Exposing Falsehoods and Revealing Truths
This article from 2008 says a test was planned for the next year. I've heard nothing more about it, so it may exist now, but did it exist in 2001, when 9/11 took place? I doubt it. Also the weapon described would supposedly be able to burn a hole in a tank. This is far from being able to burn a plane-sized hole in a building.
I know Dr. Judy Wood at one time hypothesized a laser as the source of the hole in the building, but I don't find this to be a likely explanation, firstly, because the existing videos do not show anything like this happening to the building. Granted, it remains a mystery how the plane-shaped hole was created. I feel certain it wasn't a plane that made it, so I assume it was made by explosives. But how and exactly where explosives would have had to have been placed to create the hole is unclear.