The government apps and mobile sites allow you to access official information on various topics from the palm of your hand. iphone, ipad, android, etc.
Univerisity of Indiana Dept of Computer Science and School of Informatics. This site provides access to an online database containing government documents originally publishied on CDROM. There are two interfaces, a Database interface that enables browsing the entire collection and a Search interface that allows searching for specific documents using CQL queries. Through either interface it is possible to access the original CDROM contents exported as WebDAV. These WebDAV directories can be directly "mounted" on some operating systems (OS X, Linux).
The Digital Registry is a directory listing of U.S. Government publication digitization efforts. Its goal is to provide a comprehensive listing of all these digitization efforts. Included in the listings are: An overview of the project. The institution(s) and partners involved in the digitization. The scope of the digitization project (e.g., by volume, year, Congress, administration, geographic region). The status of the project (planning phase, in-progress, completed). Technical specifications of the digitization output (e.g., file format, metadata schema). Whether a digitization project is seeking collaborative assistance. A link to the publicly-accessible digitized content.