Node Kit provides a system for managing and sharing node setups across different Blender projects. The tool allows you to save your current node configurations as global presets, which can then be applied to objects in any other open blend file. Users can export their node presets into a single file and import them on other machines, facilitating a unified node library across devices. The addon includes features to organize presets into folders, rename them, and selectively save specific nodes rather than the entire tree. It supports standard shader nodes, Geometry Nodes, and the third-party Animation Nodes addon.