Creature
Spine
Synfig Studio
Unity 2D
Spriter Pro by BrashMonkey
Blender
CrazyTalk Animator
Animation Paper
JavaScript
Python
Java
PHP
Rust
Haskell
Typescript
Elixir
CreatureSpine - Spine is 2D animation software designed specifically for software and game development.
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
Synfig Studio - Just another WordPress site
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
Unity 2D - Unity 2D is a powerful and feature-rich game design solution built from the ground up to fulfill every basic and advanced need of the developer.
PHP - A popular general-purpose scripting language that is especially suited to web development