UnityMeshImportExample
Runtime mesh import example for Unity.
Update: Tested on Linux, macOS and Windows.
Dependencies
The following dependency is already included in the project.
The following dependency is imported as Unity package via Packages/manifest.json.
Note that UnityMeshImporter uses C# .NET wrapper for the Assimp, AssimpNet
Quickstart with Example

This project has .obj and .dae (collada) mesh examples in Examples directory.
Notes
UnityMeshImporter uses Unity Standard shader. Standard shader is added to Project Settings > Graphics > Built-in Shader Settings > Always Included Shaders.