The Quip Node.js SDK by Quip allows API communication to access collaboration features that can help developers to facilitate document upload, list sharing, and spreadsheet creation in web services. Sample code displays how to authenticate and access a folder from a predetermined client.
Late last week Google announced the release of version 3.0 of their Google Documents List Data API. This latest release addresses several feature requests filed by developers and also aims to improve speed and stability of the API itself (our Documents List Data API Profile). The most notable detail in this release is the ability to upload and download files in PDF.