McNeel 

RhinoCommon is the cross-platform .NET plugin SDK for Rhino

Grasshopper is a .NET (RhinoCommon) plugin for Rhino 5 for Windows and later.

Rhino3dmIO is a .NET toolkit for reading and writing 3dm files

RhinoWindows and Eto.Wpf

Rhino3dmIO is a .NET toolkit for reading and writing 3dm files

Rhino3dmIO is a .NET toolkit for reading and writing 3dm files

.net Class Library for creating Three.js compatible objects.

rhino3dm is a set of libraries based on the OpenNURBS geometry library with a "RhinoCommon" style. This provides the ability to access and manipulate geometry through .NET, Python or JavaScript applications independent of Rhino.

Rhino.Inside assembly resolver.

RhinoCommon and Grasshopper templates for Rhino. To install the templates in this package, run 'dotnet new --install Rhino.Templates'.

Generates Python declaration syntax sections

SandCastle BuildAssembly component to resolve thirdparty reference links