Timeline JS is an open-source tool that enables anyone to build visually rich, interactive timelines. Beginners can create a timeline using nothing more than their Google spreadsheet template. Experts can use their JSON skills to create custom installations while keeping TimelineJS's core functionality.
Tiki-Toki is an online timeline maker software for creating beautiful interactive timelines that can be shared on the web.
Time Graphics is a free online timeline maker that is integrated with Google services for visualizing information.
Timetoast is a place to make timelines on the web.