The Wayback Machine - https://web.archive.org/web/20130306143835/http://www.wolfram.com:80/cdf/

Introducing the Computable Document Format (CDF)

Today's online documents are like yesterday's paper—flat, lifeless, inactive. Instead, CDF puts easy-to-author interactivity at its core, empowering readers to drive content and generate results live.

Launched by the Wolfram Group, the CDF standard is a computation-powered knowledge container—as everyday as a document, but as interactive as an app.

Adopting CDF gives ideas a broad communication pipeline—accelerating research, education, technical development, and progress.

See how CDFs transform: