Microsoft OneNote is a notebook tool to take and organize notes. The OneNote service API allows developers to integrate and manipulate OneNote user data in their own applications on a variety of platforms and devices.
This code sample gives users examples of how to use OneNote API with Windows Store.
The newest version of the Google Drive API should help developers more easily add Drive to their own apps. Google says the improved API is more consistent and simpler for first-time developers. Drive within apps can be used for file storage in addition to creating and editing files.