3D InterOp

Free trial APILinuxMacSelf-hostedWindows

What 3D InterOp is

3D InterOp is a software development toolkit for exchanging visualization, exact B-rep geometry, and metadata among CAD formats. It reads and writes more than 30 CAD, BIM, mesh, and visualization formats, and its API lets developers import product structure, tessellated or exact geometry, and manufacturing information selectively. Automated healing, stitching, and resurfacing can produce topologically valid solid models for downstream workflows. The toolkit supports stable CAD topological identifiers and graphical and semantic PMI with geometrical associativity. With the CGM kernel and native APIs, it reads and writes CATPart and CATProduct, and reads CATIA and SolidWorks metadata without a CAD license. Spatial names 3D ACIS Modeler, CGM Modeler, and Parasolid as modelers supported for CAD/CAM data exchange. Concurrent import uses multiple threads and processes. Spatial describes support for major AEC, BIM, and plant design formats across construction workflows. The toolkit supports Windows, Linux, and macOS and provides API access. Spatial says it publishes two major releases each year and minor updates weekly, with format-version support updated with each release. A free trial is available through an evaluation process involving a discovery call, an evaluation SDK, and weekly advice; the page gives no trial duration. Pricing is available on request.

Who it suits

3D InterOp suits software teams building CAD translation or data exchange into applications, especially where they need selective geometry import, repair, or PMI associativity. It also fits AEC, BIM, and plant design workflows that exchange data across supported formats.

What it does well

Reads and writes over 30 CAD, BIM, mesh, and visualization formats.
Selective import covers geometry, product structure, and manufacturing information.
Repair tools can create topologically valid solid models.
Reads CATIA and SolidWorks metadata without a CAD license.
Supports Windows, Linux, and macOS.

What to know first

Pricing is available on request.
There is no free plan.
The trial requires an evaluation process; its duration is unstated.
Downloads require login credentials.

Limits

There is no free plan. The free trial is conducted through an evaluation process, and the facts do not give its duration; pricing is on request.

Getting started

Visit https://www.spatial.com/solutions/cad-translation/3d-interop.
Request pricing and arrange the evaluation discovery call.
Use the evaluation SDK and weekly advice during the evaluation.
Access downloads and documentation through the Spatial site with login credentials.
Use the C++ or C# documentation and sample implementations to begin development.

Verdict

Choose 3D InterOp if your team needs a cross-platform SDK for CAD exchange, selective imports, geometry repair, or associated PMI. Spatial offers an evaluation SDK and developer guidance. Look elsewhere if you need a self-serve free plan or immediate access to downloads without login credentials.

Questions

How much does 3D InterOp cost?

Pricing is available on request.

Is there a free plan or trial?

There is no free plan. A free trial is available through an evaluation process with a discovery call, evaluation SDK, and weekly advice.

Which operating systems does it support?

It supports Windows, Linux, and macOS.

What formats does 3D InterOp handle?

It reads and writes more than 30 CAD, BIM, mesh, and visualization formats. Its native-format support includes reading and writing CATPart and CATProduct.

Does it provide API access?

Yes. It is a software development toolkit with an API, C++ and C# interface documentation, sample implementations, and a JavaScript-based 3DScript application for prototyping and debugging.

Who makes 3D InterOp?

Spatial offers the toolkit. Spatial Corp is identified in its privacy policy as a wholly owned Dassault Systèmes subsidiary.

Facts from 3D InterOp's own pages

Associativity and PMI: It supports stable CAD topological identifiers and graphical and semantic PMI with geometrical associativity. · spatial.com, 9 Oct 2026
Deployment: Spatial says 3D InterOp runs on Windows, Linux, and macOS and supports cloud deployment. · blog.spatial.com, 9 Oct 2026
Developer support: Spatial says it provides C++ and C# interface documentation, sample implementations, a JavaScript-based 3DScript application for prototyping and debugging, and support and services guidance. · spatial.com, 9 Oct 2026
Downloads: The Spatial download and documentation site requires login credentials to access downloads. · download.spatial.com, 9 Oct 2026
Evaluation: Spatial offers a free trial through an evaluation process that includes a discovery call, an evaluation SDK, and weekly advice; the page does not state a trial duration. · spatial.com, 9 Oct 2026
Evaluation and pricing: Spatial invites prospective customers to request an evaluation; the opened product page does not list a price. · spatial.com, 9 Oct 2026
Format coverage: The SDK reads and writes over 30 CAD, BIM, mesh, and visualization formats. · spatial.com, 9 Oct 2026
Founded: 1986 · spatial.com, 23 Sept 2026
Geometry repair: Automated healing, stitching, and re-surfacing produce topologically valid solid models for downstream workflows. · spatial.com, 9 Oct 2026
Headquarters: Broomfield, Colorado, USA · spatial.com, 23 Sept 2026
Industries: Spatial describes support for major AEC, BIM, and plant design formats across construction project workflows. · spatial.com, 9 Oct 2026
Integrations: The product page names 3D ACIS Modeler, CGM Modeler, and Parasolid as modelers supported for CAD/CAM data exchange. · spatial.com, 9 Oct 2026
Kernel compatibility: It supports CAD/CAM data exchange for applications using ACIS, CGM, or Parasolid modelers. · spatial.com, 9 Oct 2026
Native formats: Using the CGM kernel and native APIs, it reads and writes CATPart and CATProduct and reads CATIA and SolidWorks metadata without a CAD license. · spatial.com, 9 Oct 2026
Parallel import: It uses multiple threads and processes to import data more quickly. · spatial.com, 9 Oct 2026
Performance: Concurrent import uses multiple threads and processes to speed up data import. · spatial.com, 9 Oct 2026
PMI support: It supports graphical and semantic product manufacturing information with geometric associativity for engineering reviews and manufacturing or measurement process automation. · spatial.com, 9 Oct 2026
Product: 3D InterOp is a software development toolkit for exchanging visualization, exact B-rep geometry, and metadata among CAD formats. · spatial.com, 9 Oct 2026
Release cadence: Spatial says 3D InterOp has two major releases per year and minor weekly updates to support newer format versions. · spatial.com, 9 Oct 2026
Repair: Automated healing, stitching, and resurfacing can produce topologically valid solid models for downstream workflows. · spatial.com, 9 Oct 2026
Security: The product page opened for this research does not state a security certification or compliance standard. · spatial.com, 9 Oct 2026
Security and privacy: Spatial's privacy policy says Spatial Corp is a wholly owned Dassault Systèmes subsidiary and describes its processing of personal data; the page does not describe 3D InterOp product security certifications. · spatial.com, 9 Oct 2026
Selective import: Its API can incrementally import product structure, tessellated geometry, exact geometry, and manufacturing information as needed. · spatial.com, 9 Oct 2026
Updates: Spatial says the toolkit has two major releases per year and minor weekly updates, while format version support is updated with each release. · spatial.com, 9 Oct 2026

Where 3D InterOp stands on Freedom251

3D File Converter Software#22 of 31