diff --git a/apps/advanced/frontend/controllers/SiteController.php b/apps/advanced/frontend/controllers/SiteController.php
index 285b553..c4f7f53 100644
--- a/apps/advanced/frontend/controllers/SiteController.php
+++ b/apps/advanced/frontend/controllers/SiteController.php
@@ -16,7 +16,7 @@ class SiteController extends Controller
 	{
 		return array(
 			'captcha' => array(
-				'class' => 'yii\web\CaptchaAction',
+				'class' => 'yii\captcha\CaptchaAction',
 			),
 		);
 	}
diff --git a/apps/advanced/frontend/views/site/contact.php b/apps/advanced/frontend/views/site/contact.php
index 62bb9ef..3a3fb0c 100644
--- a/apps/advanced/frontend/views/site/contact.php
+++ b/apps/advanced/frontend/views/site/contact.php
@@ -1,7 +1,7 @@
 <?php
 use yii\helpers\Html;
 use yii\widgets\ActiveForm;
-use yii\widgets\Captcha;
+use yii\captcha\Captcha;
 
 /**
  * @var yii\base\View $this
diff --git a/apps/basic/controllers/SiteController.php b/apps/basic/controllers/SiteController.php
index b2eec12..04da8b3 100644
--- a/apps/basic/controllers/SiteController.php
+++ b/apps/basic/controllers/SiteController.php
@@ -13,7 +13,7 @@ class SiteController extends Controller
 	{
 		return array(
 			'captcha' => array(
-				'class' => 'yii\web\CaptchaAction',
+				'class' => 'yii\captcha\CaptchaAction',
 				'fixedVerifyCode' => YII_ENV_DEV ? 'testme' : null,
 			),
 		);
diff --git a/apps/basic/views/site/contact.php b/apps/basic/views/site/contact.php
index c0e3bff..1997267 100644
--- a/apps/basic/views/site/contact.php
+++ b/apps/basic/views/site/contact.php
@@ -1,7 +1,7 @@
 <?php
 use yii\helpers\Html;
 use yii\widgets\ActiveForm;
-use yii\widgets\Captcha;
+use yii\captcha\Captcha;
 
 /**
  * @var yii\base\View $this
diff --git a/framework/yii/assets.php b/framework/yii/assets.php
index dd657f3..c52bca6 100644
--- a/framework/yii/assets.php
+++ b/framework/yii/assets.php
@@ -6,6 +6,6 @@ return array(
 	yii\validators\PunycodeAsset::className(),
 	yii\validators\ValidationAsset::className(),
 	yii\widgets\ActiveFormAsset::className(),
-	yii\widgets\CaptchaAsset::className(),
+	yii\captcha\CaptchaAsset::className(),
 	yii\widgets\MaskedInputAsset::className(),
 );
diff --git a/framework/yii/assets/yii.captcha.js b/framework/yii/assets/yii.captcha.js
index 7dfe3cc..af14faa 100644
--- a/framework/yii/assets/yii.captcha.js
+++ b/framework/yii/assets/yii.captcha.js
@@ -1,7 +1,7 @@
 /**
  * Yii Captcha widget.
  *
- * This is the JavaScript widget used by the yii\widgets\Captcha widget.
+ * This is the JavaScript widget used by the yii\captcha\Captcha widget.
