TimelineJS is an open-source tool that enables you to build visually-rich interactive timelines from different sources. Creating one is as easy as filling in a Google spreadsheet or as detailed as JSON.

Sources

It can pull in media from different sources and has built in support for: Twitter, Flickr, Google Maps, YouTube, Vimeo, Vine, Dailymotion, Wikipedia, SoundCloud and more media types are added regularly.

Tips & tricks

1. Keep it short, and write each event as a part of a larger narrative.
2. Pick stories that have a strong chronological narrative. It does not work well for stories that need to jump around in the timeline.
3. Include events that build up to major occurrences.Not just the major events.