Symfony : Symfony is a set of reusable PHP components and a PHP framework for web projects.
Clearbricks : No, Clearbricks is not yet another framework. Clearbricks is not cool at all and does not even have a nice website. It won't make you smart neither ha...
Flow : Flow is a PHP web application framework focussed on Domain-Driven Design and clean code.
Mautic : Mautic is marketing automation software (email, social & more). Social Media Marketing, Contact Management, Email Marketing, Forms, Campaigns, Reports
Silex : The PHP micro-framework based on Symfony2 Components
Elgg is an award-winning social networking engine, delivering the building blocks that enable businesses, schools, universities and associations to create their own fully-featured social networks and applications.