diff --git a/bin/gpm b/bin/gpm
index d4932a20e..e8eff5a00 100755
--- a/bin/gpm
+++ b/bin/gpm
@@ -1,6 +1,7 @@
 #!/usr/bin/env php
 <?php
-define('GRAV_CLI', true);
+\define('GRAV_CLI', true);
+\define('GRAV_REQUEST_TIME', microtime(true));
 
 if (!file_exists(__DIR__ . '/../vendor')){
     require_once __DIR__ . '/../system/src/Grav/Common/Composer.php';
@@ -20,7 +21,7 @@ if (!file_exists(__DIR__ . '/../vendor')){
 use Symfony\Component\Console\Application;
 use Grav\Common\Grav;
 
-$autoload = require_once(__DIR__ . '/../vendor/autoload.php');
+$autoload = require __DIR__ . '/../vendor/autoload.php';
 
 if (version_compare($ver = PHP_VERSION, $req = GRAV_PHP_MIN, '<')) {
     exit(sprintf("You are running PHP %s, but Grav needs at least PHP %s to run.\n", $ver, $req));
diff --git a/bin/grav b/bin/grav
index cc660b1e4..d68be7c04 100755
--- a/bin/grav
+++ b/bin/grav
@@ -1,6 +1,7 @@
 #!/usr/bin/env php
 <?php
-define('GRAV_CLI', true);
+\define('GRAV_CLI', true);
+\define('GRAV_REQUEST_TIME', microtime(true));
 
 if (!file_exists(__DIR__ . '/../vendor')){
     require_once __DIR__ . '/../system/src/Grav/Common/Composer.php';
@@ -18,7 +19,7 @@ if (!file_exists(__DIR__ . '/../vendor')){
     echo "\n\n";
 }
 
-$autoload = require_once(__DIR__ . '/../vendor/autoload.php');
+$autoload = require __DIR__ . '/../vendor/autoload.php';
 Grav::instance(array('loader' => $autoload));
 
 if (version_compare($ver = PHP_VERSION, $req = GRAV_PHP_MIN, '<')) {
diff --git a/bin/plugin b/bin/plugin
index a8b089a89..a219655b6 100755
--- a/bin/plugin
+++ b/bin/plugin
@@ -1,6 +1,7 @@
 #!/usr/bin/env php
 <?php
-define('GRAV_CLI', true);
+\define('GRAV_CLI', true);
+\define('GRAV_REQUEST_TIME', microtime(true));
 
 if (!file_exists(__DIR__ . '/../vendor')) {
     require_once __DIR__ . '/../system/src/Grav/Common/Composer.php';
@@ -24,7 +25,7 @@ use Grav\Common\Grav;
 use Grav\Common\Config\Setup;
 use Grav\Common\Filesystem\Folder;
 
-$autoload = require_once(__DIR__ . '/../vendor/autoload.php');
+$autoload = require __DIR__ . '/../vendor/autoload.php';
 
 if (version_compare($ver = PHP_VERSION, $req = GRAV_PHP_MIN, '<')) {
     exit(sprintf("You are running PHP %s, but Grav needs at least PHP %s to run.\n", $ver, $req));
@@ -83,10 +84,10 @@ $output->getFormatter()->setStyle('white', new OutputFormatterStyle('white', nul
 
 if (!$name) {
     $output->writeln('');
-    $output->writeln("<red>Usage:</red>");
+    $output->writeln('<red>Usage:</red>');
     $output->writeln("  {$bin} [slug] [command] [arguments]");
     $output->writeln('');
-    $output->writeln("<red>Example:</red>");
+    $output->writeln('<red>Example:</red>');
     $output->writeln("  {$bin} error log -l 1 --trace");
     $list = Folder::all('plugins://', ['compare' => 'Pathname', 'pattern' => '/\/cli\/' . $pattern . '$/usm', 'levels' => 2]);
 
@@ -104,7 +105,7 @@ if (!$name) {
             }
 
             $available[] = $entry;
-            $output->writeln('  ' . $index . ". <red>" . str_pad($entry, 15) . "</red> <white>${bin} ${entry} list</white>");
+            $output->writeln('  ' . $index . '. <red>' . str_pad($entry, 15) . "</red> <white>${bin} ${entry} list</white>");
         }
     }
 
diff --git a/index.php b/index.php
index 4a9c64984..64154df89 100644
--- a/index.php
+++ b/index.php
@@ -9,6 +9,7 @@
 
 namespace Grav;
 
+\define('GRAV_REQUEST_TIME', microtime(true));
 \define('GRAV_PHP_MIN', '7.1.3');
 
 if (version_compare($ver = PHP_VERSION, $req = GRAV_PHP_MIN, '<')) {
diff --git a/system/src/Grav/Common/Composer.php b/system/src/Grav/Common/Composer.php
index 26719252c..65c994564 100644
--- a/system/src/Grav/Common/Composer.php
+++ b/system/src/Grav/Common/Composer.php
@@ -11,7 +11,7 @@ namespace Grav\Common;
 class Composer
 {
     /** @const Default composer location */
-    const DEFAULT_PATH = "bin/composer.phar";
+    const DEFAULT_PATH = 'bin/composer.phar';
 
