The best Animation Maker alternative to Unity is Candlestick, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Unity and four of them are Animation Makers so hopefully you can find a suitable replacement. Other interesting Animation Maker alternatives to Unity are Armory 3D, Verge3D and Alice.
Open-source editor runs in browser for making games, animations, and interactive content, offering vector drawing, timeline tools, asset import/export, JavaScript scripting, onion-skinning, plug-ins, and no installation or feature restrictions required.
Armory is an open-source 3D game engine with full Blender integration, turning it into a complete game development tool. The result is a unified workflow from start to finish, making you work faster. No more jumping between different applications.
Verge3D is a powerful and intuitive toolkit that allows Blender, 3ds Max or Maya users to create immersive web-based experiences. Verge3D can be used to build interactive animations, product configurators, engaging presentations of any kind, online stores, explainers, e-learning...
Verge3D is much better fit for the Web than Unity and smoothly works in mobile browsers.
Verge3D comes with much better WebGL support.
Because on the website the description is that it makes web interactives, not games.
Alice is an innovative 3D programming environment that makes it easy to create an animation for telling a story, playing an interactive game, or a video to share on the web. Alice is a teaching tool for introductory computing.
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Fully integrated to last builds of Blender 3d, very powerful, and multiplatform ;