diff --git a/src/Console/Server.php b/src/Console/Server.php
index c5a8d6b4d..a65ef9b28 100644
--- a/src/Console/Server.php
+++ b/src/Console/Server.php
@@ -12,74 +12,37 @@
 namespace Flarum\Console;
 
 use Flarum\Console\Event\Configuring;
-use Flarum\Database\Console\GenerateMigrationCommand;
-use Flarum\Database\Console\MigrateCommand;
-use Flarum\Database\Console\ResetCommand;
 use Flarum\Foundation\Application;
-use Flarum\Foundation\Console\CacheClearCommand;
-use Flarum\Foundation\Console\InfoCommand;
-use Flarum\Foundation\Site;
-use Flarum\Install\Console\InstallCommand;
-use Flarum\Install\InstallServiceProvider;
 use Illuminate\Contracts\Events\Dispatcher;
 use Symfony\Component\Console\Application as ConsoleApplication;
 
 class Server
 {
-    /**
-     * @param Site $site
-     * @return Server
-     */
-    public static function fromSite(Site $site)
-    {
-        return new static($site->boot());
-    }
+    protected $commands;
 
-    public function __construct(Application $app)
+    public function __construct(array $commands)
     {
-        $this->app = $app;
+        $this->commands = $commands;
     }
 
     public function listen()
     {
-        $console = $this->getConsoleApplication();
+        $console = new ConsoleApplication('Flarum', Application::VERSION);
+
+        foreach ($this->commands as $command) {
+            $console->add($command);
+        }
+
+        $this->extend($console);
 
         exit($console->run());
     }
 
-    /**
-     * @return ConsoleApplication
-     */
-    protected function getConsoleApplication()
+    private function extend(ConsoleApplication $console)
     {
-        $console = new ConsoleApplication('Flarum', $this->app->version());
+        $app = Application::getInstance();
 
