Animations
Animator – create unlimited 2 minute animations for free. Drag and drop, easy to use. You can also upload your own characters.
Mysimpleshow – free for limited function but still fab – fill in the storyboard template, edit the visualisations (upload your own images if you want), and Mysimpleshow will produce a (robotically) narrated animation complete with sweeping hand transition. The novelty of the presentation type will wear off quickly but fantastic for limited use. Or upgrade for more choice.
Moovly – Online video animation software, with a limited free option (100MB storage)
Videoscribe – Create up to 5 videos free, then a month by month subscription.