The National Fusion Collaboratory (NFC) is creating and deploying collaborative software tools to unite magnetic fusion research in the United States. In particular, the NFC is developing and deploying a national FES "Grid" (FusionGrid) for secure sharing of computation, visualization, and data resources over the Internet. The goal of FusionGrid is to allow scientists at remote sites to participate as fully in experiments, machine design, and computational activities as if they were working on site thereby creating a unified virtual organization of the geographically dispersed U.S. fusion community.