  *
  * @link http://www.yiiframework.com/
  * @copyright Copyright (c) 2008 Yii Software LLC
diff --git a/framework/yii/base/Model.php b/framework/yii/base/Model.php
index d2c8aa5..bb0f4b1 100644
--- a/framework/yii/base/Model.php
+++ b/framework/yii/base/Model.php
@@ -117,8 +117,8 @@ class Model extends Component implements \IteratorAggregate, \ArrayAccess
 	 *     array('password', 'compare', 'compareAttribute' => 'password2', 'on' => 'register'),
 	 *     // an inline validator defined via the "authenticate()" method in the model class
 	 *     array('password', 'authenticate', 'on' => 'login'),
-	 *     // a validator of class "CaptchaValidator"
-	 *     array('captcha', 'CaptchaValidator'),
+	 *     // a validator of class "DateRangeValidator"
+	 *     array('dateRange', 'DateRangeValidator'),
 	 * );
 	 * ~~~
 	 *
diff --git a/framework/yii/widgets/Captcha.php b/framework/yii/captcha/Captcha.php
similarity index 98%
rename from framework/yii/widgets/Captcha.php
rename to framework/yii/captcha/Captcha.php
index 1c538fb..c09399f 100644
--- a/framework/yii/widgets/Captcha.php
+++ b/framework/yii/captcha/Captcha.php
@@ -5,13 +5,14 @@
  * @license http://www.yiiframework.com/license/
  */
 
-namespace yii\widgets;
+namespace yii\Captcha;
 
 use Yii;
 use yii\base\InvalidConfigException;
 use yii\helpers\Html;
 use yii\helpers\Json;
-use yii\web\CaptchaAction;
+use yii\widgets\InputWidget;
+
 
 /**
  * Captcha renders a CAPTCHA image and an input field that takes user-entered verification code.
diff --git a/framework/yii/web/CaptchaAction.php b/framework/yii/captcha/CaptchaAction.php
similarity index 97%
rename from framework/yii/web/CaptchaAction.php
rename to framework/yii/captcha/CaptchaAction.php
index fef44fd..771cc02 100644
--- a/framework/yii/web/CaptchaAction.php
+++ b/framework/yii/captcha/CaptchaAction.php
@@ -5,12 +5,11 @@
  * @license http://www.yiiframework.com/license/
  */
 
-namespace yii\web;
+namespace yii\captcha;
 
 use Yii;
 use yii\base\Action;
 use yii\base\InvalidConfigException;
-use yii\widgets\Captcha;
 
 /**
  * CaptchaAction renders a CAPTCHA image.
@@ -85,7 +84,7 @@ class CaptchaAction extends Action
 	/**
 	 * @var string the TrueType font file. This can be either a file path or path alias.
 	 */
-	public $fontFile = '@yii/web/SpicyRice.ttf';
+	public $fontFile = '@yii/captcha/SpicyRice.ttf';
 	/**
 	 * @var string the fixed verification code. When this property is set,
 	 * [[getVerifyCode()]] will always return the value of this property.
@@ -116,12 +115,14 @@ class CaptchaAction extends Action
 		if (isset($_GET[self::REFRESH_GET_VAR])) {
 			// AJAX request for regenerating code
 			$code = $this->getVerifyCode(true);
+			/** @var \yii\web\Controller $controller */
+			$controller = $this->controller;
 			return json_encode(array(
 				'hash1' => $this->generateValidationHash($code),
 				'hash2' => $this->generateValidationHash(strtolower($code)),
 				// we add a random 'v' parameter so that FireFox can refresh the image
 				// when src attribute of image tag is changed
-				'url' => $this->controller->createUrl($this->id, array('v' => uniqid())),
+				'url' => $controller->createUrl($this->id, array('v' => uniqid())),
 			));
 		} else {
 			$this->setHttpHeaders();
@@ -153,7 +154,7 @@ class CaptchaAction extends Action
 			return $this->fixedVerifyCode;
 		}
 
-		$session = Yii::$app->session;
+		$session = Yii::$app->getSession();
 		$session->open();
 		$name = $this->getSessionKey();
 		if ($session[$name] === null || $regenerate) {
diff --git a/framework/yii/widgets/CaptchaAsset.php b/framework/yii/captcha/CaptchaAsset.php
similarity index 94%
rename from framework/yii/widgets/CaptchaAsset.php
rename to framework/yii/captcha/CaptchaAsset.php
index 4322e8e..50c75b7 100644
--- a/framework/yii/widgets/CaptchaAsset.php
+++ b/framework/yii/captcha/CaptchaAsset.php
@@ -5,7 +5,8 @@
  * @license http://www.yiiframework.com/license/
  */
 
-namespace yii\widgets;
+namespace yii\captcha;
+
 use yii\web\AssetBundle;
 
 /**
diff --git a/framework/yii/validators/CaptchaValidator.php b/framework/yii/captcha/CaptchaValidator.php
similarity index 96%
rename from framework/yii/validators/CaptchaValidator.php
rename to framework/yii/captcha/CaptchaValidator.php
index 2a16f57..e710573 100644
--- a/framework/yii/validators/CaptchaValidator.php
+++ b/framework/yii/captcha/CaptchaValidator.php
@@ -5,11 +5,13 @@
  * @license http://www.yiiframework.com/license/
  */
 
-namespace yii\validators;
+namespace yii\captcha;
 
 use Yii;
 use yii\base\InvalidConfigException;
 use yii\helpers\Html;
+use yii\validators\ValidationAsset;
+use yii\validators\Validator;
 
 /**
  * CaptchaValidator validates that the attribute value is the same as the verification code displayed in the CAPTCHA.
