I just ran across this excellent Flash-based tool for mapping commands between the old UI and the ribbon. There is a downloadable version as well (note: not all of the menu bar content has been filled in yet.) Thanks to Nicholas at Revitize for building this. The commentary on the blog suggests that Autodesk should have created a similar tool in the first place. While this may be true, I have a slightly more "glass half-full" take on this. The creation of this tool is a great example of crowdsourcing. The guys at Revitize saw a gap in our execution and rolled up their sleeves and built something to fill the gap. Kudos. This brings to mind the Revit API and the move towards empowering the "crowd" to build more functionality on top of the Revit platform. For more on this concept, see Why API as a Strategy, written by Emile Kfouri, Autodesk's Senior BIM Platform Manager. So what, if any, third party add-ons are you using with Revit? How many of you are currently writing applications with the Revit API?