As mentioned Muvizu is one of a kind within this field as it offered actual 3D scenes, characters, and props. You can also import your own 3D elements into a scene. Motion tracking is easy, 3D camera operation, lip-syncing, and many more features. You don't have to be an animator to build your first scene in minutes.
MotionDen - Free online animated video maker
Plotagon - This app, Plotagon. is very fun. Creative and lets me express my ideas and all of my desiors!
Animaker - Animaker is an online do-it-yourself (#DIY) animation video maker that brings studio quality presentations within everyone's reach. Animated Videos, Done Right!
MocapX - Facial Motion capture app Maya and iPhone. With the MocapX animator, you can easily use the iPhone camera to animate characters in real time directly in Maya. MocapX tools enable you to use any custom or production rig as well as any Maya feature.
Rocketium - A DIY video creation platform. Make videos in minutes using preset themes and templates.
FaceRig - FaceRig is a program that aims to enable anyone with a webcam to digitally embody awesome...