Prezi
If you have attended any of the NordAN General Assembly meetings recently, you have seen Prezi in action. Not at its best obviously, but still.
You probably already have a presentation software, so it might not give you any saving opportunity, but it could energise your presentations and help to stand out a bit more.
Prezi is "a visual storytelling software alternative to traditional slide-based presentation formats. Prezi presentations feature a map-like overview that lets users pan between topics, zoom in on details, and pull back to reveal context."
Prezi is easy and comfortable. You don´t have to bring it on a memory stick, you can just open it from any browser, and all you need is an internet connection. However, that shouldn't be a problem, it is 2018 after all. Also, if you make last minute changes to your presentation, you don´t have to send an updated version, the same link still works.
As with any program, it takes some time to get to used to it, but it´s worth it.
Oh, and stick to Prezi Classic. That´s free and to be honest, easier to use as well.