diff --git a/bin/developer b/bin/developer
index 5e33b84c54..496de563be 100755
--- a/bin/developer
+++ b/bin/developer
@@ -10,11 +10,13 @@
  */
 
 use Alchemy\Phrasea\CLI;
-use Alchemy\Phrasea\Core\Version;
-use Alchemy\Phrasea\Command\Developer\RegenerateSqliteDb;
-use Alchemy\Phrasea\Command\Developer\RoutesDumper;
 use Alchemy\Phrasea\Command\Developer\APIRoutesDumper;
 use Alchemy\Phrasea\Command\Developer\Behat;
+use Alchemy\Phrasea\Command\Developer\JavascriptBuilder;
+use Alchemy\Phrasea\Command\Developer\LessCompiler;
+use Alchemy\Phrasea\Command\Developer\RegenerateSqliteDb;
+use Alchemy\Phrasea\Command\Developer\RoutesDumper;
+use Alchemy\Phrasea\Core\Version;
 
 use Doctrine\DBAL\Tools\Console\Helper\ConnectionHelper;
 use Doctrine\ORM\Tools\Console\Helper\EntityManagerHelper;
@@ -66,6 +68,8 @@ try {
     $cli->command(new APIRoutesDumper());
     $cli->command(new RoutesDumper());
     $cli->command(new Behat());
+    $cli->command(new LessCompiler());
+    $cli->command(new JavascriptBuilder());
 
     $cli['console']->addCommands(array(
         // DBAL Commands
diff --git a/bin/setup b/bin/setup
index 8ed77ab5b8..0bb44c9508 100755
--- a/bin/setup
+++ b/bin/setup
@@ -19,8 +19,6 @@ namespace KonsoleKommander;
 use Alchemy\Phrasea\Core\Version;
 use Alchemy\Phrasea\Command\UpgradeDBDatas;
 use Alchemy\Phrasea\Command\Setup\Install;
-use Alchemy\Phrasea\Command\Setup\LessCompiler;
-use Alchemy\Phrasea\Command\Setup\JavascriptBuilder;
 use Alchemy\Phrasea\CLI;
 use Alchemy\Phrasea\Command\Setup\CheckEnvironment;
 
@@ -64,8 +62,6 @@ try {
 
     $app->command(new CheckEnvironment('check:system'));
     $app->command(new Install('system:install'));
-    $app->command(new LessCompiler());
-    $app->command(new JavascriptBuilder());
 
