networkD3

http://christophergandrud.github.io/networkD3/

networkD3 provides tools for creating D3 JavaScript network graphs from R.

library(networkD3)
data(MisLinks, MisNodes)
forceNetwork(Links = MisLinks, Nodes = MisNodes, Source = "source",
             Target = "target", Value = "value", NodeID = "name",
             Group = "group", opacity = 0.4)