Dendro is a volumetric modeling plug-in for Grasshopper built on top of the OpenVDB library. It provides multiple ways to wrap points, curves, and meshes as a volumetric data type, allowing you to then perform various operations on those volumes. Dendro includes components for boolean, smoothing, offsets, and morphing operations.
Installation instructions are in the PDF. Make sure you have disabled COFF and all the files are unblocked.
Dendro is built to run on x64 architectures only. If you want to target a specific Rhino SDK, then you can download the source and build that with minimal steps. Instructions are found on Github.