Blender - Blender is the open source, cross platform suite of tools for 3D creation.
VOCALOID - VOCALOID is a singing synthesizer.
Unreal Engine - Unreal Engine 4 is a suite of integrated tools for game developers to design and build games, simulations, and visualizations.
DeepVocal - DeepVocal is a free to use singing synthesizer application software developed by Boxstar.
Unity - The multiplatform game creation tools for everyone.
Synthesizer V - Synthesizer V: at the Forefront of Singing Synth