Simplified version of Keynote for Mac. Make slides and display them with a VGA adaptor from your iPad to projector, or on the iPad itself. Includes several themes, ability to view your presenter notes on the iPad, and swiping to advance slides. As well, Keynote can import and export Powerpoint files. $$$ for iOS only.
Project PDF documents and photos wirelessly from your iOS device to a browser connected on the same local network. Send PDF documents from Mail or Dropbox to Air Projector to present them. Export PDFs from PowerPoint or Keynote. $$
Share and annotate presentations, drawings, notes. PowerPoint presentations and PDF documents can be stored, downloaded to your Android or iOS device, and opened anywhere, even when your device is not connected to the Internet. Free.
Cloud-based presentation software that allows you to pinch, zoom, create mindmaps, insert images and video, and more to create visually stimulating slides. Use professional templates and auto-sync across devices. Free for iOS only.