Free USB Analyzer

Monitor and Analyze USB Data Flows
Zero price software
by HHD Software

Free USB Analyzer Overview

Free USB Analyzer is a non-intrusive software USB sniffer and protocol analyzer for Windows.

This software-based USB protocol analyzer allows you to monitor the data transferred between USB applications and devices connected to your computer via USB interfaces. All Windows desktop/server 32-bit and 64-bit platforms starting from Windows Vista are supported. Windows 11 ARM64 is also supported.

Our USB monitoring program may be an excellent alternative to hardware analyzers because it intercepts all Windows API function calls which are transferred between USB applications and device drivers, parses transmitted packets and shows all captured data in a several convenient forms, which is virtually impossible for hardware solutions due to their low level view.

This Freeware USB data snooping utility requires no additional hardware or cables to operate. It runs smoothly, processes monitored packets in real-time even on high data rates (up to 20 Gbit/s). It allows efficient USB protocol analysis for High Speed USB 2.0, SuperSpeed USB 3.0 and SuperSpeed+ USB 3.x communications.

For the best user experience, our product supports data filtering. Free version supports filtering by USB endpoints and requests. Paid version also supports filtering by parsed protocol fields and provides you with a lot of custom filtering options.

The free version provides all the basic tools for convenient tracing and exploring captured USB data. It includes browsing, searching for specific data patterns and exporting features. Paid version also supports USB data recording (USB data logger function), sending packets to USB HID devices in response to triggered events and allows you to automate workflow with scripts (written in JavaScript or TypeScript).

This USB sniffer helps in developing, debugging, testing and analyzing devices, their drivers, and other software/hardware solutions that exchange data using USB communication protocols.

Download this Free USB Sniffer and trace USB communications in seconds.

How Free USB Analyzer Works

The program installs a filter driver between the USB host controller driver and the device driver and then intercepts all USB Request Blocks (URBs), displaying them to the user in an easily readable format.

This free USB monitoring and analysis utility is designed for efficient interception, capturing and decoding of communication data generated by any USB application and device connected to a local or remote PC via the USB interfaces.

Free USB Analyzer supports advanced data filtering by URB type and USB endpoints.

Capturing and interactively displaying data transferred over a USB connection is now made easy!

Free USB Sniffer Features

With our free USB port monitor you can:

  • View USB device stack layout: device objects for each device driver
  • View USB device descriptor, configuration descriptor, interface descriptor, endpoint descriptor, HID descriptor
  • View USB device properties and Plug & Play (PnP) related information
  • Analyze USB Host Controllers, USB Hubs and USB Devices activity
  • Monitor the bus traffic, decode and display the USB data, filter bus traffic
  • Intercept and view USB control transfers, interrupt transfers, bulk transfers and isochronous transfers
  • Parse and reverse engineer USB protocols, reverse engineer USB devices, drivers and USB applications
  • Capture data streamed via Hi-Speed USB and SuperSpeed Plus USB host controllers
  • Capture data sent to the target Full-Speed USB 2.0 devices
  • Monitor data that flows between device interface and USB interface port
  • Analyze data transfer protocols for local or even remote USB devices

If you are looking for an entirely software-based monitoring solution that facilitates development and debugging of USB devices, drivers and applications, then our Free USB Snooper is exactly what you need. It requires no additional hardware and allows you to debug communication protocol errors, view and test device failures.

Free USB Port Monitor OS support:

Our software Universal Serial Bus Analyzer supports all modern Windows server and desktop platforms starting from Windows Vista x86 and x64 operating systems. Monitoring of USB devices on Windows 10, Windows 11 and Windows Server 2022 are also supported.

Free USB Protocol Analyzer Usage

You can use this USB communications viewer and debugger for:

  • Debugging USB-related software applications and hardware devices
  • USB hardware and device driver development
  • Testing and troubleshooting USB software and hardware
  • Reverse engineering of USB devices, drivers, applications and protocols
  • Capturing and parsing USB descriptors, exploring USB device properties
  • Snooping USB communications data, I/O requests and control requests
  • Exporting device communication data to your hard disk drive or removable media
  • Spying and analyzing remote USB communications, remote data snooping
  • Understanding proprietary databus protocols
  • Researching functionality of any third-party software applications and hardware devices
  • Detecting errors in USB data transmission
  • Testing and troubleshooting USB protocols

Free USB Protocol Analyzer Target Groups

Free USB protocol analyzer and decoder is an extremely useful tool for the following target groups:

