Tiki Toki is a visually impressive application that uses text and images. You can have more than one timeline on the same page and collaborate with different people on the same timeline. This example uses Tiki Toki to show the history of democracy in the Middle East.
Timeglider doesn’t use images but lets you build more complex timelines, including more detail, references and events with different levels of importance based on text size . You can zoom in to see events as they happened hour by hour or zoom out to see centuries pass by. Here is an example of a Timeglider timeline created on World War I.
Timetoast is simply designed but does have the advantage of offering a dynamic layout or a plain text version that appears in a table, offering students a different way to view their work. Here is a Timetoast example showing the history of atomic structure.