Ubiquitous Presenter (UP) is an outgrowth of University of Washington's Classroom Presenter (CP), a program that uses Tablet PC ink to allow instructors to annotate pre-prepared slides and students to create submissions for in-class activities. UP extends this functionality by taking many of CP's features onto the web. Ubiquitous Presenter was developed at UCSD, but is free for anyone to use. Just click the appropriate link under "Sign up as" to get started, or
learn more about UP.