diff --git a/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md b/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
index 75b89f95e5b6a..54c94ff4279d7 100644
--- a/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
+++ b/src/Symfony/Bundle/FrameworkBundle/CHANGELOG.md
@@ -23,6 +23,7 @@ CHANGELOG
  * Deprecated `CachePoolClearerPass`. Use `Symfony\Component\Cache\DependencyInjection\CachePoolClearerPass` instead.
  * Deprecated `CachePoolPass`. Use `Symfony\Component\Cache\DependencyInjection\CachePoolPass` instead.
  * Deprecated `CachePoolPrunerPass`. Use `Symfony\Component\Cache\DependencyInjection\CachePoolPrunerPass` instead.
+ * Added `debug:autoconfiguration` command to display the autoconfiguration of interfaces/classes 
 
 4.1.0
 -----
diff --git a/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutoconfigurationCommand.php b/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutoconfigurationCommand.php
new file mode 100644
index 0000000000000..fb620cc255310
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Command/DebugAutoconfigurationCommand.php
@@ -0,0 +1,171 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\FrameworkBundle\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\DependencyInjection\ChildDefinition;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Dumper\YamlDumper;
+use Symfony\Component\VarDumper\Cloner\VarCloner;
+use Symfony\Component\VarDumper\Dumper\AbstractDumper;
+use Symfony\Component\VarDumper\Dumper\CliDumper;
+
+/**
+ * A console command for autoconfiguration information.
+ *
+ * @internal
+ */
+class DebugAutoconfigurationCommand extends Command
+{
+    protected static $defaultName = 'debug:autoconfiguration';
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setDefinition(array(
+                new InputArgument('search', InputArgument::OPTIONAL, 'A search filter'),
+                new InputOption('tags', null, InputOption::VALUE_NONE, 'Displays autoconfiguration interfaces/class grouped by tags'),
+            ))
+            ->setDescription('Displays current autoconfiguration for an application')
+            ->setHelp(<<<'EOF'
+The <info>%command.name%</info> command displays all services that
+are autoconfigured:
+
+  <info>php %command.full_name%</info>
+
+You can also pass a search term to filter the list:
+
+  <info>php %command.full_name% log</info>
+
+EOF
+            )
+        ;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $io = new SymfonyStyle($input, $output);
+        $errorIo = $io->getErrorStyle();
+
+        $autoconfiguredInstanceofItems = $this->getContainerBuilder()->getAutoconfiguredInstanceof();
+
+        if ($search = $input->getArgument('search')) {
+            $autoconfiguredInstanceofItems = array_filter($autoconfiguredInstanceofItems, function ($key) use ($search) {
+                return false !== stripos(str_replace('\\', '', $key), $search);
+            }, ARRAY_FILTER_USE_KEY);
+
+            if (empty($autoconfiguredInstanceofItems)) {
+                $errorIo->error(sprintf('No autoconfiguration interface/class found matching "%s"', $search));
+
+                return 1;
+            }
+        }
+
+        ksort($autoconfiguredInstanceofItems, SORT_NATURAL);
+
+        $io->title('Autoconfiguration');
+        if ($search) {
+            $io->text(sprintf('(only showing classes/interfaces matching <comment>%s</comment>)', $search));
+        }
+        $io->newLine();
+
+        /** @var ChildDefinition $autoconfiguredInstanceofItem */
+        foreach ($autoconfiguredInstanceofItems as $key => $autoconfiguredInstanceofItem) {
+            $tableRows = array();
+
+            foreach ($autoconfiguredInstanceofItem->getTags() as $tag => $tagAttributes) {
+                $tableRows[] = array('Tag', $tag);
+                if ($tagAttributes !== array(array())) {
+                    $tableRows[] = array('Tag attribute', $this->dumpTagAttribute($tagAttributes));
+                }
+            }
+
+            if ($autoconfiguredInstanceofItem->getMethodCalls()) {
+                $tableRows[] = array('Method call', $this->dumpMethodCall($autoconfiguredInstanceofItem));
+            }
+
+            if ($autoconfiguredInstanceofItem->getBindings()) {
+                $tableRows[] = array('Bindings', $this->dumpBindings($autoconfiguredInstanceofItem));
+            }
+
+            $io->writeln(sprintf("Autoconfiguration for \"%s\"\n==============================================", $key));
+            $io->newLine();
+            $io->table(array('Option', 'Value'), $tableRows);
+        }
+    }
+
+    private function dumpMethodCall(ChildDefinition $autoconfiguredInstanceofItem)
+    {
