USBlyzer Alternative — What to Use Now That USBlyzer Is Gone
USBlyzer was a popular software USB analyzer for Windows. Its domain is now a gambling site. Compare USBlyzer vs BusScope for USB traffic capture, descriptor inspection, and endpoint debugging.
If you googled "USBlyzer" recently, you already know. The domain that hosted one of the most popular software USB analyzers for years now redirects to an online gambling site. The tool is gone. No downloads, no licenses, no support.
For the thousands of USB developers who relied on USBlyzer for URB-level capture, descriptor inspection, and transfer debugging, this leaves a hole in the toolchain. Here's what to use instead, and how the alternatives compare.
What USBlyzer Did
USBlyzer was a Windows-only software USB protocol analyzer. It captured USB Request Blocks (URBs) at the driver level, decoded standard descriptors and class-specific requests, and displayed transfers in a timeline with packet detail. It cost around $99 — reasonable for a professional tool — and had a clean, Windows-native UI.
What Happened
The domain registration lapsed or was hijacked. The same thing happened to USBTrace, another similar tool. Two of the three affordable software USB analyzers for Windows disappeared almost simultaneously.
This leaves:
- Wireshark + USBPcap — Free, powerful, but steep to set up and not USB-specialized
- HHD Software USB Monitor — $65-130, Windows-only, 18 years of feature accumulation, complex UI
- Hardware analyzers (Beagle, Ellisys) — $495-$25,000, overkill for most firmware debugging
BusScope as a USBlyzer Replacement
BusScope was designed for exactly the workflow USBlyzer users know: plug in a device, start capture, see what's happening on the bus.
Same Capture Model
Like USBlyzer, BusScope uses USBPcap on Windows and usbmon on Linux — no hardware analyzer required. Capture at the driver level, see raw URBs with microsecond timestamps.
Better Descriptor Inspection
BusScope parses and displays device, configuration, interface, endpoint, HID, and CDC descriptors in a tree view. Every field is labeled with its specification name and value. Click any field to see the raw bytes and the specification reference.
Transfer Timeline
Filter by endpoint, direction, transfer type (control, bulk, interrupt, isochronous). See stall conditions, timeouts, and NAK rates at a glance. The timeline view shows you where transfers slow down or fail — exactly what you need for firmware debugging.
Session Storage
Save captures as .bscope sessions. Reopen them later, share with colleagues, or attach to bug reports. Each session preserves the full capture, filters, and annotations.
Cross-Platform
Work on Linux during development and switch to Windows for testing. Same UI, same file format, same workflow.
Comparison Table
| Feature | USBlyzer (dead) | BusScope |
|---|---|---|
| URB capture | Yes (USBPcap) | Yes (USBPcap + usbmon) |
| Descriptor decoding | Yes | Yes (device/config/interface/endpoint/HID/CDC/BOS) |
| Transfer filtering | Yes | Yes (endpoint, direction, type) |
| Timeline view | Yes | Yes |
| Session save/load | No | Yes (.bscope format) |
| Cross-platform | Windows only | Linux + Windows |
| Large capture handling | Limited | Windowed for any size |
| Price | ~$99 (was) | $19 lifetime |
| Maintained | No (domain hijacked) | Yes (active) |
| Support | Gone | Email within 24h |
Also Consider
HHD USB Monitor
HHD USB Monitor is a broader Windows monitoring suite with Pro-tier automation surface, higher pricing, and more UI complexity. BusScope keeps the buying decision simpler: focused local capture, descriptor and transfer evidence, session export, and a $19 lifetime license.
Wireshark + USBPcap
Wireshark with USBPcap is broad and free, but the friction is real: install capture plumbing, configure filters, learn USB display filters, and build the story manually. BusScope is the Hannes Software path for daily USB development: focused, local, and ready to export a case.
Switch in Under 5 Minutes
- Download BusScope from the BusScope product page
- Install USBPcap (Windows) or verify usbmon permissions (Linux)
- Plug in your device, start capture
- See your USB traffic — descriptors, transfers, errors — immediately
USBlyzer users: this is the workflow you know, on the platforms you need, at a fraction of what USBlyzer cost.