PDF Presenter is a presentation software with focus on PDF documents.

Why do you want PDF Presenter? It is easy to use and looks great. Show your slides to the audience through an external display or a projector. Navigate, annotate and keep track of your presentation on the separate lecturer interface. Creative? Add free space to your slides or use the whiteboard to draw and write. Built with both mouse and pen input in mind. Ideal for conventional and tablet computers. And best of all, it's free.