Spine is described as 'Is 2D animation software designed specifically for software and game development. Animators, artists and programmers unite to bring your games alive' and is a Animation Maker in the development category. There are more than 10 alternatives to Spine for a variety of platforms, including Windows, Mac, Linux, Web-based and Flathub apps. The best Spine alternative is Synfig Studio, which is both free and Open Source. Other great apps like Spine are Inochi Creator, enve, Expressive Animator and AnimeEffects.