McNeel 

RhinoCommon by: McNeel
RhinoCommon SDK for Rhino WIP for Windows
  • 11,223 total downloads
  • last updated 8/1/2018
  • Latest version: 6.7.18210.11281
  • rhino3d
RhinoCommon is the cross-platform .NET plugin SDK for Rhino
Grasshopper by: McNeel
Grasshopper SDK for Rhino WIP for Windows
  • 8,402 total downloads
  • last updated 8/1/2018
  • Latest version: 6.7.18210.11281
  • rhino3d
Grasshopper is a .NET (RhinoCommon) plugin for Rhino 5 for Windows and later.
Rhino3dmIO.Desktop by: McNeel
Rhino3dmIO toolkit for Rhino WIP for Windows
  • 4,709 total downloads
  • last updated 8/1/2018
  • Latest version: 6.7.18210.11281
  • rhino3d
Rhino3dmIO is a .NET toolkit for reading and writing 3dm files
ThreeLib by: McNeel
  • 4,648 total downloads
  • last updated 11/10/2017
  • Latest version: 1.0.208
.net Class Library for creating Three.js compatible objects.
Rhino3dmIO.iOS by: McNeel
Rhino3dmIO toolkit for Rhino WIP (iOS)
  • 4,059 total downloads
  • last updated 8/1/2018
  • Latest version: 6.7.18210.11281
  • rhino3d
Rhino3dmIO is a .NET toolkit for reading and writing 3dm files
RhinoWindows by: McNeel
  • 3,209 total downloads
  • last updated 8/1/2018
  • Latest version: 6.7.18210.11281
RhinoWindows and Eto.Wpf
Rhino3dmIO.Android by: McNeel
Rhino3dmIO toolkit for Rhino WIP (Android)
  • 1,952 total downloads
  • last updated 8/1/2018
  • Latest version: 6.7.18210.11281
  • rhino3d
Rhino3dmIO is a .NET toolkit for reading and writing 3dm files