keynote powerpoint Apple recently demonstrated a new version of Keynote software as part of the iWorks ’09 office productivity suite. Among other enhancements, Keynote ’09 includes an array of new animations and transitions effects that you can add between slides.

Now Keynote ’09 is available for Mac only but if you are on Windows or use another program like Microsoft PowerPoint to create presentations, SlideRocket is coming up with something that may interest you.

SlideRocket has taken some of the new transition effects that were introduced in Keynote ’09 and added them to their own web presentation software. That means you can upload your existing PowerPoint slides on to SlideRocket and apply transitions that were otherwise only available in Keynote.

SlideRocket founder Mitch Grasso says that this is “one of the unsung advantages of web applications – we can iterate new versions easily and quickly.”