Ready-to-use 3D CAD solutions

Share, view and document 3D CAD
without the engineering license.

Off-the-shelf tools from Tech Soft 3D. Instant download, instant license, no developers required.

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Trusted by engineering teams worldwide

Find the right tool for your 3D CAD workflow

Product Suite

SpinFire

The leading multi-CAD viewing platform. SpinFire Insight lets teams visualize, measure, and collaborate on 3D models across 30+ native CAD formats.

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Product Suite

Tetra4D

Convert, enrich, and automate native 3D CAD data into rich, interactive 3D PDF documents. Trusted by engineering teams for technical documentation workflows.

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For developers and ISVs

Building 3D engineering software? Skip the heavy lifting.

SpinFire and Tetra4D are finished products built on HOOPS, our developer toolkit of battle-tested CAD import, 3D visualization, and publishing engines that also power hundreds of other commercial applications.

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Looking for CAD conversion?

Translate native CAD to JT, 3D PDF, and more — with full fidelity.

SpinFire Convert (formerly CADTranslate / CADPublish by Theorem) translates rich 3D data across CATIA, Creo, NX, SOLIDWORKS, and more — preserving geometry, PMI, and product structure for downstream PLM workflows.

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  • CATIA, Creo, NX, SOLIDWORKS, Inventor & STEP supported
  • Output to JT, Creo View, 3D PDF & HTML
  • Preserves PMI, product structure & metadata
  • Batch processing for Teamcenter, Windchill & 3DEXPERIENCE
  • Built on Theorem technology — trusted CAD translation since 1990