1. Twigfiddletwigfiddle.com provides a small development environment to develop, run, store and access Twig code online.
2. Symfony QuickstartAn empty Symfony3 project that provides lots of ready-to-use tools for quick & not-so-dirty development
3. Symfony Collection[NOT MAINTAINED] A jQuery plugin that manages adding, deleting and moving elements from a Symfony form collection