Vizalyze opens TDMS, TDM, MDF4, CAN/LIN and 31+ formats directly - no NI hardware, no VBScript macros, no per-seat annual licensing. Windows, macOS and Linux.
Windows · macOS · Linux · No credit card · No time limit on free tier
NI DIAdem is a data analysis and report generation tool from National Instruments (part of Emerson), widely used across test and measurement labs to post-process TDMS/TDM files from LabVIEW, FlexLogger, CompactRIO, and PXI-based data acquisition systems.
It's a capable, established tool. But it runs on Windows only, is built around the wider NI hardware and software ecosystem, and automation beyond its built-in workflows means writing VBScript or Python macros. Licensing is per seat, per year - Base and Advanced editions are sold separately, with volume discounts starting at five or more seats.
Vizalyze reads the same TDMS/TDM files - along with MDF4, HDF5, CAN/LIN and 31+ formats in total - in a single desktop app that runs anywhere, with no macros required for everyday analysis.
Same TDMS files. Different price, platform, and workflow.
| Category | NI DIAdem | Vizalyze |
|---|---|---|
| Platform | Windows only | Windows, macOS, Linux |
| Licensing | $666–$1,407 per seat / year | Free tier, $49/mo Pro |
| Custom automation | VBScript or Python macro | Point-and-click - no code |
| AI-assisted analysis | Not built in | Built-in Axy AI |
| Batch report generation | Script-driven export | Pro: one-click PPTX/PDF |
| Ecosystem | Built around NI hardware/software | Standalone - any TDMS/MDF4 file |
| Share results | Manual export / email | Secure link, no raw-data upload |
| Setup | Install, NI account, license activation | Download and open |
DIAdem pricing reflects published Base/Advanced per-seat annual list prices at time of writing; check ni.com for current pricing.
Full TDMS/TDM coverage plus the tools you'd normally script yourself.
Open TDMS and TDM files from LabVIEW, FlexLogger, CompactRIO, PXI DAQ systems and other NI data loggers - plus MDF4, HDF5, CAN/LIN and 31+ other formats in the same app.
Windows, macOS or Linux. No NI account, no hardware dependency, no VBScript required for everyday analysis.
FFT, PSD, STFT/spectrogram, Butterworth/Chebyshev/Bessel IIR filters, smoothing, curve fitting - all with live chart preview. No macro scripting.
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 TDMS or MDF4 files with automatic time alignment and resampling. See per-channel statistics and deltas to spot regressions instantly.
Pro: auto-generate PPTX or PDF reports across dozens of files in one click - no report-generation macro to write or maintain.
Your TDMS/TDM 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.
NI DIAdem is a data analysis and report generation application from National Instruments (part of Emerson), widely used to post-process TDMS/TDM measurement files from LabVIEW, FlexLogger, CompactRIO, and PXI-based data acquisition systems.
Yes. Vizalyze reads TDMS and TDM files directly - including files logged by LabVIEW, FlexLogger, CompactRIO, and other NI data acquisition hardware - with no NI software or account required.
No. Vizalyze is a standalone desktop application. It reads the TDMS/TDM file format directly, so you can open files produced by NI hardware without installing any NI software.
Yes - Vizalyze has a free tier with no time limit. Core TDMS/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. Unlike DIAdem, which is Windows-only, Vizalyze runs natively on Windows, macOS, and Linux.
No. Vizalyze is local-first: your raw TDMS/TDM 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 TDMS/MDF4 analysis. No time limit. No credit card. Upgrade for signal processing, live monitoring, and batch reporting.
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