Inkling Habitat lets publishers create interactive e-books with HD video, interactive features and 3D content in a free, cloud-based program. E-books can immediately be published to iPad and the Web in HTML5, with updates pushed to both platforms at once. (Well, iPad is available now and Web publishing will be added later this year.) Multiple groups can collaborate on the content simultaneously, so a production editor in New York City can look at the same project as a designer in India, simultaneously. Every version of a product is saved, so changes can always be rolled back. (via Free Interactive E-Book Publishing Platform — From Inkling, Not Apple — paidContent)