Flash also has text spans for displaying blocks of text. It is not too hard to figure out the line-breaking if you were doing the rendering on the server - Java

Flash also has text spans for displaying blocks of text. It is not too hard to figure out the line-breaking if you were doing the rendering on the server - Java fonts and other text related code gives a pretty decent approximation to what the Flash Player does. However Flash's text fields which does the wrapping for you and has rudimentary HTML support is a lot easier to use.