-        $this->app->register(InstallServiceProvider::class);
-
-        $commands = [
-            InstallCommand::class,
-            MigrateCommand::class,
-            ResetCommand::class,
-            GenerateMigrationCommand::class,
-        ];
-
-        if ($this->app->isInstalled()) {
-            $commands = array_merge($commands, [
-                InfoCommand::class,
-                CacheClearCommand::class
-            ]);
-        }
-
-        foreach ($commands as $command) {
-            $console->add($this->app->make(
-                $command,
-                ['config' => $this->app->isInstalled() ? $this->app->make('flarum.config') : []]
-            ));
-        }
-
-        $events = $this->app->make(Dispatcher::class);
-        $events->fire(new Configuring($this->app, $console));
-
-        return $console;
+        $events = $app->make(Dispatcher::class);
+        $events->fire(new Configuring($app, $console));
     }
 }
diff --git a/src/Foundation/AppInterface.php b/src/Foundation/AppInterface.php
new file mode 100644
index 000000000..927c7b42e
--- /dev/null
+++ b/src/Foundation/AppInterface.php
@@ -0,0 +1,25 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Foundation;
+
+interface AppInterface
+{
+    /**
+     * @return \Psr\Http\Server\RequestHandlerInterface
+     */
+    public function getRequestHandler();
+
+    /**
+     * @return \Symfony\Component\Console\Command\Command[]
+     */
+    public function getConsoleCommands();
+}
diff --git a/src/Foundation/InstalledApp.php b/src/Foundation/InstalledApp.php
new file mode 100644
index 000000000..1b0c574bb
--- /dev/null
+++ b/src/Foundation/InstalledApp.php
@@ -0,0 +1,132 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Foundation;
+
+use Flarum\Database\Console\GenerateMigrationCommand;
+use Flarum\Database\Console\MigrateCommand;
+use Flarum\Database\Console\ResetCommand;
+use Flarum\Foundation\Console\CacheClearCommand;
+use Flarum\Foundation\Console\InfoCommand;
+use Flarum\Http\Middleware\DispatchRoute;
+use Flarum\Settings\SettingsRepositoryInterface;
+use Zend\Diactoros\Response\HtmlResponse;
+use Zend\Stratigility\MiddlewarePipe;
+use function Zend\Stratigility\middleware;
+use function Zend\Stratigility\path;
+
+class InstalledApp implements AppInterface
+{
+    /**
+     * @var Application
+     */
+    protected $laravel;
+
+    /**
+     * @var array
+     */
+    protected $config;
+
+    public function __construct(Application $laravel, array $config)
+    {
+        $this->laravel = $laravel;
+        $this->config = $config;
+    }
+
+    /**
+     * @return \Psr\Http\Server\RequestHandlerInterface
+     */
+    public function getRequestHandler()
+    {
+        if ($this->inMaintenanceMode()) {
+            return $this->getMaintenanceMiddleware();
+        } elseif ($this->needsUpdate()) {
+            return $this->getUpdaterMiddleware();
+        }
+
+        $pipe = new MiddlewarePipe;
+
+        $pipe->pipe($this->subPath('api', 'flarum.api.middleware'));
+        $pipe->pipe($this->subPath('admin', 'flarum.admin.middleware'));
+        $pipe->pipe($this->subPath('', 'flarum.forum.middleware'));
+
+        return $pipe;
+    }
+
+    private function inMaintenanceMode(): bool
+    {
+        return $this->config['offline'] ?? false;
+    }
+
+    /**
+     * @return \Psr\Http\Server\RequestHandlerInterface
+     */
+    private function getMaintenanceMiddleware()
+    {
+        $pipe = new MiddlewarePipe;
+
+        $pipe->pipe(middleware(function () {
+            // FIXME: Fix path to 503.html
+            // TODO: FOR API render JSON-API error document for HTTP 503
+            return new HtmlResponse(
+                file_get_contents(__DIR__.'/../../503.html'), 503
+            );
+        }));
+
+        return $pipe;
+    }
+
+    private function needsUpdate(): bool
+    {
+        $settings = $this->laravel->make(SettingsRepositoryInterface::class);
+        $version = $settings->get('version');
+
+        return $version !== Application::VERSION;
+    }
+
+    /**
+     * @return \Psr\Http\Server\RequestHandlerInterface
+     */
+    public function getUpdaterMiddleware()
+    {
+        $pipe = new MiddlewarePipe;
+        $pipe->pipe(
+            $this->laravel->make(
+                DispatchRoute::class,
+                ['routes' => $this->laravel->make('flarum.update.routes')]
+            )
+        );
+
+        return $pipe;
+    }
+
+    private function subPath($pathName, $middlewareStack)
+    {
+        return path(
+            parse_url($this->laravel->url($pathName), PHP_URL_PATH) ?: '/',
+            $this->laravel->make($middlewareStack)
+        );
+    }
+
+    /**
+     * @return \Symfony\Component\Console\Command\Command[]
+     */
+    public function getConsoleCommands()
+    {
+        return [
+            $this->laravel->make(GenerateMigrationCommand::class),
+            $this->laravel->make(InfoCommand::class, ['config' => $this->config]),
+            $this->laravel->make(MigrateCommand::class),
+            $this->laravel->make(ResetCommand::class),
+            $this->laravel->make(CacheClearCommand::class),
+        ];
+    }
+}
diff --git a/src/Foundation/InstalledSite.php b/src/Foundation/InstalledSite.php
new file mode 100644
index 000000000..dd6740a30
--- /dev/null
+++ b/src/Foundation/InstalledSite.php
@@ -0,0 +1,221 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Foundation;
+
+use Flarum\Admin\AdminServiceProvider;
+use Flarum\Api\ApiServiceProvider;
+use Flarum\Bus\BusServiceProvider as BusProvider;
+use Flarum\Database\DatabaseServiceProvider;
+use Flarum\Database\MigrationServiceProvider;
+use Flarum\Discussion\DiscussionServiceProvider;
+use Flarum\Extension\ExtensionServiceProvider;
+use Flarum\Formatter\FormatterServiceProvider;
+use Flarum\Forum\ForumServiceProvider;
+use Flarum\Frontend\FrontendServiceProvider;
+use Flarum\Group\GroupServiceProvider;
+use Flarum\Locale\LocaleServiceProvider;
+use Flarum\Notification\NotificationServiceProvider;
+use Flarum\Post\PostServiceProvider;
+use Flarum\Search\SearchServiceProvider;
+use Flarum\Settings\SettingsRepositoryInterface;
+use Flarum\Settings\SettingsServiceProvider;
+use Flarum\Update\UpdateServiceProvider;
+use Flarum\User\UserServiceProvider;
+use Illuminate\Cache\FileStore;
+use Illuminate\Cache\Repository as CacheRepository;
+use Illuminate\Config\Repository as ConfigRepository;
