Agile UI is a stand-alone framework that implements all the necessary components to build fully-featured and interractive user interface for your PHP application. Developed by Agile Technologies
License: Open Source
Agile Toolkit is a lightweight and flexible framework focused on rapid application development, making it ideal for small to medium-sized applications. In contrast, Yii Framework is a more robust and feature-rich framework suited for large-scale applications, offering extensive documentation and community support.