- MooTools:
- MooTools is an object-oriented JavaScript framework that is still somewhat widely used throughout the internet. It is the JavaScript library that Joomla has used since its inception. The name is taken from an acronym: My Object-Oriented Tools.
Using a JavaScript library such as MooTools allows developers to rapidly create extensions and update code, while reusing trustworthy pieces of code over and over. This saves time and is generally thought to greatly reduce errors and security problems.