@@ -74,7 +76,7 @@ class CaptchaValidator extends Validator
 	/**
 	 * Returns the CAPTCHA action object.
 	 * @throws InvalidConfigException
-	 * @return \yii\web\CaptchaAction the action object
+	 * @return \yii\captcha\CaptchaAction the action object
 	 */
 	public function getCaptchaAction()
 	{
diff --git a/framework/yii/web/SpicyRice.md b/framework/yii/captcha/SpicyRice.md
similarity index 100%
rename from framework/yii/web/SpicyRice.md
rename to framework/yii/captcha/SpicyRice.md
diff --git a/framework/yii/web/SpicyRice.ttf b/framework/yii/captcha/SpicyRice.ttf
similarity index 100%
rename from framework/yii/web/SpicyRice.ttf
rename to framework/yii/captcha/SpicyRice.ttf
diff --git a/framework/yii/classes.php b/framework/yii/classes.php
index 41c9a3a..a638dc0 100644
--- a/framework/yii/classes.php
+++ b/framework/yii/classes.php
@@ -91,6 +91,10 @@ return array(
 	'yii\caching\WinCache' => YII_PATH . '/caching/WinCache.php',
 	'yii\caching\XCache' => YII_PATH . '/caching/XCache.php',
 	'yii\caching\ZendDataCache' => YII_PATH . '/caching/ZendDataCache.php',
+	'yii\captcha\Captcha' => YII_PATH . '/captcha/Captcha.php',
+	'yii\captcha\CaptchaAction' => YII_PATH . '/captcha/CaptchaAction.php',
+	'yii\captcha\CaptchaAsset' => YII_PATH . '/captcha/CaptchaAsset.php',
+	'yii\captcha\CaptchaValidator' => YII_PATH . '/captcha/CaptchaValidator.php',
 	'yii\data\ActiveDataProvider' => YII_PATH . '/data/ActiveDataProvider.php',
 	'yii\data\ArrayDataProvider' => YII_PATH . '/data/ArrayDataProvider.php',
 	'yii\data\DataProvider' => YII_PATH . '/data/DataProvider.php',
@@ -167,7 +171,6 @@ return array(
 	'yii\rbac\PhpManager' => YII_PATH . '/rbac/PhpManager.php',
 	'yii\requirements\YiiRequirementChecker' => YII_PATH . '/requirements/YiiRequirementChecker.php',
 	'yii\validators\BooleanValidator' => YII_PATH . '/validators/BooleanValidator.php',
-	'yii\validators\CaptchaValidator' => YII_PATH . '/validators/CaptchaValidator.php',
 	'yii\validators\CompareValidator' => YII_PATH . '/validators/CompareValidator.php',
 	'yii\validators\DateValidator' => YII_PATH . '/validators/DateValidator.php',
 	'yii\validators\DefaultValueValidator' => YII_PATH . '/validators/DefaultValueValidator.php',
@@ -193,7 +196,6 @@ return array(
 	'yii\web\AssetConverter' => YII_PATH . '/web/AssetConverter.php',
 	'yii\web\AssetManager' => YII_PATH . '/web/AssetManager.php',
 	'yii\web\CacheSession' => YII_PATH . '/web/CacheSession.php',
-	'yii\web\CaptchaAction' => YII_PATH . '/web/CaptchaAction.php',
 	'yii\web\Controller' => YII_PATH . '/web/Controller.php',
 	'yii\web\Cookie' => YII_PATH . '/web/Cookie.php',