+use Illuminate\Contracts\Cache\Repository;
+use Illuminate\Contracts\Cache\Store;
+use Illuminate\Filesystem\Filesystem;
+use Illuminate\Filesystem\FilesystemServiceProvider;
+use Illuminate\Hashing\HashServiceProvider;
+use Illuminate\Mail\MailServiceProvider;
+use Illuminate\Validation\ValidationServiceProvider;
+use Illuminate\View\ViewServiceProvider;
+use Monolog\Formatter\LineFormatter;
+use Monolog\Handler\StreamHandler;
+use Monolog\Logger;
+use Psr\Log\LoggerInterface;
+
+class InstalledSite implements SiteInterface
+{
+    /**
+     * @var string
+     */
+    protected $basePath;
+
+    /**
+     * @var string
+     */
+    protected $publicPath;
+
+    /**
+     * @var string
+     */
+    protected $storagePath;
+
+    /**
+     * @var array
+     */
+    protected $config;
+
+    public function __construct($basePath, $publicPath, array $config)
+    {
+        $this->basePath = $basePath;
+        $this->publicPath = $publicPath;
+        $this->config = $config;
+    }
+
+    /**
+     * Create and boot a Flarum application instance.
+     *
+     * @return AppInterface
+     */
+    public function bootApp(): AppInterface
+    {
+        return new InstalledApp(
+            $this->bootLaravel(),
+            $this->config
+        );
+    }
+
+    /**
+     * @param $storagePath
+     * @return static
+     */
+    public function setStoragePath($storagePath)
+    {
+        $this->storagePath = $storagePath;
+
+        return $this;
+    }
+
+    protected function bootLaravel(): Application
+    {
+        $laravel = new Application($this->basePath, $this->publicPath);
+
+        if ($this->storagePath) {
+            $laravel->useStoragePath($this->storagePath);
+        }
+
+        $laravel->instance('env', 'production');
+        $laravel->instance('flarum.config', $this->config);
+        $laravel->instance('config', $config = $this->getIlluminateConfig($laravel));
+
+        $this->registerLogger($laravel);
+        $this->registerCache($laravel);
+
+        $laravel->register(DatabaseServiceProvider::class);
+        $laravel->register(MigrationServiceProvider::class);
+        $laravel->register(SettingsServiceProvider::class);
+        $laravel->register(LocaleServiceProvider::class);
+        $laravel->register(BusServiceProvider::class);
+        $laravel->register(FilesystemServiceProvider::class);
+        $laravel->register(HashServiceProvider::class);
+        $laravel->register(MailServiceProvider::class);
+        $laravel->register(ViewServiceProvider::class);
+        $laravel->register(ValidationServiceProvider::class);
+
+        $laravel->register(BusProvider::class);
+
+        $settings = $laravel->make(SettingsRepositoryInterface::class);
+
+        $config->set('mail.driver', $settings->get('mail_driver'));
+        $config->set('mail.host', $settings->get('mail_host'));
+        $config->set('mail.port', $settings->get('mail_port'));
+        $config->set('mail.from.address', $settings->get('mail_from'));
+        $config->set('mail.from.name', $settings->get('forum_title'));
+        $config->set('mail.encryption', $settings->get('mail_encryption'));
+        $config->set('mail.username', $settings->get('mail_username'));
+        $config->set('mail.password', $settings->get('mail_password'));
+
+        $laravel->register(DiscussionServiceProvider::class);
+        $laravel->register(FormatterServiceProvider::class);
+        $laravel->register(FrontendServiceProvider::class);
+        $laravel->register(GroupServiceProvider::class);
+        $laravel->register(NotificationServiceProvider::class);
+        $laravel->register(PostServiceProvider::class);
+        $laravel->register(SearchServiceProvider::class);
+        $laravel->register(UserServiceProvider::class);
+        $laravel->register(UpdateServiceProvider::class);
+
+        $laravel->register(ApiServiceProvider::class);
+        $laravel->register(ForumServiceProvider::class);
+        $laravel->register(AdminServiceProvider::class);
+
+        $laravel->register(ExtensionServiceProvider::class);
+
+        $laravel->boot();
+
+        return $laravel;
+    }
+
+    /**
+     * @param Application $app
+     * @return ConfigRepository
+     */
+    protected function getIlluminateConfig(Application $app)
+    {
+        return new ConfigRepository([
+            'view' => [
+                'paths' => [],
+                'compiled' => $app->storagePath().'/views',
+            ],
+            'mail' => [
+                'driver' => 'mail',
+            ],
+            'filesystems' => [
+                'default' => 'local',
+                'cloud' => 's3',
+                'disks' => [
+                    'flarum-assets' => [
+                        'driver' => 'local',
+                        'root'   => $app->publicPath().'/assets',
+                        'url'    => $app->url('assets')
+                    ],
+                    'flarum-avatars' => [
+                        'driver' => 'local',
+                        'root'   => $app->publicPath().'/assets/avatars'
+                    ]
+                ]
+            ],
+            'session' => [
+                'lifetime' => 120,
+                'files' => $app->storagePath().'/sessions',
+                'cookie' => 'session'
+            ]
+        ]);
+    }
+
+    protected function registerLogger(Application $app)
+    {
+        $logPath = $app->storagePath().'/logs/flarum.log';
+        $handler = new StreamHandler($logPath, Logger::INFO);
+        $handler->setFormatter(new LineFormatter(null, null, true, true));
+
+        $app->instance('log', new Logger($app->environment(), [$handler]));
+        $app->alias('log', LoggerInterface::class);
+    }
+
+    protected function registerCache(Application $app)
+    {
+        $app->singleton('cache.store', function ($app) {
+            return new CacheRepository($app->make('cache.filestore'));
+        });
+        $app->alias('cache.store', Repository::class);
+
+        $app->singleton('cache.filestore', function ($app) {
+            return new FileStore(new Filesystem, $app->storagePath().'/cache');
+        });
+        $app->alias('cache.filestore', Store::class);
+    }
+}
diff --git a/src/Foundation/Site.php b/src/Foundation/Site.php
index 14a4f90da..dc58cb593 100644
--- a/src/Foundation/Site.php
+++ b/src/Foundation/Site.php
@@ -11,281 +11,53 @@
 
