I’ve been thinking about Konfabulator this weekend a bit. It uses the Spidermonkey Javascript runtime from the Mozilla project as it’s core. I think it’s worth noting that we are seeing more and more fruits of open source code on the Mac OS X platform all the time now. Open Source seems to be enabling innovation, and writing something like Konfabulator from scratch would proabably have been a much more daunting task without the ability to embed the Javascript runtime. I seem to be seeing people note on a regular basis that Mac OS X is the best platform for innovation by independent developers now, and open source code is one big reason for that.