diff --git a/file/js/be.bastelstu.Chat.litcoffee b/file/js/be.bastelstu.Chat.litcoffee
index 1c1849e..986bd9f 100644
--- a/file/js/be.bastelstu.Chat.litcoffee
+++ b/file/js/be.bastelstu.Chat.litcoffee
@@ -85,7 +85,7 @@ exposed by a function if necessary.
 Initialize **Tims Chat**. Bind needed DOM events and initialize data structures.
 
 		initialized = false
-		init = (roomID, config, titleTemplate, messageTemplate, userTemplate, userMenuTemplate) ->
+		init = (roomID, config, titleTemplate, messageTemplate, userTemplate, userMenuTemplate, userInviteDialogTemplate) ->
 			return false if initialized
 			initialized = true
 			
@@ -96,13 +96,24 @@ Initialize **Tims Chat**. Bind needed DOM events and initialize data structures.
 			v.messageTemplate = messageTemplate
 			v.userTemplate = userTemplate
 			v.userMenuTemplate = userMenuTemplate
+			v.userInviteDialogTemplate = userInviteDialogTemplate
+			v.userInviteDialogUserListEntryTemplate = new WCF.Template """
+				<dl>
+					<dt></dt>
+					<dd>
+						<label>
+							<input type="checkbox" id="userInviteDialogUserID-{$user.objectID}" value="{$user.objectID}" checked="checked" /> {$user.label}
+						</label>
+					</dd>
+				</dl>
+			"""
 			
 			console.log 'Initializing'
 
 When **Tims Chat** becomes focused mark the chat as active and remove the number of new messages from the title.
 
 			$(window).focus ->
-				document.title = v.titleTemplate.fetch(roomList.active) if roomList.active?.title? and roomList.active.title.trim() isnt ''
+				document.title = v.titleTemplate.fetch(getRoomList().active) if roomList.active?.title? and roomList.active.title.trim() isnt ''
 				
 				newMessageCount = 0
 				isActive = true
@@ -178,7 +189,7 @@ Open the smiley wcfDialog
 				overlaySmileyList.css
 					'max-height': $(window).height() - overlaySmileyList.parent().siblings('.dialogTitlebar').outerHeight()
 					'overflow': 'auto'
-			
+					
 Handle private channel menu
 
 			$('#timsChatMessageTabMenu > .tabMenu').on 'click', '.timsChatMessageTabMenuAnchor', ->
@@ -239,7 +250,7 @@ The the word the caret is in will be passed to `autocomplete` and replaced if a
 						toComplete = autocomplete.value.substring lastSpace + 1
 						nextSpace = toComplete.indexOf ' '
 						if nextSpace is -1
-							afterComplete = '';
+							afterComplete = ''
 						else
 							afterComplete = toComplete.substring nextSpace + 1
 							toComplete = toComplete.substring 0, nextSpace
@@ -384,6 +395,68 @@ Toggle checkboxes.
 				else
 					$('.timsChatMessageContainer').removeClass 'markEnabled'
 