 namespace Flarum\Foundation;
 
-use Flarum\Admin\AdminServiceProvider;
-use Flarum\Api\ApiServiceProvider;
-use Flarum\Bus\BusServiceProvider as BusProvider;
-use Flarum\Database\DatabaseServiceProvider;
-use Flarum\Database\MigrationServiceProvider;
-use Flarum\Discussion\DiscussionServiceProvider;
-use Flarum\Extension\ExtensionServiceProvider;
-use Flarum\Formatter\FormatterServiceProvider;
-use Flarum\Forum\ForumServiceProvider;
-use Flarum\Frontend\FrontendServiceProvider;
-use Flarum\Group\GroupServiceProvider;
-use Flarum\Locale\LocaleServiceProvider;
-use Flarum\Notification\NotificationServiceProvider;
-use Flarum\Post\PostServiceProvider;
-use Flarum\Search\SearchServiceProvider;
-use Flarum\Settings\SettingsRepositoryInterface;
-use Flarum\Settings\SettingsServiceProvider;
-use Flarum\User\UserServiceProvider;
-use Illuminate\Bus\BusServiceProvider;
-use Illuminate\Config\Repository as ConfigRepository;
-use Illuminate\Filesystem\FilesystemServiceProvider;
-use Illuminate\Hashing\HashServiceProvider;
-use Illuminate\Mail\MailServiceProvider;
-use Illuminate\Validation\ValidationServiceProvider;
-use Illuminate\View\ViewServiceProvider;
-use Monolog\Formatter\LineFormatter;
-use Monolog\Handler\StreamHandler;
-use Monolog\Logger;
+use InvalidArgumentException;
+use RuntimeException;
 
-// TODO: This should be an interface maybe?
 class Site
 {
     /**
-     * @var Application
+     * @param array $paths
+     * @return SiteInterface
      */
-    protected $app;
-
-    /**
-     * @var string
-     */
-    protected $basePath;
-
-    /**
-     * @var string
-     */
-    protected $publicPath;
-
-    /**
-     * @var string
-     */
-    protected $storagePath;
-
-    /**
-     * @var array
-     */
-    protected $config;
-
-    protected $extenders = [];
-
-    public function __construct()
+    public static function fromPaths(array $paths)
     {
-        $this->basePath = getcwd();
-        $this->publicPath = $this->basePath;
-    }
-
-    /**
-     * @return Application
-     */
-    public function boot()
-    {
-        return $this->getApp();
-    }
-
-    /**
-     * @param $basePath
-     * @return static
-     */
-    public function setBasePath($basePath)
-    {
-        $this->basePath = $basePath;
-
-        return $this;
-    }
-
-    /**
-     * @param $publicPath
-     * @return static
-     */
-    public function setPublicPath($publicPath)
-    {
-        $this->publicPath = $publicPath;
-
-        return $this;
-    }
-
-    /**
-     * @param $storagePath
-     * @return static
-     */
-    public function setStoragePath($storagePath)
-    {
-        $this->storagePath = $storagePath;
-
-        return $this;
-    }
-
-    /**
-     * @param array $config
-     * @return static
-     */
-    public function setConfig(array $config)
-    {
-        $this->config = $config;
-
-        return $this;
-    }
-
-    protected function getConfig()
-    {
-        if (empty($this->config) && file_exists($file = $this->basePath.'/config.php')) {
-            $this->config = include $file;
+        if (! isset($paths['base'])) {
+            throw new InvalidArgumentException(
+                'No base path given'
+            );
         }
 
