Blender is a free 3-D software that lets you create whatever model you want. Its difficulty is based on how well you know the hot keys. I like to use this program a lot with Garry's Mod to see how well I can make body armor or some kind of car part. I spend most of my time learning more about blender and what I can do with it.
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If you want to export your gmax files, gmax only allows P3D files for exporting. There are no converters for this file format. So what if you are learning 3D modeling or animation on gmax, and want to use the pro version 3ds Max? (It used to be called 3D Studio Max.) All your work, at least your 3D meshes, can be exported to 3ds Max, or any 3D modeling software program that accepts the OBJ file format, like Blender 3D.
Toon Boom Snimate Pro is like Flash but add more and make everything easier to do. animate pro has 3d environment changed and even lip synch capabilities. ToonBoom was voted #1 best animation software of 2013