JavaScript API for Office(A JavaScript API that provides simple and consistent programmatic access to Office documents and applications across Office client environments through common as well as application-specific data types, objects, functions and events)
SkyDrive for Mac(An app for Mac computers that creates a folder on the user's computer, downloads the contents of their SkyDrive, and keeps the folder in sync with any file changes online and among additional computers)
Microsoft Power Map for Excel(The Excel feature that allows users to plot geographic and temporal data visually, analyze that data in 3D, and create interactive tours to share with others)
