Vizalyze is a desktop GUI built on asammdf. Everything you do with the asammdf library - read MDF/MF4 files, plot signals, decode CAN/LIN, run FFT - done in seconds, with no scripts, no environment setup, no boilerplate.
Windows · macOS · Linux · No credit card · No time limit on free tier
asammdf is an open-source Python library for reading, writing, and processing ASAM MDF (Measurement Data Format) files - the standard format used by automotive ECUs, vehicle data loggers, and test benches from vendors like Vector, ETAS, Kvaser, and Dewesoft.
It's excellent and widely used. But it requires Python knowledge, environment setup, and writing code every time you want to load a file, plot a signal, or extract data. For engineers who work with MDF4 files daily, that overhead adds up.
Vizalyze runs on asammdf internally - giving you the same robust MDF4 support, but wrapped in a full desktop application you can open and use immediately.
Same engine. Very different experience.
| Task | asammdf + Python | Vizalyze |
|---|---|---|
| Open an MDF4 file | 3+ lines of Python | Double-click |
| Plot multiple signals | matplotlib boilerplate | Drag signals to canvas |
| Decode CAN/LIN (DBC) | cantools + manual setup | Load DBC in one step |
| FFT / IIR filter | scipy + custom code | Click - live preview |
| Compare two test runs | Write diff script | Overlay in 2 clicks |
| AI signal analysis | LangChain setup required | Built-in Axy AI |
| Batch PDF/PPTX reports | Custom Jinja2 template | Pro: one-click |
| Standards-aligned workflows check | Manual coding | Team: 18 standards built-in |
| Share results | Email attachment | Secure link, no upload of raw data |
| Setup time | Hours | Minutes |
Full asammdf coverage plus the tools you'd normally script yourself.
Read all MDF3 and MDF4 variants including sorted and unsorted files, compressed blocks, and bus logging files from Vector CANalyzer, ETAS INCA, Kvaser, Dewesoft and more.
Load your DBC, ARXML, KCD or SYM database and Vizalyze decodes CAN/LIN messages from embedded bus logging directly in the MDF4 file. Built-in EV signal presets.
FFT, PSD, STFT/spectrogram, Butterworth/Chebyshev/Bessel IIR filters, smoothing, curve fitting - all with live chart preview. No scipy required.
Describe what you want to know in plain English. Axy identifies anomalies, finds correlations, and summarises test results. Use built-in AI or your own API key.
Overlay multiple MDF4 files with automatic time alignment and resampling. See per-channel statistics and deltas to spot regressions between runs instantly.
Pro: auto-generate PPTX or PDF reports across dozens of MDF4 files in one click. Share as a secure link - no emailing raw data.
Your MDF4 files are never uploaded. Everything runs on your machine. Cloud sync (Pro) only syncs your workflows and templates - never raw signal files.
Team: WLTP, Euro 6/7, EPA FTP-75, SAE J1634 and 14 more - with ISO 17025-style lab metadata and Pass/Warn/Fail KPI assessment built in.
asammdf is an open-source Python library for reading, writing, and processing ASAM MDF (Measurement Data Format) files - the standard format used by automotive ECUs, vehicle data loggers, and test benches from vendors like Vector, ETAS, Kvaser, and Dewesoft.
Yes. Vizalyze is a desktop application built on asammdf that runs on Windows, macOS, and Linux without requiring Python or any package installation. Download and double-click to open any MDF4 or MF4 file immediately.
Yes - Vizalyze has a free tier with no time limit. Core MDF4 viewing, signal plotting, and CAN/LIN decoding are free. Signal processing (FFT, IIR filters), batch reporting, and cloud sync require a Pro plan. No credit card required to start.
Yes. Vizalyze uses asammdf internally and supports all MDF3 and MDF4 variants, including files from Vector CANalyzer, ETAS INCA, Kvaser, Dewesoft, and other common data loggers - including compressed blocks, unsorted files, and embedded bus logging.
Vizalyze wraps the same asammdf library in a desktop GUI. Tasks that require 3+ lines of Python - opening a file, plotting signals, decoding CAN/LIN with a DBC, running an FFT - become single clicks. There is no environment setup, no pip install, and no scripting required.
No. Vizalyze is local-first: your raw MDF4 files are never uploaded. All processing runs on your machine. Cloud sync (Pro) only syncs your workflows and templates, never raw signal files.
Free desktop app for core MDF4 analysis. No time limit. No credit card. Upgrade for signal processing, live monitoring, and batch reporting.
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