Ranked in these QuestionsQuestion Ranking
Pro Feature rich
Pro Fallback canvas rendering
Three.js offers a canvas renderer as a fallback when WebGL is not available.
Pro 3D physics engine
Famous offers a 3D engine through via WebGL. This engine is very similar to those found in videogame engines.
Pro Amazing performance
Famous makes it possible to create animations through DOM and WebGL that are up to 60FPS. In other words, the Famous engine is able to create native animations inside the web browser.
Pro Open Source
Famous is a free and open source project released under the MIT License.
Pro SEO friendly
Since Famous renders on DOM (as well as WebGL) it's SEO friendly, because web crawlers can read everything that's rendered on the DOM.
Con Poor garbage collection
Memory is quite slow to free up with three.js, causing issues with the performance of the project.
Con Difficult to get help
Without a three.js forum, it can be difficult to find answers to your questions.
Con Bad documentation
Many features are not documented or documentation is often outdated.
Con Weak visual tools
Visual tools do not support a lot of engine features and is weakly developed.
Con Dead project
Famous has been abandoned and will not get updates or bug fixes anymore.