Create stunning presentations with Zoho's Show 3.0. The tool has what it takes to create and deliver attractive presentations while there's no need to carry with you any removable media, you just need an Internet connection – deliver presentations on the go. You can import presentations from different formats such as, PPTX and collaborate with remote users modifying the same presentation. It could be easily used as a backup means in case your local presentation goes haywire!
Try for yourself Zoho's tool here.