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Open-source 3D CAD Foundation Geometry Engine

Building a self-reliant open-source 3D geometry ecosystem, uniting industry and academia to strengthen the digital foundation of domestic industrial software.

Core Engine Capabilities

Powered by self-controlled foundational technologies, we break through technical barriers, fully empower R&D and design, and drive intelligent manufacturing into a new chapter of independent innovation.

Geometric Constraint Solving

A high-performance 2D/3D geometric constraint solver that delivers stable and efficient solving for sketching and assembly constraints.

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3D Solid Modeling

B-rep boundary representation, boolean operations, sweeping, lofting and blending — covering complex surface and solid modeling needs.

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Assembly & Data Exchange

Import and export of mainstream formats such as STEP and IGES, enabling both top-down and bottom-up collaborative assembly design.

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Faceting & Simulation Analysis

High-quality mesh faceting and geometric query capabilities, providing the geometric foundation for simulation workflows and result visualization.

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Latest Updates

Project 1 Standalone gme-thu Release (07-03)

Release date: 2026-07-03

Resolved the Gitee issues newly submitted on June 29 and completed the Tsinghua directory structure adjustment.

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3D CAD Geometric Modeling Engine v3.0.1 Release

Release date: 2026-07-01

Project 2 compiled modules now integrate Project 1 modules, aligning the GME directory structure with the coupled version.

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3D CAD Geometric Modeling Engine v3.0.0 Release

Release date: 2026-06-30

Project 2 compiled modules integrate Project 1 modules for the first time, with GME tests and the Gtest framework added.

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Project 1 Standalone gme-thu Release (06-30)

Release date: 2026-06-30

Resolved the Gitee issues newly submitted on June 24.

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Ecosystem Partners

Bringing together industry leaders to break technical boundaries, build a multi-dimensional partnership matrix and grow a thriving ecosystem together.

Partner Matrix
ZWSOFTCAXAHuaweiZhejiang UniversitySD-HTCYuandao IntelligenceTongji UniversityVAYOInstitute of Software, CASShanghai Jiao Tong UniversityPERA GlobalOpen3DGMBE

Join the Open3DGMBE Community

Whether you research geometric algorithms, build CAD software or use industrial software, you are welcome to contribute and build with us.