StirlingLabs.Assimp.Net 23.4.1

Prefix Reserved
dotnet add package StirlingLabs.Assimp.Net --version 23.4.1                
NuGet\Install-Package StirlingLabs.Assimp.Net -Version 23.4.1                
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="StirlingLabs.Assimp.Net" Version="23.4.1" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add StirlingLabs.Assimp.Net --version 23.4.1                
#r "nuget: StirlingLabs.Assimp.Net, 23.4.1"                
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install StirlingLabs.Assimp.Net as a Cake Addin
#addin nuget:?package=StirlingLabs.Assimp.Net&version=23.4.1

// Install StirlingLabs.Assimp.Net as a Cake Tool
#tool nuget:?package=StirlingLabs.Assimp.Net&version=23.4.1                

Assimp.Net from Stirling Labs

CD NuGet version (StirlingLabs.Assimp.Net)


This is a fork of assimpnet by Starnick, a cross-platform .NET wrapper for the Open Asset Import Library (otherwise known as Assimp), which is a 3D model import-export library. The primary motivation is for this library to power content pipelines to import and process 3D models. Please see the Assimp website for a full list of supported formats and features. Each version of the managed wrapper tries to maintain parity with the features of the native version.

We intend to keep this fork close to the original, with the main differences being a focus on supporting modern .Net, Apple Silicon and a open, publicly verifiable build chain.

The managed assembly is compiled as AnyCpu and the native 64-bit multi-threaded binaries are loaded dynamically (including support for Apple Silicon).

The library is split between two parts, a low level and a high level. The intent is to give as much freedom as possible to the developer to work with the native library from managed code.

Low level

  • Native methods are exposed via the AssimpLibrary singleton.
  • Structures corresponding to unmanaged structures are prefixed with the name Ai and generally contain IntPtrs to the unmanaged data.
  • Located in the Assimp.Unmanaged namespace.

High level

  • Replicates the native library's C++ API, but in a way that is more familiar to C# developers.
  • Marshaling to and from managed memory handled automatically, all you need to worry about is processing your data.
  • Located in the Assimp namespace.

Supported Frameworks

This version of the library is focussed on modern .NET, targeting specifically:

  • .NET Standard 2.1
  • .NET 6
  • .NET 7

The native binaries are resolved by the NuGet dependency graph automatically and are built & packaged in a closely-following fork of assimp.

Supported Platforms

The NuGet package supports the following Operating Systems and Architectures:

  • Windows x64
  • Linux x64
  • MacOS x64 & Apple Silicon (M1)

Unity Users

A Unity plugin is inherited from Starnick but this is not our focus so we recommend that you use the original.


The library is licensed under the MIT license. This means you're free to modify the source and use the library in whatever way you want, as long as you attribute the original authors. The native library is licensed under the 3-Clause BSD license. Please be kind enough to include the licensing text file (it contains both licenses).

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 is compatible.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 is compatible.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.1 is compatible. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
23.4.1 1,035 4/21/2023
23.4.0 161 4/8/2023