Lloyd Rutledge and Dick C.A. Bulterman are both researchers at the CWI, the Dutch National Center for Mathematics and Computer Science. They were members of the W3C working group that developed SMIL during all development of the standard.
Lloyd Rutledge's research at CWI involves adaptable hypermedia, and standards for it such as SMIL. He received his Sc.D. from the University of Massachusetts Lowell.
Dick C.A. Bulterman received his Ph.D. from Brown University. He lead the development of GRiNS, and authoring and playback environment for SMIL 2.0. He is now leading the development of Ambulant, an open-source player for SMIL.