JavaScript - Lightweight, interpreted, object-oriented language with first-class functions
Spirit - The animation tool for the web.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
Marionette Studio - Marionette Studio is an online animation software for beginners and professionals. Animate 2D characters and environments in minutes with no prior skills.
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Lottie by Airbnb - Easily add high-quality animation to any native app