What is the best software for creating sales presentations?

Microsoft Power Point

there are many presentation software to use to make a sale presentation, usually called power point alternatives, and here are the top5;

1. Pow toon.
2. Prezi.
3. Key note.
4. prezentit.
5. slide rocket.

but if you really asking about the best way to create a sale presntation with any software, i would recommend that you use a cartoon presetation where you transform your words to cartoon drawing that makes it easier and more intresting for the customer to watch.