture for nonstop analysis.

USBTrace can even decode class-specific USB requests and descriptors, including those related to HID, hub, mass storage, Bluetooth, still image capture, video, audio, printer, smart card, vendor-specific, and WUSB devices.

To make analysis and report generation easier, USBTrace also supports background capturing for high-performance sessions and allows you to add comments and bookmarks to captured data. You can even view performance statistics for each capture session and export performance reports as HTML or text files.

Overall, USBTrace is a powerful and versatile USB protocol analyzer that has a lot to offer for Windows users.