+Show invite dialog.
+
+			$('#timsChatInvite').click (event) ->
+					do event.preventDefault
+					
+					new WCF.Action.Proxy
+						autoSend: true
+						data:
+							actionName: 'prepareInvite'
+							className: 'chat\\data\\user\\UserAction'
+						success: (data) ->
+							$('<div id="timsChatInviteDialog"></div>').appendTo 'body' unless $.wcfIsset 'timsChatInviteDialog'
+							
+							timsChatInviteDialog = $ '#timsChatInviteDialog'
+							
+							# Remove old event listeners
+							do timsChatInviteDialog.find('#userInviteDialogUsernameInput').off().remove
+							
+							timsChatInviteDialog.html v.userInviteDialogTemplate.fetch
+								users: data.returnValues.users
+								
+							new WCF.Search.User '#userInviteDialogUsernameInput', (user) ->
+								if $.wcfIsset "userInviteDialogUserID-#{user.objectID}"
+									$("#userInviteDialogUserID-#{user.objectID}").prop 'checked', true
+								else
+									$('#userInviteDialogUserList').append v.userInviteDialogUserListEntryTemplate.fetch
+										user: user
+										
+								$('#userInviteDialogUsernameInput').val ""
+							, false, [ WCF.User.username ], false
+							
+							$('#userInviteDialogFormSubmit').on 'click', (event) ->
+								checked = $ '#userInviteDialogUserList input[type=checkbox]:checked, #userInviteDialogFollowingList input[type=checkbox]:checked'
+								inviteUserList = [ ]
+								
+								checked.each (k, v) -> inviteUserList.push do $(v).val
+								
+								if inviteUserList.length
+									new WCF.Action.Proxy
+										autoSend: true
+										data:
+											actionName: 'invite'
+											className: 'chat\\data\\user\\UserAction'
+											parameters:
+												recipients: inviteUserList
+										success: (data) ->
+											do new WCF.System.Notification(WCF.Language.get 'wcf.global.success').show
+											
+										failure: (data) ->
+											return true unless (data?.returnValues?.errorType?) or (data?.message?)
+											
+											$("""<div class="ajaxDebugMessage">#{(data?.returnValues?.errorType) ? data.message}</div>""").wcfDialog title: WCF.Language.get 'wcf.global.error.title'
+											
+											return false
+											
+								$('#timsChatInviteDialog').wcfDialog 'close'
+								
+							timsChatInviteDialog.wcfDialog
+								title: WCF.Language.get 'chat.global.invite'
+								onShow: ->  do $('#userInviteDialogUsernameInput').focus
+									
+
 Hide topic container.
 
 			$('#timsChatTopicCloser').on 'click', ->
@@ -1056,7 +1129,7 @@ Joins a room.
 					
 					$('.timsChatMessage').addClass 'unloaded'
 					
-					document.title = v.titleTemplate.fetch roomList.active
+					document.title = v.titleTemplate.fetch getRoomList().active
 					handleMessages roomList.active.messages
 					do getMessages
 					do refreshRoomList
@@ -1191,6 +1264,8 @@ Remove the given callback from the given event.
 			
 			true
 			
+		getRoomList = -> JSON.parse JSON.stringify roomList
+				
 The following code handles attachment uploads
 
 Enable attachment code if `WCF.Attachment.Upload` is defined
@@ -1416,8 +1491,8 @@ Return a copy of the object containing the IDs of the marked messages
 
