
Description: TweenUI is an open-source user interface animation library for Unity. It allows developers to easily add fluid animations and transitions between UI elements in their Unity games and applications. Some key features include tweening, sequencing animations, animation callbacks, and custom easing.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: JavaScript Animator Express is a lightweight JavaScript animation library for easily creating 2D animations and interactive presentations. It has an intuitive timeline for keyframing animations, shape tweening, powerful easing, and exports to GIF.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API