     /**
      * Returns the location of composer.
@@ -20,12 +20,12 @@ class Composer
      */
     public static function getComposerLocation()
     {
-        if (!function_exists('shell_exec') || strtolower(substr(PHP_OS, 0, 3)) === 'win') {
+        if (!\function_exists('shell_exec') || stripos(PHP_OS, 'win') === 0) {
             return self::DEFAULT_PATH;
         }
 
         // check for global composer install
-        $path = trim(shell_exec("command -v composer"));
+        $path = trim(shell_exec('command -v composer'));
 
         // fall back to grav bundled composer
         if (!$path || !preg_match('/(composer|composer\.phar)$/', $path)) {
diff --git a/system/src/Grav/Common/Debugger.php b/system/src/Grav/Common/Debugger.php
index 8fee09fa7..50c77bbe4 100644
--- a/system/src/Grav/Common/Debugger.php
+++ b/system/src/Grav/Common/Debugger.php
@@ -9,7 +9,13 @@
 namespace Grav\Common;
 
 use DebugBar\DataCollector\ConfigCollector;
+use DebugBar\DataCollector\ExceptionsCollector;
+use DebugBar\DataCollector\MemoryCollector;
 use DebugBar\DataCollector\MessagesCollector;
+use DebugBar\DataCollector\PhpInfoCollector;
+use DebugBar\DataCollector\RequestDataCollector;
+use DebugBar\DataCollector\TimeDataCollector;
+use DebugBar\DebugBar;
 use DebugBar\JavascriptRenderer;
 use DebugBar\StandardDebugBar;
 use Grav\Common\Config\Config;
@@ -28,13 +34,16 @@ class Debugger
     /** @var StandardDebugBar $debugbar */
     protected $debugbar;
 
+    /** @var bool */
     protected $enabled;
 
+    /** @var array */
     protected $timers = [];
 
     /** @var string[] $deprecations */
     protected $deprecations = [];
 
+    /** @var callable */
     protected $errorHandler;
 
     /**
@@ -42,11 +51,26 @@ class Debugger
      */
     public function __construct()
     {
+        $currentTime = microtime(true);
+
+        if (!\defined('GRAV_REQUEST_TIME')) {
+            \define('GRAV_REQUEST_TIME', $currentTime);
+        }
+
         // Enable debugger until $this->init() gets called.
         $this->enabled = true;
 
-        $this->debugbar = new StandardDebugBar();
-        $this->debugbar['time']->addMeasure('Loading', $this->debugbar['time']->getRequestStartTime(), microtime(true));
+        $debugbar = new DebugBar();
+        $debugbar->addCollector(new PhpInfoCollector());
+        $debugbar->addCollector(new MessagesCollector());
+        $debugbar->addCollector(new RequestDataCollector());
+        $debugbar->addCollector(new TimeDataCollector($_SERVER['REQUEST_TIME_FLOAT'] ?? GRAV_REQUEST_TIME));
+
+        $debugbar['time']->addMeasure('Server', $debugbar['time']->getRequestStartTime(), GRAV_REQUEST_TIME);
+        $debugbar['time']->addMeasure('Loading', GRAV_REQUEST_TIME, $currentTime);
+        $debugbar['time']->addMeasure('Debugger', $currentTime, microtime(true));
+
+        $this->debugbar = $debugbar;
 
         // Set deprecation collector.
         $this->setErrorHandler();
@@ -72,9 +96,11 @@ class Debugger
 
             ksort($plugins_config);
 
-
-            $this->debugbar->addCollector(new ConfigCollector((array)$this->config->get('system'), 'Config'));
-            $this->debugbar->addCollector(new ConfigCollector($plugins_config, 'Plugins'));
+            $debugbar = $this->debugbar;
+            $debugbar->addCollector(new MemoryCollector());
+            $debugbar->addCollector(new ExceptionsCollector());
+            $debugbar->addCollector(new ConfigCollector((array)$this->config->get('system'), 'Config'));
+            $debugbar->addCollector(new ConfigCollector($plugins_config, 'Plugins'));
             $this->addMessage('Grav v' . GRAV_VERSION);
         }
 
@@ -229,7 +255,7 @@ class Debugger
     /**
      * Start a timer with an associated name and description
      *
-     * @param             $name
+     * @param string      $name
      * @param string|null $description
      *
      * @return $this
@@ -253,7 +279,7 @@ class Debugger
      */
     public function stopTimer($name)
     {
-        if (in_array($name, $this->timers, true) && ($name[0] === '_' || $this->enabled())) {
+        if (\in_array($name, $this->timers, true) && ($name[0] === '_' || $this->enabled())) {
             $this->debugbar['time']->stopMeasure($name);
         }
 
@@ -411,8 +437,8 @@ class Debugger
 
         $trace = [];
         foreach ($deprecated['trace'] as $current) {
-            $class = isset($current['class']) ? $current['class'] : '';
-            $type = isset($current['type']) ? $current['type'] : '';
+            $class = $current['class'] ?? '';
+            $type = $current['type'] ?? '';
             $function = $this->getFunction($current);
             if (isset($current['file'])) {
                 $current['file'] = str_replace(GRAV_ROOT . '/', '', $current['file']);