I've been looking for specifications on Google's Sketchup but can't find any.
Google isn't publicly releasing the specifications and their Sketchup tool doesn't export to any formats except for other proprietary formats of Google. The program has a great user interface. It seems like a waste that other software can't make use of the models that come out of it.
Do you know of a any reverse engineering of the format? Are there any unofficial specs available somewhere?