+        $tagContainerBuilder = new ContainerBuilder();
+        foreach ($tagContainerBuilder->getServiceIds() as $serviceId) {
+            $tagContainerBuilder->removeDefinition($serviceId);
+            $tagContainerBuilder->removeAlias($serviceId);
+        }
+        $tagContainerBuilder->addDefinitions(array($autoconfiguredInstanceofItem));
+
+        $dumper = new YamlDumper($tagContainerBuilder);
+        preg_match('/calls\:\n((?: +- .+\n)+)/', $dumper->dump(), $matches);
+
+        return preg_replace('/^\s+/m', '', $matches[1]);
+    }
+
+    private function dumpBindings(ChildDefinition $autoconfiguredInstanceofItem)
+    {
+        $tagContainerBuilder = new ContainerBuilder();
+        foreach ($tagContainerBuilder->getServiceIds() as $serviceId) {
+            $tagContainerBuilder->removeDefinition($serviceId);
+            $tagContainerBuilder->removeAlias($serviceId);
+        }
+
+        $dumper = new YamlDumper($tagContainerBuilder);
+        foreach ($autoconfiguredInstanceofItem->getBindings() as $bindingKey => $bindingValue) {
+            $tagContainerBuilder->setParameter($bindingKey, $bindingValue->getValues()[0]);
+        }
+
+        preg_match('/parameters\:\n((?: + .+\n)+)/', $dumper->dump(), $matches);
+
+        return preg_replace('/^\s+/m', '', $matches[1]);
+    }
+
+    private function dumpTagAttribute(array $tagAttribute)
+    {
+        $cloner = new VarCloner();
+        $cliDumper = new CliDumper(null, null, AbstractDumper::DUMP_LIGHT_ARRAY);
+
+        return $cliDumper->dump($cloner->cloneVar(current($tagAttribute)), true);
+    }
+
+    /**
+     * @return ContainerBuilder
+     */
+    private function getContainerBuilder()
+    {
+        $kernel = $this->getApplication()->getKernel();
+        $buildContainer = \Closure::bind(function () { return $this->buildContainer(); }, $kernel, \get_class($kernel));
+        $container = $buildContainer();
+        $container->getCompilerPassConfig()->setRemovingPasses(array());
+        $container->compile();
+
+        return $container;
+    }
+}
diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index 2e64bff2c03d7..7e55f305ff0c6 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -336,7 +336,9 @@ public function load(array $configs, ContainerBuilder $container)
         $container->registerForAutoconfiguration(EventSubscriberInterface::class)
             ->addTag('kernel.event_subscriber');
         $container->registerForAutoconfiguration(ResetInterface::class)
-            ->addTag('kernel.reset', array('method' => 'reset'));
+            ->addTag('kernel.reset', array('method' => 'reset'))
+            ->addTag('kernel.reset2', array('method' => 'reset2'))
+        ;
 
         if (!interface_exists(MarshallerInterface::class)) {
             $container->registerForAutoconfiguration(ResettableInterface::class)
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/console.xml b/src/Symfony/Bundle/FrameworkBundle/Resources/config/console.xml
index 9553d4d60d7ce..8ec48cfa73506 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/console.xml
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/console.xml
@@ -60,6 +60,10 @@
             <tag name="console.command" command="debug:container" />
         </service>
 
+        <service id="console.command.debug_autoconfiguration" class="Symfony\Bundle\FrameworkBundle\Command\DebugAutoconfigurationCommand">
+            <tag name="console.command" command="debug:autoconfiguration" />
+        </service>
+
         <service id="console.command.debug_autowiring" class="Symfony\Bundle\FrameworkBundle\Command\DebugAutowiringCommand">
             <tag name="console.command" command="debug:autowiring" />
         </service>
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/Autoconfiguration/Bindings.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/Autoconfiguration/Bindings.php
new file mode 100644
index 0000000000000..903fad94f3309
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/Autoconfiguration/Bindings.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\Autoconfiguration;
+
+class Bindings
+{
+    private $paramOne;
+    private $paramTwo;
+
+    public function __construct($paramOne, $paramTwo)
+    {
+        $this->paramOne = $paramOne;
+        $this->paramTwo = $paramTwo;
+    }
+}
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/Autoconfiguration/MethodCalls.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/Autoconfiguration/MethodCalls.php
new file mode 100644
index 0000000000000..52c78d1d77be8
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/Autoconfiguration/MethodCalls.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\Autoconfiguration;
+
+class MethodCalls
+{