 	'yii\web\CookieCollection' => YII_PATH . '/web/CookieCollection.php',
@@ -225,14 +227,18 @@ return array(
 	'yii\widgets\ActiveFormAsset' => YII_PATH . '/widgets/ActiveFormAsset.php',
 	'yii\widgets\Block' => YII_PATH . '/widgets/Block.php',
 	'yii\widgets\Breadcrumbs' => YII_PATH . '/widgets/Breadcrumbs.php',
-	'yii\widgets\Captcha' => YII_PATH . '/widgets/Captcha.php',
-	'yii\widgets\CaptchaAsset' => YII_PATH . '/widgets/CaptchaAsset.php',
 	'yii\widgets\ContentDecorator' => YII_PATH . '/widgets/ContentDecorator.php',
 	'yii\widgets\DetailView' => YII_PATH . '/widgets/DetailView.php',
 	'yii\widgets\FragmentCache' => YII_PATH . '/widgets/FragmentCache.php',
+	'yii\widgets\grid\CheckboxColumn' => YII_PATH . '/widgets/grid/CheckboxColumn.php',
+	'yii\widgets\grid\Column' => YII_PATH . '/widgets/grid/Column.php',
+	'yii\widgets\grid\DataColumn' => YII_PATH . '/widgets/grid/DataColumn.php',
+	'yii\widgets\GridView' => YII_PATH . '/widgets/GridView.php',
 	'yii\widgets\InputWidget' => YII_PATH . '/widgets/InputWidget.php',
 	'yii\widgets\LinkPager' => YII_PATH . '/widgets/LinkPager.php',
-	'yii\widgets\ListPager' => YII_PATH . '/widgets/ListPager.php',
+	'yii\widgets\LinkSorter' => YII_PATH . '/widgets/LinkSorter.php',
+	'yii\widgets\ListView' => YII_PATH . '/widgets/ListView.php',
+	'yii\widgets\ListViewBase' => YII_PATH . '/widgets/ListViewBase.php',
 	'yii\widgets\MaskedInput' => YII_PATH . '/widgets/MaskedInput.php',
 	'yii\widgets\MaskedInputAsset' => YII_PATH . '/widgets/MaskedInputAsset.php',
 	'yii\widgets\Menu' => YII_PATH . '/widgets/Menu.php',
diff --git a/framework/yii/validators/Validator.php b/framework/yii/validators/Validator.php
index fe31936..c519706 100644
--- a/framework/yii/validators/Validator.php
+++ b/framework/yii/validators/Validator.php
@@ -49,7 +49,7 @@ abstract class Validator extends Component
 	 */
 	public static $builtInValidators = array(
 		'boolean' => 'yii\validators\BooleanValidator',
-		'captcha' => 'yii\validators\CaptchaValidator',
+		'captcha' => 'yii\captcha\CaptchaValidator',
 		'compare' => 'yii\validators\CompareValidator',
 		'date' => 'yii\validators\DateValidator',
 		'default' => 'yii\validators\DefaultValueValidator',
diff --git a/tests/unit/data/base/Singer.php b/tests/unit/data/base/Singer.php
index f1b91e1..5e9111d 100644
--- a/tests/unit/data/base/Singer.php
+++ b/tests/unit/data/base/Singer.php
@@ -15,7 +15,7 @@ class Singer extends Model
 		return array(
 			array('lastName', 'default', 'value' => 'Lennon'),
 			array('lastName', 'required'),
-			array('underscore_style', 'yii\validators\CaptchaValidator'),
+			array('underscore_style', 'yii\captcha\CaptchaValidator'),
 		);
 	}
 }