Browse free open source C++ 3D Viewers and projects below. Use the toggles on the left to filter open source C++ 3D Viewers by OS, license, language, programming language, and project status.

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  • 1
    Celestia

    Celestia

    Real-time 3D visualization of space

    Celestia is a real-time 3D visualization of space, allowing users to explore the universe in three dimensions. It functions as an interactive planetarium, providing expandable content and the ability to create custom worlds.
    Downloads: 14 This Week
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  • 2
    GLC-Player
    GLC_Player is a OpenGL Open Source 3D viewer used to view 3d models (COLLADA, 3DXML, OBJ 3DS STL OFF COFF Format) and to navigate easily in these models.
    Downloads: 85 This Week
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  • 3
    KiCad EDA

    KiCad EDA

    A Cross Platform and Open Source Electronics Design Automation Suite

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    Downloads: 249 This Week
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  • 4
    3DimViewer

    3DimViewer

    3DimViewer is a lightweight 3D viewer of medical DICOM datasets.

    3DimViewer is a lightweight 3D viewer of medical DICOM datasets that is distributed as open source software. The viewer is multiplatform software written in C++ that runs on Windows, Mac OS X and Linux systems. 3DimViewer source codes are available on Bitbucket (https://bitbucket.org/3dimlab/3dimviewer). Video tutorials can be found on YouTube (https://www.youtube.com/playlist?list=PLCvwUmKRw9ZO4YexLKEXmw_2jPo-kXVRn).
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    Downloads: 112 This Week
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  • 5
    LPub3D

    LPub3D

    LDraw™ editor for LEGO® style digital building instructions.

    LPub3D is an Open Source WYSIWYG editing application for creating LEGO® style digital building instructions. LPub3D is developed and maintained by Trevor SANDY. It uses the LDraw™ parts library, the most comprehensive library of digital Open Source LEGO® bricks available (www.ldraw.org/ ) and reads the LDraw LDR and MPD model file formats. LPub3D is available for free under the GNU Public License v3 and runs on Windows, Linux and macOS Operating Systems. LPub3D is also available as a Linux 'no-install', multi-platform AppImage. Portions of LPub3D are based on LPUB© 2007-2009 Kevin Clague, LeoCAD© 2025 Leonardo Zide, LDView© 2025 Travis Cobbs & Peter Bartfai and additional third party components. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this application. LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this application. © 2015-2025 Trevor SANDY
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    Downloads: 37 This Week
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  • 6

    LDView

    Real-time 3D viewer for LDraw LEGO models with OpenGL acceleration.

    LDView is a 3D viewer for LDraw LEGO models with a focus on quality rendering with good performance. It also contains many features geared specifically toward LDraw part authoring.
    Downloads: 9 This Week
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  • 7
    GLTF/GLB Windows Shell Extension: This shell extension automatically adds thumbnail images to .glb files in Windows File Explorer and provides a right click menu option to generate a 3D preview image for .gltf files. Supports multi-file select and directory processing. Pre-built Windows x64 installer available at https://buymeacoffee.com/nathancrews/e/255640 LAS/LAZ Pointcloud Windows Shell Extension: This "quick viewer" shell extension provides a Windows File Explorer right click menu option to quickly generate 3D preview images for large and small .las and .laz files. (Disclaimer: Processing time depends on compute hardware) Typical processing time for 100mb .las is about 2 seconds. 25mb .laz file process in about the same times. Files are processed in parallel using available CPU cores. Pre-built Windows x64 installer available at https://buymeacoffee.com/nathancrews/e/255641
    Downloads: 8 This Week
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  • 8
    TerraForge3D

