The leading PHP framework to create websites and web applications. Built on top of the Symfony Components.
Use certain pieces of Symfony's software building blocks (dependency injector, translations management, forms management, etc.) without necessarily using all of the Symfony framework in its entirety. Allow yourself to build applications that precisely meets your needs!
The Symfony ecosystem has evolved with and around Symfony since its launch: the communities and many other service companies that have invested in the framework.
Developers working in Symfony can work both efficiently and effectively on the most complex aspects of a task. With the use of Best Practices, they can better guarantees the stability, maintainability, and upgradeability of Symfony applications you develop.
Symfony is everything that you would come to expect from a framework: speed, flexibility, reusable components, etc. Then there is the structure of what has been developed and the use of best practices.
Symfony is a set of prefabricated, rapidly integratable software components -- engineers have to write less commonly-used code, with less risk of error. This means greater productivity and focus on developing areas providing greater added value, managing guiding principles, and application-specific customizations.