Tiki-Toki is online software for creating interactive timelines. Timelines can include images and videos (from YouTube or Vimeo) and can be authored by groups of people and shared on the Web. A 3D mode enables a visually impressive view of your timeline.
TimeMapper, an open-source project of Open Knowledge Foundation Labs, is an online platform that combines timelines and maps.
TimelineJS is an online tool for creating media-rich, interactive timelines. Developed by the Knight Lab at Northwestern University, the tool allows users to compose a sequence of dates, text, images, audio, video, and links to create a multimedia timeline.