The VarDumper component provides mechanisms for walking through any arbitrary PHP variable. It provides a better dump() function that you can use instead of var_dump().
The VarExporter component allows exporting any serializable PHP data structure to plain PHP code. While doing so, it preserves all the semantics associated with the serialization mechanism of PHP (__wakeup, __sleep, Serializable).
The OptionsResolver component is array_replace() on steroids. It allows you to create an options system with required options, defaults, validation (type, value), normalization and more.
WebServerBundle provides commands for running applications using the PHP built-in web server. It simplifies your local development setup because you don't have to configure a proper web server such as Apache or Nginx to run your application.
The EventDispatcher component provides tools that allow your application components to communicate with each other by dispatching events and listening to them.
Run multiple websites using the same Laravel installation while keeping tenant specific data separated for fully independent multi-domain setups, previously github.com/hyn/multi-tenant