PresentationTube
"The presentation recorder integrates a variety of visual aids and synchronizes presenter's video, PowerPoint slides, drawing board, and whiteboard. With the drawing board, presenters can draw lines, curves, graphs, and shapes on the screen to emphasize or clarify their ideas, so the demonstration can be clearer. The whiteboard allows the presenter to type text using the keyboard making it an ideal tool to add more details, or explain equations using words, numbers, and symbols. An uploaded video presentation employs scrollable slide thumbnail allowing the audience to move to the respective video content and control both the time and progress of video. A video presentation also allows interactivity via Facebook comments and self-assessment quizzes, allowing the audience to be heard and involved."-(site)
Registration with PresentationTube, downloading the recorder, and uploading your video presentations are free for academic purposes only, with no ads, no banners, and no limitations in recording time, storage space, or delivery bandwidth. Using PresentationTube for commercial or other purposes by individuals, universities, institutions, associations, or governments is considered as commercial use and requires payment.