     $result_code = is_int($app->run()) ? : 1;
 } catch (\Exception $e) {
diff --git a/lib/Alchemy/Phrasea/Command/Developer/JavascriptBuilder.php b/lib/Alchemy/Phrasea/Command/Developer/JavascriptBuilder.php
new file mode 100644
index 0000000000..a51dd62197
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Command/Developer/JavascriptBuilder.php
@@ -0,0 +1,99 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2013 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Command\Developer;
+
+use Alchemy\Phrasea\Command\Command;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Process\ProcessBuilder;
+use Alchemy\Phrasea\Exception\RuntimeException;
+
+/**
+ * This command builds less file
+ */
+class JavascriptBuilder extends Command
+{
+    public function __construct()
+    {
+        parent::__construct('assets:build-javascript');
+
+        $this->setDescription('Compile less files');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doExecute(InputInterface $input, OutputInterface $output)
+    {
+        $files = array(
+            $this->container['root.path'] . '/www/skins/build/bootstrap/js/bootstrap.js' => array(
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-transition.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-alert.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-button.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-carousel.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-collapse.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-dropdown.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-modal.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-tooltip.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-popover.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-scrollspy.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-tab.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-typeahead.js',
+                $this->container['root.path'] . '/www/assets/bootstrap/js/bootstrap-affix.js',
+            )
+        );
+
+        foreach ($files as $target => $sources) {
+            $this->buildJavascript($input, $output, $target, $sources);
+
+            $minifiedTarget = substr($target, 0, -3) . '.min.js';
+            $this->buildMinifiedJavascript($input, $output, $minifiedTarget, $target);
+        }
+    }
+
+    private function buildJavascript(InputInterface $input, OutputInterface $output, $target, $sources)
+    {
+        $output->writeln("Building <info>".basename($target)."</info>");
+        $this->container['filesystem']->remove($target);
+
+        $process = ProcessBuilder::create(array_merge(array('cat'), $sources))->getProcess();
+        if ($input->getOption('verbose')) {
+            $output->writeln("Executing ".$process->getCommandLine()."\n");
+        }
+        $process->run();
+
+        if (!$process->isSuccessFul()) {
+            throw new RuntimeException(sprintf('Failed to generate %s', $target));
+        }
+
+        $this->container['filesystem']->mkdir(dirname($target));
+        file_put_contents($target, $process->getOutput());
+    }
+
+    private function buildMinifiedJavascript(InputInterface $input, OutputInterface $output, $target, $source)
+    {
+        $output->writeln("Building <info>".basename($target)."</info>");
+        $this->container['filesystem']->remove($target);
+
+        $process = ProcessBuilder::create(array('uglifyjs', $source, '-nc'))->getProcess();
+        if ($input->getOption('verbose')) {
+            $output->writeln("Executing ".$process->getCommandLine()."\n");
+        }
+        $process->run();
+
+        if (!$process->isSuccessFul()) {
+            throw new RuntimeException(sprintf('Failed to generate %s', $target));
+        }
+
+        file_put_contents($target, $process->getOutput());
+    }
+}
diff --git a/lib/Alchemy/Phrasea/Command/Developer/LessCompiler.php b/lib/Alchemy/Phrasea/Command/Developer/LessCompiler.php
new file mode 100644
index 0000000000..eb85155413
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Command/Developer/LessCompiler.php
@@ -0,0 +1,95 @@
+<?php
+
+/*
+ * This file is part of Phraseanet
+ *
+ * (c) 2005-2013 Alchemy
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Alchemy\Phrasea\Command\Developer;
+
+use Alchemy\Phrasea\Command\Command;
+use Alchemy\Phrasea\Exception\RuntimeException;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Process\ProcessBuilder;
+
+/**
+ * This command builds less file
+ */
+class LessCompiler extends Command
+{
+    public function __construct()
+    {
+        parent::__construct('assets:compile-less');
+
+        $this->setDescription('Compile less files');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doExecute(InputInterface $input, OutputInterface $output)
+    {
+        $files = array(
+            $this->container['root.path'] . '/www/skins/login/less/login.less' => $this->container['root.path'] . '/www/skins/build/login.css',
+            $this->container['root.path'] . '/www/skins/account/account.less' => $this->container['root.path'] . '/www/skins/build/account.css',
+            $this->container['root.path'] . '/www/assets/bootstrap/less/bootstrap.less' => $this->container['root.path'] . '/www/skins/build/bootstrap/css/bootstrap.css',
+            $this->container['root.path'] . '/www/assets/bootstrap/less/responsive.less' => $this->container['root.path'] . '/www/skins/build/bootstrap/css/bootstrap-responsive.css',
+        );
+
+        $output->writeln('Building Assets...');
+
+        $failures = 0;
+        $errors = array();
+        foreach ($files as $lessFile => $buildFile) {
+            $this->container['filesystem']->mkdir(dirname($buildFile));
+            $output->writeln(sprintf('Building %s', basename($lessFile)));
+
+            if (!is_file($lessFile)) {
+                throw new RuntimeException(realpath($lessFile) . ' does not exists.');
+            }
+
+            if (!is_writable(dirname($buildFile))) {
+                throw new RuntimeException(realpath(dirname($buildFile)) . ' is not writable.');
+            }
+
+            $builder = ProcessBuilder::create(array(
+                'recess',
+                '--compile',
+                $lessFile,
+            ));
+            $process = $builder->getProcess();
+            $process->run();
+
+            if (!$process->isSuccessful()) {
+                $failures++;
+                $errors[] = $process->getErrorOutput();
+            }
+            file_put_contents($buildFile, $process->getOutput());
+        }
+
+        $copies = array(
+            $this->container['root.path'] . '/www/assets/bootstrap/img/glyphicons-halflings-white.png' => $this->container['root.path'] . '/www/skins/build/bootstrap/img/glyphicons-halflings-white.png',
+            $this->container['root.path'] . '/www/assets/bootstrap/img/glyphicons-halflings.png' => $this->container['root.path'] . '/www/skins/build/bootstrap/img/glyphicons-halflings.png',
+        );
+
+        foreach ($copies as $source => $target) {
+            $this->container['filesystem']->mkdir(dirname($target));
+            $this->container['filesystem']->copy($source, $target);
+        }
+
+        if (0 === $failures) {
+            $output->writeln('<info>Build done !</info>');
+
+            return 0;
+        }
+
+        $output->writeln(sprintf('<error>%d errors occured during the build %s</error>', $failures, implode(', ', $errors)));
+
+        return 1;
+    }
+}