This is the third API profile in what we are calling the "Growth Series." HelloSign provides an API that allows developers to create an eSigning experience that's a seamless part of a digital document. This feature along with others has fueled a 10x growth in calls made to its API.
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.