Many teachers have been using HSTRY, a free web-based, timeline tool. HSTRY has recently been re-branded as Sutori. Sutori is an easy way for students to create and share digital stories by expanding the timeline capabilities of HSTRY. Check out Sutori as a storytelling presentation tool that will engage your students whether writing a virtual essay, play or research report!
I highly recommend that you check out Sutori and if you are a former HSTRY user, you can read all about the changes on their blog post.