In July of 2012 Microsoft announced the preview build of the Napa toolset. Microsoft today announced updates to both "Napa" and "LightSwitch" (originally codenamed "KittyHawk") is the name for Microsoft's tool for building business applications for the desktop, the Web and the cloud. The HTML rendering capability is aimed at developers interested in building touch-oriented apps using HTML5. Both have been updated are now available for download. Read the full story here.
Napa, codename for Microsoft's pre-development toolset for the development of new Office and SharePoint apps, and LightSwitch codename for Microsoft tool for building Business apps.