    TerraForge3D

    3D Procedural Modelling and Procedural Texturing Tool in OpenGL/C++

    What can this do? Generte 3D Terrain Procedrally Export Terrain mesh as OBJ You can write and test your own shaders An Inbuilt IDE for shaders Test under different lighting A 3D viewer A Node based as well as Layer based workflow Save the project(custom .terr3d files) Hieght map visualizer in node editor Wireframe mode Custom Lighiting Customizable Geometry Shaders included in rendering pipeline Skyboxes Multithreded Mesh Generation Expected Goals for Version 3 Add a lot more Nodes Export to heightmaps(both PNG and also custom format) Node based procedural texture editing Custom Skyboxes Completely usable 3D procedural modelling and texturing pipeline Fix as many bugs I can find Things that may be added Wren scripting to add custom algotrithms Procedural grass and foliage Fix more bugs!
    Downloads: 4 This Week
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  • 9
    geocando
    Geocando is a 3d viewer for visualisation and querying of geodata and geomodels. It is especially developed for Paradigm's GOCAD(R) objects. Another supported format is the typical GIS exchange format "ESRI Shapefile".
    Downloads: 2 This Week
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  • 10
    q3DViewer

    q3DViewer

    Simple 3D viewer

    Simple 3D viewer based on QT and VTK
    Downloads: 1 This Week
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  • 11
    The 3D Toolkit provides algorithms and methods to process 3D point clouds. In includes automatic precise registration (6D simultaneous localization and mapping, 6D SLAM) and other tools, e.g., a fast 3D viewer, plane extraction software, etc.
    Downloads: 0 This Week
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  • 12
    A Unix-based 3D Viewer for S3d File, used for rendering data collected from common cameras (e.g. stereo cameras)
    Downloads: 0 This Week
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  • 13
    GEOMS2

    GEOMS2

    Geostatistics and geosciences modeling software

    GEOMS2 is a geostatistics and geosciences modeling software. Provides interface for grid (mesh), point, surface and data (non-spatial) objects. It has a 3D viewer and 2D plots using the well known Python engines Mayavi and Matplotlib. It has several functions to manipulate your data as well as provide univariate and multivariate analysis. NOTE: The software is still an early beta. Please tell us if you found a bug. Download datasets for students of Geostatistics 2017 (Petroleum Engineering): https://sourceforge.net/projects/geoms2/files/Geostatistics_Petroleum.zip/download Download datasets for students of Geostatistics 2017 (Geology and Mining Engineering): https://sourceforge.net/projects/geoms2/files/Geostatistics_Mining.zip/download Old: http://sourceforge.net/projects/geoms2/files/SETS_geoestatistica2_2015.7z/download https://sites.google.com/site/cmrpsoftware/downloads/Quarry_sets.7z?attredirects=0&d=1 http://sourceforge.net/projects/geoms2/files/Mining.7z/download
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    Downloads: 0 This Week
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  • 14

    IPSA - Inventor Physics Simulation API

    Easy to use physics simulation combining ODE with OpenInventor.

    Create phyiscal simulations easily through IPSA which combines the OpenInventor 3D API with the Open Dynamics Engine (ODE). Scenes are read from .iv files and simulated in the supplied viewer applications. Find it at: http://ipsa.sourceforge.net
    Downloads: 0 This Week
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  • 15

    My3DbasicMathModel

    A basic math model of 3D system

    I design a basic math theory of 3D and write a linux application to verify my theory. I also upload the document 3DsystemDesign.docx to show the process of my theory.
    Downloads: 0 This Week
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  • 16
    OBExtensions is a extension library for the chemoinformatics library Openbabel. It provides extensions to Openbabel, being mostly GUI widgets. OBExtensions has a 2D/3D viewer, 2D coordinates generator and some other extensions.
    Downloads: 0 This Week
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  • 17
    OsgView is 3D viewer based od OpenSceneGraph and QT toolkit.
    Downloads: 0 This Week
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  • 18
    pcpViewer is a 3D viewer of data gathered through the excellent "Performance Co-Pilot" library (http://oss.sgi.com/projects/pcp). You can see usage of CPU time, net devices, memory, hard drives, and virtually any data exported by the pcp library and da
    Downloads: 0 This Week
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  • 19
    Quantum Toolkit
    Quantum Mechanical Toolkit And 3D Viewer for C++. Allows Data Visualisation via Images, Surfaces and Volume plots using OpenGL, as well as rapid development Quantum Mechanical Simulations. Uses the Blitz++, VTK Visualisation and Qt Libraries.
    Downloads: 0 This Week
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  • 20
    Educational 3D viewer.
    Downloads: 0 This Week
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  • 21
    A open source PACS clinet with 3D Viewer supported by Haiqiao Inc.
    Downloads: 0 This Week
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