any STEP free

  • View
  • Inspect
  • Validate

Why Open STEP Viewer

  • Stay secure

    Keep sensitive CAD data local – no uploads to external servers.

  • Save time

    Load and review even large STEP files in seconds.

  • Validate

    Ensure geometry accuracy before production.

  • Work anywhere

    Cross-platform compatibility

    • professional-grade viewer
    • lightweight
    • free
    • heavy CAD software
    • costs

Supported formats versions

  • STEP

    • AP 214
    • AP 242 ed.3
    • AP 203
    • Domain Model (StepX)

  • IGES 5.3

  • QIF3

Features

  • Full 3D visualization

    Full 3D visualization

    • zoom
    • pan
    • 3D rotate and visual styles
  • Clash Detection

    Clash Detection

    Detect clashes in a model

  • Measurement

    Measurement

    Measure distances
    between points
    with snapping

  • Selection & Property Inspection

    Selection & Property Inspection

    Isolate/hide selected
    objects

  • Expandable model hierarchy tree

    Expandable model hierarchy tree

  • Publish

    Publish

    any STEP model to 3D PDF

  • Validation

    Validation

    SDAI (ISO-10303) and Step
    Physical File syntax validation

  • Section Planes

    Section Planes

    For detailed model
    inspection

  • TreeView plugin

    TreeView plugin

    For SDAI model exploration and debugging

STEP Forward Partnership

For manufacturers and supply chain leaders: Solve your STEP challenges with confidence.

Learn More

Roadmap

  • 2024

      • Workplanes for Measurements — Support measurement tools with defined workplanes.

      • Fly Camera Mode — Enable free-fly camera navigation.

      • Query Plugin for Tree View — Search for objects by attribute values.

      • Layers Manager — Manage STEP layers if available
        in the file.

      • Extended UIDs Support — Support unique identifiers
        for StepX files.

      • Holes Visualization —
        Visualize hole details
        in models.

      • User-Defined Properties — Display custom properties
        in the Properties Tab.

      • Custom AP242 Schemas — Support user-defined AP242 schemas.

      • Shell Viewer and Curve Dump Plugins — Tools for shell
        and curve analysis.

      • BRep Analyzer Plugin — Compare body topology using UUID data, integrated with Tree View.

  • 2025

      • Angle Measurement — Add tools for measuring angles.

      • Japanese and German viewer versions release.

Download

  • Windows x64
  • macOS 64
  • macOS arm64
  • Linux

by Open Design Alliance

ODA creates SDKs for building complex CAD & BIM applications quickly and easily.
Since 1998.

Learn more