LaTeX Beamer and Prosper - LaTeX is a high-quality typesetting system; it includes features designed for the production of technical and scientific documentation.
Slides - Slides is a place for creating, presenting and sharing presentations. The Slides editor is available right in your browser. Unlike traditional presentation software, like PowerPoint, there's no need to download anything.
Microsoft PowerPoint - Microsoft PowerPoint empowers you to create clean slideshow presentations and intricate pitch decks and gives you a powerful presentation maker to tell your story.
Slidebean - Presentations that design themselves
Apache OpenOffice Impress - Impress, part of the https://alternativeto.
Tome - Tome is a tool for creating stories at work—whether it's about strategy, design, data, or a personal message.