When comparing GSAP vs Famous, the Slant community recommends GSAP for most people. In the question“What are the best JavaScript animation frameworks or libraries?” GSAP is ranked 1st while Famous is ranked 5th. The most important reason people chose GSAP is:
It's been around a long time, from back in Flash days.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Mature
It's been around a long time, from back in Flash days.
Pro Fast
It has always stressed performance.
Pro Lightweight
It's always stressed file size. There are different versions available to balance features and weight.
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.
Cons
Con Dead project
Famous has been abandoned and will not get updates or bug fixes anymore.