-        return $this->config;
-    }
-
-    /**
-     * @return Application
-     */
-    protected function getApp()
-    {
-        if ($this->app !== null) {
-            return $this->app;
+        if (! isset($paths['public'])) {
+            $paths['public'] = $paths['base'];
         }
 
         date_default_timezone_set('UTC');
 
-        $app = new Application($this->basePath, $this->publicPath);
-
-        if ($this->storagePath) {
-            $app->useStoragePath($this->storagePath);
-        }
-
-        $app->instance('env', 'production');
-        $app->instance('flarum.config', $this->getConfig());
-        $app->instance('config', $config = $this->getIlluminateConfig($app));
-
-        $this->registerLogger($app);
-
-        $this->registerCache($app);
-
-        $app->register(DatabaseServiceProvider::class);
-        $app->register(MigrationServiceProvider::class);
-        $app->register(SettingsServiceProvider::class);
-        $app->register(LocaleServiceProvider::class);
-        $app->register(BusServiceProvider::class);
-        $app->register(FilesystemServiceProvider::class);
-        $app->register(HashServiceProvider::class);
-        $app->register(MailServiceProvider::class);
-        $app->register(ViewServiceProvider::class);
-        $app->register(ValidationServiceProvider::class);
-
-        $app->register(BusProvider::class);
-
-        if ($app->isInstalled() && $app->isUpToDate()) {
-            $settings = $app->make(SettingsRepositoryInterface::class);
-
-            $config->set('mail.driver', $settings->get('mail_driver'));
-            $config->set('mail.host', $settings->get('mail_host'));
-            $config->set('mail.port', $settings->get('mail_port'));
-            $config->set('mail.from.address', $settings->get('mail_from'));
-            $config->set('mail.from.name', $settings->get('forum_title'));
-            $config->set('mail.encryption', $settings->get('mail_encryption'));
-            $config->set('mail.username', $settings->get('mail_username'));
-            $config->set('mail.password', $settings->get('mail_password'));
-
-            $app->register(DiscussionServiceProvider::class);
-            $app->register(FormatterServiceProvider::class);
-            $app->register(FrontendServiceProvider::class);
-            $app->register(GroupServiceProvider::class);
-            $app->register(NotificationServiceProvider::class);
-            $app->register(PostServiceProvider::class);
-            $app->register(SearchServiceProvider::class);
-            $app->register(UserServiceProvider::class);
-
-            $app->register(ApiServiceProvider::class);
-            $app->register(ForumServiceProvider::class);
-            $app->register(AdminServiceProvider::class);
-
-            foreach ($this->extenders as $extender) {
-                // TODO: Create extenders architecture
-                // $extender->apply($app);
-            }
-
-            $app->register(ExtensionServiceProvider::class);
-        }
-
-        $app->boot();
-
-        $this->app = $app;
-
-        return $app;
-    }
-
-    /**
-     * @param Application $app
-     * @return ConfigRepository
-     */
-    protected function getIlluminateConfig(Application $app)
-    {
-        return new ConfigRepository([
-            'view' => [
-                'paths' => [],
-                'compiled' => $app->storagePath().'/views',
-            ],
-            'mail' => [
-                'driver' => 'mail',
-            ],
-            'filesystems' => [
-                'default' => 'local',
-                'cloud' => 's3',
-                'disks' => [
-                    'flarum-assets' => [
-                        'driver' => 'local',
-                        'root'   => $app->publicPath().'/assets',
-                        'url'    => $app->url('assets')
-                    ],
-                    'flarum-avatars' => [
-                        'driver' => 'local',
-                        'root'   => $app->publicPath().'/assets/avatars'
-                    ]
-                ]
-            ],
-            'session' => [
-                'lifetime' => 120,
-                'files' => $app->storagePath().'/sessions',
-                'cookie' => 'session'
-            ]
-        ]);
-    }
-
-    /**
-     * @param Application $app
-     */
-    protected function registerLogger(Application $app)
-    {
-        $logger = new Logger($app->environment());
-        $logPath = $app->storagePath().'/logs/flarum.log';
-
-        $handler = new StreamHandler($logPath, Logger::DEBUG);
-        $handler->setFormatter(new LineFormatter(null, null, true, true));
-
-        $logger->pushHandler($handler);
-
-        $app->instance('log', $logger);
-        $app->alias('log', 'Psr\Log\LoggerInterface');
-    }
-
-    /**
-     * @param Application $app
-     */
-    protected function registerCache(Application $app)
-    {
-        $app->singleton('cache.store', function ($app) {
-            return new \Illuminate\Cache\Repository($app->make('cache.filestore'));
-        });
-
-        $app->singleton('cache.filestore', function ($app) {
-            return new \Illuminate\Cache\FileStore(
-                new \Illuminate\Filesystem\Filesystem(),
-                $app->storagePath().'/cache'
+        if (static::hasConfigFile($paths['base'])) {
+            return new InstalledSite(
+                $paths['base'],
+                $paths['public'],
+                static::loadConfig($paths['base'])
             );
-        });
+        } else {
+            return new UninstalledSite($paths['base'], $paths['public']);
+        }
+    }
 
