Godot Engine - Feature-packed 2D and 3D open source game engine.
Spirit - The animation tool for the web.
Unity - The multiplatform game creation tools for everyone.
Marionette Studio - Marionette Studio is an online animation software for beginners and professionals. Animate 2D characters and environments in minutes with no prior skills.
GDevelop - GDevelop is an open-source game making software designed to be used by everyone.
Lottie by Airbnb - Easily add high-quality animation to any native app