📑 Table of Contents▼
Open Asset Import Library
DevelopersAlexander Gessler
Thomas Schulze
Kim Kulling, et al.
Stable release
6.0.5[1] Edit this on Wikidata / 30 April 2026; 50 days ago (30 April 2026)
Operating systemCross-platform
Type3D model import library
LicenseBSD
Websitewww.assimp.org
Repository

Open Asset Import Library (Assimp) is a cross-platform 3D model import library which aims to provide a common application programming interface (API) for different 3D asset file formats. Written in C++, it offers interfaces for both C and C++. Bindings to other languages (e.g., BlitzMax, C#, Python) are developed as part of the project or are available elsewhere.[2] Given the importance and benefits of Assimp, a pure Java (/Kotlin) port is being developed here.

The imported data is provided in a straightforward, hierarchical data structure. Configurable post processing steps (i.e., normal and tangent generation, various optimizations) augment the feature set.[3]

Assimp currently supports 57 different file formats for reading, including COLLADA (.dae), 3DS, DirectX X, Wavefront OBJ and Blender 3D (.blend).[4] As of Version 3.0 Assimp also provides export functionality for some file formats.[5]

Projects using Assimp

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Several open source projects use Assimp, such as MonoGame[6] and Urho3D.[7]

Resonite (and its predecessor NeosVR) – A social virtual reality platform that uses Assimp to import a wide range of 3D model formats, facilitating its real-time and collaborative content creation features. [8][9]

Torque3D added Assimp in Torque3D 4.0.[10]

Godot added Assimp in Godot 3.2,[11] but this was replaced in Godot 3.3 and later.[12][13]

See also

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References

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  1. ^ "Release 6.0.5". 30 April 2026. Retrieved 1 May 2026.
  2. ^ "Docs". Archived from the original on 2018-03-10. Retrieved 2018-03-10.
  3. ^ "Features".
  4. ^ "Features".
  5. ^ "Open Asset Import Library".
  6. ^ "MonoGame.Dependencies/Assimp at master · MonoGame/MonoGame.Dependencies". GitHub.
  7. ^ "urho3d/Source/ThirdParty/Assimp at master · urho3d/urho3d". GitHub.
  8. ^ "3D Model Import". NeosVR Wiki (Archived). 2018-04-21. Archived from the original on 2023-07-28. Retrieved 2025-07-18.
  9. ^ "FrooxEngine - Resonite Wiki". wiki.resonite.com. Retrieved 2025-07-18.
  10. ^ "Version 4.0". Torque3D.
  11. ^ Lee, K. S. Ernest (iFire) (2018-11-19). "Add Open Asset Importer to Godot". Godot. Retrieved 2023-08-21. Supports various formats from Open Asset Import Library (assimp). The focus is on FBX and MMD.
  12. ^ MacPherson, Gordon (2020-10-30). "FBX importer rewrite". Godot. Retrieved 2020-11-01. This is a complete rewrite of the importer. It will give more deterministic behavior. Over 1 year has gone into the development of this importer to remove the burden of the FBX SDK.
  13. ^ Lee, K. S. Ernest (iFire) (2022-03-28). "Add fbx2gltf support for importing .fbx files". Godot. Retrieved 2023-08-21. Lets you drag or place .fbx files in the project folder and it will import the files. An editor setting sets the location of the fbx2gltf binary.
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