+    public function setMethodCallOne()
+    {
+    }
+
+    public function setMethodCallTwo()
+    {
+    }
+}
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/Autoconfiguration/TagsAttributes.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/Autoconfiguration/TagsAttributes.php
new file mode 100644
index 0000000000000..785d03e806414
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/Autoconfiguration/TagsAttributes.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\Autoconfiguration;
+
+class TagsAttributes
+{
+}
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/DebugAutoconfigurationBundle.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/DebugAutoconfigurationBundle.php
new file mode 100644
index 0000000000000..19062a3a7557b
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/DebugAutoconfigurationBundle.php
@@ -0,0 +1,9 @@
+<?php
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle;
+
+use Symfony\Component\HttpKernel\Bundle\Bundle;
+
+class DebugAutoconfigurationBundle extends Bundle
+{
+}
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/DependencyInjection/DebugAutoconfigurationExtension.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/DependencyInjection/DebugAutoconfigurationExtension.php
new file mode 100644
index 0000000000000..35c1e105cc0c2
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/Bundle/DebugAutoconfigurationBundle/DependencyInjection/DebugAutoconfigurationExtension.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\DependencyInjection;
+
+use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\Autoconfiguration\Bindings;
+use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\Autoconfiguration\MethodCalls;
+use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\Autoconfiguration\TagsAttributes;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\Extension\Extension;
+use Symfony\Component\DependencyInjection\Reference;
+
+class DebugAutoconfigurationExtension extends Extension
+{
+    public function load(array $configs, ContainerBuilder $container)
+    {
+        $container->registerForAutoconfiguration(MethodCalls::class)
+            ->addMethodCall('setMethodOne', array(new Reference('logger')))
+            ->addMethodCall('setMethodTwo', array(array('paramOne', 'paramOne')));
+
+        $container->registerForAutoconfiguration(Bindings::class)
+            ->setBindings(array(
+                '$paramOne' => new Reference('logger'),
+                '$paramTwo' => 'binding test',
+            ));
+
+        $container->registerForAutoconfiguration(TagsAttributes::class)
+            ->addTag('debugautoconfiguration.tag1', array('method' => 'debug'))
+            ->addTag('debugautoconfiguration.tag2', array('test'))
+        ;
+    }
+}
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutoconfigurationCommandTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutoconfigurationCommandTest.php
new file mode 100644
index 0000000000000..504200effb4f3
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/DebugAutoconfigurationCommandTest.php
@@ -0,0 +1,145 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Functional;
+
+use Symfony\Bundle\FrameworkBundle\Console\Application;
+use Symfony\Component\Console\Tester\ApplicationTester;
+
+/**
+ * @group functional
+ */
+class DebugAutoconfigurationCommandTest extends WebTestCase
+{
+    public function testBasicFunctionality()
+    {
+        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+
+        $application = new Application(static::$kernel);
+        $application->setAutoExit(false);
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'debug:autoconfiguration'));
+
+        $expectedOutput = <<<EOD
+Autoconfiguration for "Symfony\Component\Console\Command\Command"
+==============================================
+
+ -------- ----------------- 
+  Option   Value            
+ -------- ----------------- 
+  Tag      console.command  
+ -------- -----------------
+EOD;
+        $this->assertContains($expectedOutput, $tester->getDisplay(true));
+    }
+
+    public function testSearchArgument()
+    {
+        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+
+        $application = new Application(static::$kernel);
+        $application->setAutoExit(false);
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'debug:autoconfiguration', 'search' => 'logger'));
+
+        $this->assertContains('Psr\Log\LoggerAwareInterface', $tester->getDisplay(true));
+        $this->assertNotContains('Sensio\Bundle\FrameworkExtraBundle', $tester->getDisplay(true));
+    }
+
+    public function testAutoconfigurationWithMethodCalls()
+    {
+        static::bootKernel(array('test_case' => 'DebugAutoconfiguration', 'root_config' => 'config.yml'));
