Hi Friends,in this post i like to introduce another free oepn source software.it is Blender.
Blender is the free open source 3D modeling Tool.it can create 3d models,animation also blander can use as animation creator .this video is created by using blender
you can find lots more blender tutorials from youtube and google.
you can download blender from link
blender is light weight 27 m and easy to use,blender not slowdown your computer