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Symfony is a PHP web application framework and a set of reusable PHP components/libraries. Symfony was published as free software on October 18, 2005 and released under the MIT license.
The Symfony PHP framework
In-browser markdown editor
Modern, Crazy Fast, Ridiculously Easy and Amazingly Powerful Flat-File CMS
Bolt is a simple CMS written in PHP. It is based on Silex and Symfony components, uses Twig and either SQLite, MySQL or PostgreSQL.
eCommerce PHP framework built on top of Symfony with component-based architecture and format-agnostic rendering. (HTML/JSON/XML)
wallabag is a self hostable application for saving web pages.
Drush is a command-line shell and scripting interface for Drupal, a veritable Swiss Army knife designed to make life easier for those who spend their working hours hacking away at the command prompt.
The "Symfony Standard Edition" distribution
The Symfony documentation
Symfony Demo Application
Elasticsearch PHP integration for your Symfony2 project using Elastica