Live2D Cubism is described as 'Live2D is the world's first drawing technology to enable 3D rendering of 2D images. This technology supports a variety of portable consoles and smartphones, and Live2D is already being utilized for games that take advantage of the unique characteristics of hand drawn artwork' and is an app in the Photos & Graphics category. There are more than 10 alternatives to Live2D Cubism for Windows, Mac, Linux, Online / Web-based and Chrome OS. The best alternative is Synfig Studio, which is both free and Open Source. Other great apps like Live2D Cubism are enve (Free, Open Source), AnimeEffects (Free, Open Source), DragonBones (Free, Open Source) and Expressive Animator (Free).
Synfig is a free and open-source, industrial-strength, vector-based 2D animation app designed for producing feature-film animations. It eliminates the need to create animations frame by frame. It is available for Windows, Linux, and macOS.
Most users think Synfig Studio is a great alternative to Live2D Cubism.
E-mote is an engine which can create smooth and stereoscopic animation in a few steps from the character's 2D illustration. You can easily and dynamically move the expressions, orientations, limbs of standing pictures characters and make it look 3D.