Performance tools
Doctrine stats
Get Doctrine stats : managed entities, lazy loaded entities, hydration time etc.
steevanb/doctrine-stats
Symfony container introspection
View Symfony Container instantiated services, public / private services etc.
steevanb/symfony-container-introspection
PHP backtrace
Show nice equivalent to debug_backtrace(), with caller, code preview etc.
steevanb/php-backtrace
Composer autoload infos
View Composer autoload informations: included files, autoloaded classes etc.
huttopia/composer-autoload-infos