PRADO is described as 'component-based and event-driven framework for Web application development in PHP 5. PRADO stands for PHP Rapid Application Development Object-oriented' and is an app in the Development category. There are eight alternatives to PRADO for a variety of platforms, including Mac, Windows, Linux, Online / Web-based and Self-Hosted solutions. The best alternative is Symfony, which is both free and Open Source. Other great apps like PRADO are CodeIgniter (Free, Open Source), CakePHP (Free, Open Source), Nette Framework (Free, Open Source) and Yii Framework (Free, Open Source).
Nette Framework is a popular tool for PHP web development. It is designed to be the most usable as possible and is definitely one of the safest one. It speaks your language and helps you to easily build better websites.
Extending the art & spirit of PHP, Zend Framework is based on simplicity, object-oriented best practices, corporate friendly licensing, and a rigorously tested agile codebase. Zend Framework is focused on building more secure, reliable, and modern Web 2.
Port of Ruby on Rails development framework and designed to work for PHP4 and PHP5. The Akelos PHP Framework is a web application development platform based on the MVC (Model View Controller) design pattern.