From The Alliance for Networking Visual Culture*
Scalar is a free, open source authoring and publishing platform that’s designed to make it easy for authors to write long-form, born-digital scholarship online. Scalar enables users to assemble media from multiple sources and juxtapose them with their own writing in a variety of ways, with minimal technical expertise required. Multiple authorship is supported.
Watching the Scalar video introduction will make you want to drop everything and start writing!
VIDEO INTRODUCTION: http://scalar.usc.edu/scalar/
*Scalar is a project of the Alliance for Networking Visual Culture (ANVC) in association with Vectors and IML, and with the support of the Andrew W. Mellon Foundation and the National Endowment for the Humanities.