An Ipe presentation is an Ipe PDF document that is presented using, for instance, Acrobat Reader and a video projector. Ipe has a number of features that make it easier to make such presentations.
The Windows and Linux versions of Ipe come with the presentation tool IpePresenter. It shows the current slide in one window (which you can make full screen on the external display), while showing the current slide, the next slide, notes for the current page, as well as a timer on your own display. IpePresenter not only works for Ipe presentations, but also for presentations made with beamer. It easily fits on and runs from a USB-stick, and does not require Latex on the computer where you give the presentation.