Tokyo Institute of Technology has four IEC devices of different shapes: a spherical machine, a cylindrical device, a co-axial double cylinder and a magnetically assisted device.
University of Wisconsin-Madison A group at Wisconsin-Madison has been running a very large, funded, fusor program since 1991.
Turkish Atomic Energy Authority In 2013 this team built a 30 cm fusor at the Saraykoy Nuclear Research and Training center in Turkey. This fusor can reach 85 Kv and do deuterium fusion, producing neutrons per second.
University of Illinois Dr. George Miley's team at the fusion studies laboratory has built a ~25 cm fusor which has produced neutrons using deuterium gas.
University of Sydney Dr. Joseph Khachan's group in the Department of Physics has built a variety of IEC devices in both positive and negative polarities and spherical and cylindrical geometries.
Atomic Energy Organization of Iran Researchers at Shahid Beheshti University in Iran have built a 60 cm diameter fusor which can produce neutrons per second at 140 kilovolts using deuterium gas.
Los Alamos National Laboratory In the late nineties, researchers purposed and built a fusor-like system for oscillating plasma, inside a fusor. This device is known as the Periodically Oscillating Plasma Sphere or POPS.
Massachusetts Institute of Technology For his doctoral thesis in 2007, Carl Dietrich built a fusor and studied its potential use in spacecraft propulsion. In addition, Tom McGuire did his thesis on fusors with multiple cages and ion guns.
ITT CorporationHirschs original machine was a 17.8 cm diameter machine with 150 Kv voltage drop across it. This machine used ion beams.
Phoenix Nuclear Labs Has developed a commercial neutron source based on a fusor, achieving neutrons per second with the deuterium-deuterium fusion reaction.
Amateur
A number of amateurs have built working fusors and detected neutrons. Many fusor enthusiasts connect on forums and message boards online. Below are some examples of working fusors.
Richard Hull Since the late nineties, Richard Hull has built several fusors in his home in Richmond, Virginia. In March 1999, he achieved a neutron rate of neutrons per second. Hull maintains a list of amateurs who have gotten neutrons from fusors.
Carl Greninger Founded the Northwest Nuclear Consortium, an organization in Washington state which teaches a class of a dozen high school students nuclear engineering principles using a 60 kV fusor.
Michael Li In 2003, Michael Li became the youngest person to build a fusor and won second place in the US's Intel Science Talent Search winning a $75,000 college scholarship.
Mark Suppes A web designer for Gucci in Brooklyn New York, built a working fusor on a path to building the first amateur Polywell.
Jamie Edwards who fused the atom at 13, at his middle school in England. He received a letter from the Duke of York, was invited on The David Letterman Show and gave a TED talk.
Conrad Farnsworth of Newcastle, Wyoming produced fusion in 2011 at 17 and used this to win a regional and state science fair.