Web Apps, Widgets, and Other Free Wonders of the World
Kahoot- awesome interactive review and quiz game; use others' content or make your own
Coggle- a nice mind mapping website
Thinglink- created images with hotspots to embed text, link, video, and more
Tackk.com- the page you are using right now- a no-nonsense webpage/poster maker
Weebly.com- a feature-rich website builder
Tapestry- Make a tappable story in a variety of formats including slideshow, animated GIFs, and an animated text message conversation. See this example.
Docs Storybuilder- animated "Google Docs" story builder
Narrable- storytelling through images and narration. See this example.