-        $app->alias('cache.filestore', 'Illuminate\Contracts\Cache\Store');
-        $app->alias('cache.store', 'Illuminate\Contracts\Cache\Repository');
+    private static function hasConfigFile($basePath)
+    {
+        return file_exists("$basePath/config.php");
+    }
+
+    private static function loadConfig($basePath): array
+    {
+        $config = include "$basePath/config.php";
+
+        if (! is_array($config)) {
+            throw new RuntimeException('config.php should return an array');
+        }
+
+        return $config;
     }
 }
diff --git a/src/Foundation/SiteInterface.php b/src/Foundation/SiteInterface.php
new file mode 100644
index 000000000..9f5b1b97f
--- /dev/null
+++ b/src/Foundation/SiteInterface.php
@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Foundation;
+
+interface SiteInterface
+{
+    /**
+     * Create and boot a Flarum application instance.
+     *
+     * @return AppInterface
+     */
+    public function bootApp(): AppInterface;
+}
diff --git a/src/Foundation/UninstalledSite.php b/src/Foundation/UninstalledSite.php
new file mode 100644
index 000000000..b655e150d
--- /dev/null
+++ b/src/Foundation/UninstalledSite.php
@@ -0,0 +1,133 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Foundation;
+
+use Flarum\Install\Installer;
+use Flarum\Install\InstallServiceProvider;
+use Flarum\Locale\LocaleServiceProvider;
+use Flarum\Settings\SettingsRepositoryInterface;
+use Flarum\Settings\UninstalledSettingsRepository;
+use Illuminate\Config\Repository as ConfigRepository;
+use Illuminate\Contracts\Events\Dispatcher;
+use Illuminate\Filesystem\FilesystemServiceProvider;
+use Illuminate\Validation\ValidationServiceProvider;
+use Illuminate\View\Engines\EngineResolver;
+use Illuminate\View\Engines\PhpEngine;
+use Illuminate\View\FileViewFinder;
+use Monolog\Formatter\LineFormatter;
+use Monolog\Handler\StreamHandler;
+use Monolog\Logger;
+use Psr\Log\LoggerInterface;
+
+class UninstalledSite implements SiteInterface
+{
+    /**
+     * @var string
+     */
+    protected $basePath;
+
+    /**
+     * @var string
+     */
+    protected $publicPath;
+
+    /**
+     * @var string
+     */
+    protected $storagePath;
+
+    public function __construct($basePath, $publicPath)
+    {
+        $this->basePath = $basePath;
+        $this->publicPath = $publicPath;
+    }
+
+    /**
+     * Create and boot a Flarum application instance.
+     *
+     * @return AppInterface
+     */
+    public function bootApp(): AppInterface
+    {
+        return new Installer(
+            $this->bootLaravel()
+        );
+    }
+
+    private function bootLaravel(): Application
+    {
+        $laravel = new Application($this->basePath, $this->publicPath);
+
+        if ($this->storagePath) {
+            $laravel->useStoragePath($this->storagePath);
+        }
+
+        $laravel->instance('env', 'production');
+        $laravel->instance('flarum.config', []);
+        $laravel->instance('config', $config = $this->getIlluminateConfig($laravel));
+
+        $this->registerLogger($laravel);
+
+        $laravel->register(LocaleServiceProvider::class);
+        $laravel->register(FilesystemServiceProvider::class);
+        $laravel->register(ValidationServiceProvider::class);
+
+        $laravel->register(InstallServiceProvider::class);
+
+        $laravel->singleton(
+            SettingsRepositoryInterface::class,
+            UninstalledSettingsRepository::class
+        );
+
+        $laravel->singleton('view', function ($app) {
+            $engines = new EngineResolver();
+            $engines->register('php', function () {
+                return new PhpEngine();
+            });
+            $finder = new FileViewFinder($app->make('files'), []);
+            $dispatcher = $app->make(Dispatcher::class);
+
+            return new \Illuminate\View\Factory(
+                $engines, $finder, $dispatcher
+            );
+        });
+
+        $laravel->boot();
+
+        return $laravel;
+    }
+
+    /**
+     * @param Application $app
+     * @return ConfigRepository
+     */
+    protected function getIlluminateConfig(Application $app)
+    {
+        return new ConfigRepository([
+            'session' => [
+                'lifetime' => 120,
+                'files' => $app->storagePath().'/sessions',
+                'cookie' => 'session'
+            ]
+        ]);
+    }
+
+    protected function registerLogger(Application $app)
+    {
+        $logPath = $app->storagePath().'/logs/flarum-installer.log';
+        $handler = new StreamHandler($logPath, Logger::DEBUG);
+        $handler->setFormatter(new LineFormatter(null, null, true, true));
+
+        $app->instance('log', new Logger('Flarum Installer', [$handler]));
+        $app->alias('log', LoggerInterface::class);
+    }
+}
diff --git a/src/Http/Server.php b/src/Http/Server.php
index 9583d9180..825dc4bce 100644
--- a/src/Http/Server.php
+++ b/src/Http/Server.php
@@ -11,43 +11,22 @@
 