  • USB hardware and software developers
  • IT system integrators and consultants, lab experts
  • Engineers working in the field or in the lab
  • SCADA software system engineers and embedded engineers
  • USB Programmers, testers and IT support specialists
  • Industrial control equipment support personnel
  • USB device developers, manufacturers and vendors
  • Science technicians and university students
View detailed information for our USB sniffer usage scenarios
Free Software USB Analyzer Additional Usage Scenarios

Using this freeware USB explorer you also can:

  • View the properties and nested devices of local and remote USB devices:
    • USB driver stack: Device objects associated with each USB device driver used for I/O operations.
    • USB descriptors: USB device descriptor, USB configuration descriptor, USB interface descriptor, USB endpoint descriptor.
    • USB Plug and Play related information: Instance ID, Hardware ID, Software Key and more.
  • Capture and decode the following kind of data passed over USB device stack:
    • USB Request Blocks (URBs) and structures used by device drivers.
    • I/O Request Packets (IRPs) used by PnP.
    • I/O Control Requests (IOCTLs) used by kernel-mode drivers and user-mode applications.
    • Incoming and outgoing data packets flowing through USB interface.

You'll find our Free USB sniffer and protocol analyzer useful while working with the following USB device classes:

  • Audio (Sound card, speaker, microphone, MIDI)
  • Communications and CDC Control (Ethernet adapter, Wi-Fi adapter, modem)
  • Human interface device (HID) (Keyboard, joystick, mouse)
  • Physical Interface Device (PID) (Force feedback joystick)
  • Image (Webcam, scanner)
  • Printer (Inkjet printer, laser printer, CNC machine)
  • Mass storage (MSC or UMS) (Memory card reader, USB flash drive, digital camera, digital audio player, external drive)
  • USB hub (Full bandwidth hub)
  • Smart Card (USB smart card reader)
  • Content security (Fingerprint reader)
  • Video (Webcams)
  • Personal Healthcare (Pulse monitor)
  • Audio/Video (AV) (Webcam, TV)
  • Diagnostic Device (USB compliance testing device)
  • Wireless Controller (Bluetooth adapter)
  • Miscellaneous (ActiveSync devices)
  • Application-specific (IrDA Bridge, Test and Measurement Class (USBTMC) for test and measurement equipment, USB DFU (Direct Firmware update))
  • Vendor-specific device class

Our Freeware USB Explorer is the most effective tool for developers, dealing with the following device classes:

  • USB composite devices
  • USB mass storage / USB drive devices
  • USB Media Transfer Protocol (MTP) devices
  • USB Human interface (HID) devices
  • USB Video / Audio MIDI devices

Our Free Software USB Logic Analyzer will help you to capture USB Request Blocks and decode data received from the following USB Devices:

  • USB to Serial adapter, USB Ethernet adapter, USB Modem, USB Serial (COM) Port, USB KVM switch, USB TV Tuner, USB Serial converter, USB Bluetooth adapter, USB Bar-code reader.
  • USB Webcam, Video device, USB Microphone, Audio device.
  • USB CD, DVD, Blu-ray Disc, BD players/recorders, Sound Bars and Home Theater Systems, USB Hard Disk Drives, HDD, USB pen drive (pendrive), USB Memory Cards.
  • USB Joysticks, Keypads, Mice.
  • USB Cameras, Receivers, Digital Camcorders, TV, Projectors and Screens, USB Printers, MP3 Players, Radios, Amps and Tuners.
  • USB Gadgets, iPod, iPad, USB Tablets, E-Readers, Mobile Phones, Smartphone, Cell Phones, GPS Navigators.
  • USB Networking and Wireless adapters, Computer Peripherals, USB Host Controllers and much more.

Download this Free USB tracer and analyze USB communication bits and bytes in seconds!

Free USB Analyzer Advantages

  1. Fast. It runs smoothly at high data rates without compromising PC performance.
  2. Flexible. It supports advanced data filtering and layout customization.
  3. Remote. It monitors devices connected to the remote computer.
  4. Social. It allows you to ask questions and get answers from experts.
  5. FREE. It costs nothing!
Juyeon Jo
I downloaded and used the USB product at the request of the customer. Useful product.
Juyeon Jo Inchal
Rating: 5.0
Based on:4 reviews
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Monitor and Analyze Your USB Connections
Free USB Analyzer Advantages
Monitor and Analyze Your USB Connections