Diigo
Social Annotation: Seamless Integration of Social Bookmarking, Web Highlighter, Sticky-Note & Clipping; Killer features for finding, managing and sharing online information. A powerful personal tool and a rich social platform.
Presentation Software | Online Presentation Tools | Prezi
Welcome to Prezi, the presentation software that uses motion, zoom, and spatial relationships to bring your ideas to life and make you a great presenter.