JSON Serialization + Deserialization for Grasshopper

GL Studio is an advanced manufacturing toolkit that enables users to quickly create advanced lattice geometries using 100% native CAD data (B-reps).

Fennec Addon have some useful tools

Chameleon creates a live link between Grasshopper and Zbrush to quickly exchange geometry and parametrically set up command sequences.

Hide or show geometry in Rhino that is referenced into the Grasshopper document.

BrickBox allows to manage Grasshopper snippets from a canvas button which makes to drop and add snippets much faster

Rhino 6 Level 1 Training Guide and Models in English, French, German, Spanish, Italian and Corean

C# scripting in Grasshopper is a step by step guide for beginners with many examples and tutorials.