 namespace Flarum\Http;
 
-use Flarum\Foundation\Application;
-use Flarum\Foundation\Site;
-use Flarum\Http\Middleware\DispatchRoute;
-use Flarum\Http\Middleware\HandleErrors;
-use Flarum\Http\Middleware\StartSession;
-use Flarum\Install\InstallServiceProvider;
-use Flarum\Update\UpdateServiceProvider;
-use Psr\Http\Message\ResponseInterface as Response;
-use Psr\Http\Message\ServerRequestInterface as Request;
-use Psr\Http\Server\MiddlewareInterface as Middleware;
-use Psr\Http\Server\RequestHandlerInterface as Handler;
-use Zend\Diactoros\Response\HtmlResponse;
+use Psr\Http\Server\RequestHandlerInterface;
 use Zend\Diactoros\Server as DiactorosServer;
-use Zend\Stratigility\MiddlewarePipe;
-use function Zend\Stratigility\middleware;
-use function Zend\Stratigility\path;
 
-class Server implements Middleware, Handler
+class Server
 {
-    /**
-     * @param Site $site
-     * @return Server
-     */
-    public static function fromSite(Site $site)
-    {
-        return new static($site->boot());
-    }
+    protected $requestHandler;
 
-    public function __construct(Application $app)
+    public function __construct(RequestHandlerInterface $requestHandler)
     {
-        $this->app = $app;
+        $this->requestHandler = $requestHandler;
     }
 
