About two and a half years ago we promoted Simpson Strong-tie's Wall Bracing Calculator. A new contender has entered the ring, APA (the plywood people). We played around with their new calculator and found it to be a little different than Simpson's. For one, the walls are adjustable more on the fly. With Simpson, you need to use their Java back button and re-enter inputs. With APA you can see changes as you go. The biggest difference is that you can enter each braced wall section and opening so that APA can calculate not only the total wall bracing needed, but each panel as qualifying or not. Pretty slick.
To play around with it, go here. You will need an account to access their website but it's totally worth it.
And make sure you save your work (as an XML file, very cool) before exporting to a pdf. The pdf feature is temporarily broken. *edit* PDF function fixed. But the xml feature tells me that I could edit the hard data in a text editor, similar to a Google Earth kml file. Take that, Simpson!
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