Keynote is described as «Easily create gorgeous presentations with Keynote, featuring powerful yet easy-to-use tools and dazzling effects that will make you a very hard act to follow» and is a very popular presentation maker in the office & productivity category. There are more than 50 alternatives to Keynote for a variety of platforms, including Windows, Online / Web-based, Mac, iPhone and Linux. The best alternative is LibreOffice — Impress, which is both free and Open Source. Other great apps like Keynote are Google Slides, Microsoft Powerpoint, Prezi and Sozi.Keynote alternatives are mainly Presentation Makers but may also be Slideshow Makers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Keynote.