+
+        $application = new Application(static::$kernel);
+        $application->setAutoExit(false);
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'debug:autoconfiguration', 'search' => 'MethodCalls'));
+
+        $this->assertContains('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\Autoconfiguration\MethodCalls', $tester->getDisplay(true));
+        $expectedMethodCallOutput = <<<EOD
+  Method call   - [setMethodOne, ['@logger']]             
+                - [setMethodTwo, [[paramOne, paramOne]]]  
+EOD;
+        $this->assertContains($expectedMethodCallOutput, $tester->getDisplay(true));
+    }
+
+    public function testAutoconfigurationWithMultipleTagsAttributes()
+    {
+        static::bootKernel(array('test_case' => 'DebugAutoconfiguration', 'root_config' => 'config.yml'));
+
+        $application = new Application(static::$kernel);
+        $application->setAutoExit(false);
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'debug:autoconfiguration', 'search' => 'TagsAttributes'));
+
+        $this->assertContains('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\Autoconfiguration\TagsAttributes', $tester->getDisplay(true));
+        $expectedTagsAttributesOutput = <<<EOD
+  Tag             debugautoconfiguration.tag1  
+  Tag attribute   [                            
+                    "method" => "debug"        
+                  ]                            
+                                               
+  Tag             debugautoconfiguration.tag2  
+  Tag attribute   [                            
+                    "test"                     
+                  ]                            
+EOD;
+        $this->assertContains($expectedTagsAttributesOutput, $tester->getDisplay(true));
+    }
+
+    public function testAutoconfigurationWithBindings()
+    {
+        static::bootKernel(array('test_case' => 'DebugAutoconfiguration', 'root_config' => 'config.yml'));
+
+        $application = new Application(static::$kernel);
+        $application->setAutoExit(false);
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'debug:autoconfiguration', 'search' => 'Bindings'));
+
+        $this->assertContains('Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\Autoconfiguration\Bindings', $tester->getDisplay(true));
+        $expectedTagsAttributesOutput = <<<'EOD'
+  Bindings   $paramOne: '@logger'       
+             $paramTwo: 'binding test'
+EOD;
+        $this->assertContains($expectedTagsAttributesOutput, $tester->getDisplay(true));
+    }
+
+    public function testSearchIgnoreBackslashWhenFindingInterfaceOrClass()
+    {
+        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+
+        $application = new Application(static::$kernel);
+        $application->setAutoExit(false);
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'debug:autoconfiguration', 'search' => 'PsrLogLoggerAwareInterface'));
+        $this->assertContains('Psr\Log\LoggerAwareInterface', $tester->getDisplay(true));
+    }
+
+    public function testSearchNoResults()
+    {
+        static::bootKernel(array('test_case' => 'ContainerDebug', 'root_config' => 'config.yml'));
+
+        $application = new Application(static::$kernel);
+        $application->setAutoExit(false);
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'debug:autoconfiguration', 'search' => 'foo_fake'), array('capture_stderr_separately' => true));
+
+        $this->assertContains('No autoconfiguration interface/class found matching "foo_fake"', $tester->getErrorOutput());
+        $this->assertEquals(1, $tester->getStatusCode());
+    }
+}
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/DebugAutoconfiguration/bundles.php b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/DebugAutoconfiguration/bundles.php
new file mode 100644
index 0000000000000..3781e126e11de
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/DebugAutoconfiguration/bundles.php
@@ -0,0 +1,18 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Symfony\Bundle\FrameworkBundle\FrameworkBundle;
+use Symfony\Bundle\FrameworkBundle\Tests\Functional\Bundle\DebugAutoconfigurationBundle\DebugAutoconfigurationBundle;
+
+return array(
+    new FrameworkBundle(),
+    new DebugAutoconfigurationBundle(),
+);
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/DebugAutoconfiguration/config.yml b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/DebugAutoconfiguration/config.yml
new file mode 100644
index 0000000000000..f76eb28f92587
--- /dev/null
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/Functional/app/DebugAutoconfiguration/config.yml
@@ -0,0 +1,3 @@
+imports:
+- { resource: ../config/default.yml }
+