LibreOffice - Impress - Impress is a truly outstanding tool for creating effective multimedia presentations.
Pollen - Pollen is a publishing system that helps authors create beautiful and functional web-based books.
Keynote - Keynote for Mac, iOS, and iCloud lets you make dazzling presentations. Anyone can collaborate — even on a PC. And it’s compatible with Apple Pencil.
Tectonic typesetting - A modernized, complete, standalone TeX/LaTeX engine.
Google Slides - Create a new presentation and edit it with others at the same time — from your computer, phone or tablet. Free with a Google account.
SILE - SILE is a typesetting system inspired by TeX and InDesign, but seeks to be more flexible...