On Imulus.com, there's brief look at two of the PHP frameworks available these days - CakePHP and PRADO.

I've recently found two open-source PHP development frameworks with great potential: CakePHP and PRADO.

He talks about the two of them, describing what they are and what the goals of the projects are. He hasn't tried them to compare them yet, but keep an eye out for future posts with more information.