Get Doctrine stats : managed entities, lazy loaded entities, hydration time etc.

steevanb/doctrine-stats

View Symfony Container instantiated services, public / private services etc.

steevanb/symfony-container-introspection

Show nice equivalent to debug_backtrace(), with caller, code preview etc.

steevanb/php-backtrace

View Composer autoload informations: included files, autoloaded classes etc.

huttopia/composer-autoload-infos