PybusJ writes: IBM have released an online HTML5 editing tool Maqetta, hosted by the Dojo foundation. eWeek calls it an Open-Source Answer to Flash and Silverlight. That remains to be seen, but it does look interesting.
"'Tis true, 'tis pity, and pity 'tis 'tis true."
-- Poloniouius, in Willie the Shake's _Hamlet, Prince of Darkness_