The Mantis is virtual script component plugin for grasshopper,and it can create pulugin without VS!

Provides additional components to explore, animate and fabricate generative shapes with Grasshopper®

Rhino Plus is a plug-in that gives more commands in Rhino for easy use.

Fennec Addon have some useful tools

Many Rhino models of various fasteners.

Jevero is the best support for pattern engineers, footwear developers and designers. From design to production in a single tool.

This plugin can add some addtional ui and menu to the components.

Alternatives to native Rhino commands, Trim and Split, respectively, for trimming/splitting surfaces with curves and/or other surface edges.