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Tech riderRev. 3 Oct 2026

CAD Assistant

Ch 047.5of 30 3D File Converter Software
  1. 1Runs onAndroid, iOS, Linux, Mac, Windows
  2. 2CostsFree plan
  3. 3Format scopemixed
  4. 4Supported platformsWindows, macOS, Linux, iOS, Android
4 lines stated Written from the maker's own pages: opencascade.com
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The CAD Assistant homepage

Overview

CAD Assistant is an offline 3D CAD viewer and converter for personal and commercial use, available on Windows, macOS, Linux, iOS, and Android. It opens CAD and mesh formats including STEP, IFC, IGES, BREP, glTF, JT, PLY, STL, OBJ, 3DM, DXF, SAT, and Parasolid XT. Users can browse assembly trees, show or hide components, and inspect properties such as area, volume, and centroid. PLY meshes can be viewed in wireframe, shaded, or shrink modes, with color or scalar quantities mapped to mesh elements or nodes. Desktop versions include a GPU-accelerated path-tracing renderer for screenshots. The maker says processing happens locally without a server connection. Imports provided by commercial Open Cascade components restrict model export or conversion. Large files may take time, low-range GPUs may be slow, and scenes with several million triangles may be terminated by the system; files under 50 MB are described as generally safe on most devices. The application is provided as is, without warranty. Its listed latest release is version 1.6.0, dated 2021-10-05.

Who it is for

CAD Assistant suits people who need to view or convert CAD and mesh files on desktop or mobile, including for commercial use. Users working with commercial Open Cascade imports or large models should note the export and performance limits.

What is good

  • Free for personal and commercial use
  • Processes files locally without a server connection
  • Opens a broad range of CAD and mesh formats
  • Assembly and geometric property inspection

What to know first

  • Commercial imports restrict model export or conversion
  • Large files may take time to process
  • Scenes with several million triangles may be terminated
  • Provided without warranty

Verdict

CAD Assistant provides offline viewing and conversion across desktop and mobile platforms, with detailed model inspection and mesh views. The commercial-import export restriction and stated device limits matter for larger or conversion-heavy workflows.

CAD Assistant plans and pricing

All plans
CAD Assistant Free Free for personal and commercial use · commercial import components restrict model export/conversion opencascade.com · 3 Oct 2026

Compared on 3D file converter software

Free plan
Yesopencascade.com
Format scope
mixedopencascade.com
Supported platforms
Windows, macOS, Linux, iOS, Androidopencascade.com

Facts

Purpose
CAD Assistant is an offline 3D CAD viewer and converter for personal and commercial use.opencascade.com · 3 Oct 2026
File formats
It supports CAD and mesh formats including STEP, IFC, IGES, BREP, glTF, JT, PLY, STL, OBJ and 3DM, plus DXF, SAT and Parasolid XT.opencascade.com · 3 Oct 2026
Model inspection
Users can browse assembly trees, show or hide components, and inspect product and geometric properties such as area, volume and centroid.opencascade.com · 3 Oct 2026
Mesh analysis
It can display PLY mesh data in wireframe, shaded and shrink modes, with color or scalar quantities mapped to mesh elements or nodes.opencascade.com · 3 Oct 2026
Rendering
Desktop versions include a GPU-accelerated path-tracing renderer for photo-realistic screenshots.opencascade.com · 3 Oct 2026
Integrations
The application integrates with operating-system file associations so compatible apps can open relevant files in CAD Assistant; saved model images can be attached through a mail client.opencascade.com · 3 Oct 2026
Offline and local use
The maker’s brochure says no server connection is needed and that processing is performed locally on the device.opencascade.com · 3 Oct 2026
Commercial import limit
Imports provided by commercial Open Cascade components disallow model export or conversion, while the maker says models retain complete structure without model-size limits.opencascade.com · 3 Oct 2026
Device limits
The maker warns that large files may take time, low-range GPUs may be slow, and scenes with several million triangles may be terminated by the system; it says files under 50 MB are generally safe on most devices.opencascade.com · 3 Oct 2026
Support
The product page directs users to forums for comments and invites bug reports, questions and suggestions through its contact options.opencascade.com · 3 Oct 2026
Warranty
The application is provided as is, without warranty of any kind.opencascade.com · 3 Oct 2026
Current listed release
The product page lists version 1.6.0 dated 2021-10-05 as the latest version.opencascade.com · 3 Oct 2026

Company

Headquarters
Issy-les-Moulineaux, Franceopencascade.com · 28 Sept 2026

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