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Unity - The multiplatform game creation tools for everyone.
CrazyTalk Animator - CrazyTalk Animator, the next level of 2D animation. Create actors using any photo or illustration.
Godot Engine - Feature-packed 2D and 3D open source game engine.
DigiCel FlipBook - Whether you do 2D, 3D or stop motion Animation, DigiCel FlipBook makes animation easier!
Blender - Blender is the open source, cross platform suite of tools for 3D creation.