From the official page: "extraMUROS is an open-source HTML5 infrastructure built on public APIs that aims to fundamentally change the way people discover, curate and share digital collections of books, images, sounds, video and other media.
extraMUROS is a unique collaboration between the metaLAB (at) Harvard, Frances Loeb Library, the Harvard Library Lab and a network of journalists, designers and developers."
From the official video:
"extraMUROS is a groundbreaking project that aims to shape the Digital Library of America into a multimedia library without walls through an open-source HTML5 platform built on public APIs.
Extramuros strives to fundamentally transform how people:
c) Share digital collections.
Via Robin Good, Giuseppe Mauriello