I try to be very cautious with this question. There are at least three different web-development frameworks available in Smalltalk. The most prominent seems to be Seaside but there is also AIDA/Web and Iliad.

They seems to be very similiar, but this impresson may be wrong. I wonder who has tried the different tools and can share the pros/cons of the different packages.

A more concrete question would be, do yo know of let's say any software in the bookkeeing area which has choosen to use either of the three (or other) web development frameworks.