Aeon Timeline - "The timeline tool for creative thinking. Capture, create and explore ideas."
Slidebean - Presentations that design themselves
Preceden - Preceden makes it easy to build simple, powerful timelines
Deckset - Turn your notes into beautiful presentations
Timeline - Timeline is a cross-platform application for displaying and navigating events on a timeline.
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.