     public function listen()
     {
         DiactorosServer::createServer(
-            [$this, 'handle'],
+            [$this->requestHandler, 'handle'],
             $_SERVER,
             $_GET,
             $_POST,
@@ -55,105 +34,4 @@ class Server implements Middleware, Handler
             $_FILES
         )->listen();
     }
-
-    /**
-     * Use as PSR-15 middleware.
-     */
-    public function process(Request $request, Handler $handler): Response
-    {
-        $middleware = $this->getMiddleware($request->getUri()->getPath());
-
-        return $middleware->process($request, $handler);
-    }
-
-    /**
-     * Use as PSR-15 request handler.
-     */
-    public function handle(Request $request): Response
-    {
-        $middleware = $this->getMiddleware($request->getUri()->getPath());
-
-        return $middleware->handle($request);
-    }
-
-    /**
-     * @param string $requestPath
-     * @return MiddlewarePipe
-     */
-    protected function getMiddleware($requestPath)
-    {
-        $pipe = new MiddlewarePipe;
-
-        if (! $this->app->isInstalled()) {
-            return $this->getInstallerMiddleware($pipe);
-        }
-
-        if ($this->app->isDownForMaintenance()) {
-            return $this->getMaintenanceMiddleware($pipe);
-        }
-
-        if (! $this->app->isUpToDate()) {
-            return $this->getUpdaterMiddleware($pipe);
-        }
-
-        $api = parse_url($this->app->url('api'), PHP_URL_PATH);
-        $admin = parse_url($this->app->url('admin'), PHP_URL_PATH);
-        $forum = parse_url($this->app->url(''), PHP_URL_PATH) ?: '/';
-
-        if ($this->pathStartsWith($requestPath, $api)) {
-            $pipe->pipe(path($api, $this->app->make('flarum.api.middleware')));
-        } elseif ($this->pathStartsWith($requestPath, $admin)) {
-            $pipe->pipe(path($admin, $this->app->make('flarum.admin.middleware')));
-        } else {
-            $pipe->pipe(path($forum, $this->app->make('flarum.forum.middleware')));
-        }
-
-        return $pipe;
-    }
-
-    private function pathStartsWith($path, $prefix)
-    {
-        return $path === $prefix || starts_with($path, "$prefix/");
-    }
-
-    protected function getInstallerMiddleware(MiddlewarePipe $pipe)
-    {
-        $this->app->register(InstallServiceProvider::class);
-
-        // FIXME: Re-enable HandleErrors middleware, if possible
-        // (Right now it tries to resolve a database connection because of the injected settings repo instance)
-        // We could register a different settings repo when Flarum is not installed
-        //$pipe->pipe($this->app->make(HandleErrors::class, ['debug' => true]));
-        //$pipe->pipe($this->app->make(StartSession::class));
-        $pipe->pipe($this->app->make(DispatchRoute::class, ['routes' => $this->app->make('flarum.install.routes')]));
-
-        return $pipe;
-    }
-
-    protected function getMaintenanceMiddleware(MiddlewarePipe $pipe)
-    {
-        $pipe->pipe(middleware(function () {
-            return new HtmlResponse(file_get_contents($this->getErrorDir().'/503.html', 503));
-        }));
-
-        // TODO: FOR API render JSON-API error document for HTTP 503
-
-        return $pipe;
-    }
-
-    protected function getUpdaterMiddleware(MiddlewarePipe $pipe)
-    {
-        $this->app->register(UpdateServiceProvider::class);
-
-        $pipe->pipe($this->app->make(DispatchRoute::class, ['routes' => $this->app->make('flarum.update.routes')]));
-
-        // TODO: FOR API render JSON-API error document for HTTP 503
-
-        return $pipe;
-    }
-
-    private function getErrorDir()
-    {
-        return __DIR__.'/../../error';
-    }
 }
diff --git a/src/Install/Installer.php b/src/Install/Installer.php
new file mode 100644
index 000000000..0ca0253e7
--- /dev/null
+++ b/src/Install/Installer.php
@@ -0,0 +1,61 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Install;
+
+use Flarum\Foundation\AppInterface;
+use Flarum\Foundation\Application;
+use Flarum\Http\Middleware\DispatchRoute;
+use Flarum\Http\Middleware\HandleErrorsWithWhoops;
+use Flarum\Http\Middleware\StartSession;
+use Flarum\Install\Console\InstallCommand;
+use Zend\Stratigility\MiddlewarePipe;
+
+class Installer implements AppInterface
+{
+    /**
+     * @var Application
+     */
+    protected $laravel;
+
+    public function __construct(Application $laravel)
+    {
+        $this->laravel = $laravel;
+    }
+
+    /**
+     * @return \Psr\Http\Server\RequestHandlerInterface
+     */
+    public function getRequestHandler()
+    {
+        $pipe = new MiddlewarePipe;
+        $pipe->pipe($this->laravel->make(HandleErrorsWithWhoops::class));
+        #$pipe->pipe($this->laravel->make(StartSession::class));
+        $pipe->pipe(
+            $this->laravel->make(
+                DispatchRoute::class,
+                ['routes' => $this->laravel->make('flarum.install.routes')]
+            )
+        );
+
+        return $pipe;
+    }
+
+    /**
+     * @return \Symfony\Component\Console\Command\Command[]
+     */
+    public function getConsoleCommands()
+    {
+        return [
+            $this->laravel->make(InstallCommand::class),
+        ];
+    }
+}
diff --git a/src/Settings/UninstalledSettingsRepository.php b/src/Settings/UninstalledSettingsRepository.php
new file mode 100644
index 000000000..fb8d1af34
--- /dev/null
+++ b/src/Settings/UninstalledSettingsRepository.php
@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * This file is part of Flarum.
+ *
+ * (c) Toby Zerner <toby.zerner@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Flarum\Settings;
+
+class UninstalledSettingsRepository implements SettingsRepositoryInterface
+{
+    public function all()
+    {
+        return [];
+    }
+
+    public function get($key, $default = null)
+    {
+        return $default;
+    }
+
+    public function set($key, $value)
+    {
+        // Do nothing
+    }
+
+    public function delete($keyLike)
+    {
+        // Do nothing
+    }
+}