 			getMarkedMessages: -> JSON.parse JSON.stringify markedMessages
 			getUserList: -> JSON.parse JSON.stringify userList
-			getRoomList: -> JSON.parse JSON.stringify roomList
-			
+			getRoomList: getRoomList
+				
 			refreshRoomList: refreshRoomList
 			insertText: insertText
 			freeTheFish: freeTheFish
diff --git a/file/lib/data/user/UserAction.class.php b/file/lib/data/user/UserAction.class.php
index 3201aa5..938dba0 100644
--- a/file/lib/data/user/UserAction.class.php
+++ b/file/lib/data/user/UserAction.class.php
@@ -42,4 +42,86 @@ public function updateOption() {
 		));
 		$userAction->executeAction();
 	}
+	
+	/**
+	 * Validates invite preparation.
+	 */
+	public function validatePrepareInvite() {
+		WCF::getSession()->checkPermissions(array('user.chat.canInvite'));
+		
+		if (!WCF::getUser()->chatRoomID) throw new \wcf\system\exception\PermissionDeniedException();
+		
+		$room = \chat\data\room\RoomCache::getInstance()->getRoom(WCF::getUser()->chatRoomID);
+		
+		if ($room === null) throw new \wcf\system\exception\IllegalLinkException();
+		if (!$room->canEnter()) throw new \wcf\system\exception\PermissionDeniedException();
+	}
+	
+	/**
+	 * Prepares invites.
+	 */
+	public function prepareInvite() {
+		$followingList = new \wcf\data\user\follow\UserFollowingList();
+		$followingList->getConditionBuilder()->add('user_follow.userID = ?', array(WCF::getUser()->userID));
+		$followingList->readObjects();
+		$users = $followingList->getObjects();
+		
+		$json = array();
+		foreach ($users as $user) {
+			$json[] = array(
+				'userID' => $user->userID,
+				'username' => $user->username
+			);
+		}
+		
+		return array(
+			'users' => $json
+		);
+	}
+	
+	/**
+	 * Validates invites.
+	 */
+	public function validateInvite() {
+		WCF::getSession()->checkPermissions(array('user.chat.canInvite'));
+		
+		if (!WCF::getUser()->chatRoomID) throw new \wcf\system\exception\PermissionDeniedException();
+		
+		$this->room = \chat\data\room\RoomCache::getInstance()->getRoom(WCF::getUser()->chatRoomID);
+		
+		if ($this->room === null) throw new \wcf\system\exception\IllegalLinkException();
+		if (!$this->room->canEnter()) throw new \wcf\system\exception\PermissionDeniedException();
+		
+		if (!isset($this->parameters['recipients'])) throw new \wcf\system\exception\UserInputException("recipients");
+		
+		$this->parameters['recipients'] = \wcf\util\ArrayUtil::toIntegerArray($this->parameters['recipients']);
+		
+		$ignoredByList = new \wcf\data\user\ignore\UserIgnoreList();
+		$ignoredByList->getConditionBuilder()->add('user_ignore.ignoreUserID = ?', array(WCF::getUser()->userID));
+		$ignoredByList->getConditionBuilder()->add('user_ignore.userID IN (?)', array($this->parameters['recipients']));
+		
+		if (!empty($ignoredByList->sqlSelects)) $ignoredByList->sqlSelects .= ',';
+		$ignoredByList->sqlSelects .= "user_ignore.ignoreID";
+		$ignoredByList->sqlSelects .= ", user_table.username";
+		$ignoredByList->sqlJoins .= " LEFT JOIN wcf".WCF_N."_user user_table ON (user_table.userID = user_ignore.userID)";
+		
+		$ignoredByList->readObjects();
+		$ignoredByUsers = $ignoredByList->getObjects();
+		
+		if (!empty($ignoredByUsers)) {
+			$usernames = array();
+			foreach ($ignoredByUsers as $user) {
+				$usernames[] = $user->username;
+			}
+			
+			throw new \wcf\system\exception\UserInputException("recipients", WCF::getLanguage()->getDynamicVariable('chat.error.invite.ignored', array('users' => $ignoredByUsers, 'usernames' => $usernames)));
+		}
+	}
+	
+	/**
+	 * Invites users.
+	 */
+	public function invite() {
+		\wcf\system\user\notification\UserNotificationHandler::getInstance()->fireEvent('invited', 'be.bastelstu.chat.room', new \chat\system\user\notification\object\RoomUserNotificationObject($this->room), $this->parameters['recipients'], array('userID' => WCF::getUser()->userID));
+	}
 }
diff --git a/file/lib/system/user/notification/event/InvitedUserNotificationEvent.class.php b/file/lib/system/user/notification/event/InvitedUserNotificationEvent.class.php
new file mode 100644
index 0000000..c76d2ff
--- /dev/null
+++ b/file/lib/system/user/notification/event/InvitedUserNotificationEvent.class.php
@@ -0,0 +1,75 @@
+<?php
+namespace chat\system\user\notification\event;
+
+/**
+ * 
+ * 
+ * @author	Tim Düsterhus
+ * @copyright	2010-2014 Tim Düsterhus
+ * @license	Creative Commons Attribution-NonCommercial-ShareAlike <http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode>
+ * @package	be.bastelstu.chat
+ * @subpackage	system.user.notification.event
+ */
+class InvitedUserNotificationEvent extends \wcf\system\user\notification\event\AbstractUserNotificationEvent {
+	/**
+	 * @see	\wcf\system\user\notification\event\AbstractUserNotificationEvent::$stackable
+	 */
+	protected $stackable = false;
+
+	/**
+	 * @see	\wcf\system\user\notification\event\IUserNotificationEvent::getAuthorID()
+	 */
+	public function getAuthorID() {
+		return $this->getAuthor()->userID;
+	}
+	
+	/**
+	 * @see	\wcf\system\user\notification\event\IUserNotificationEvent::getAuthor()
+	 */
+	public function getAuthor() {
+		// TODO: caching
+		return new \wcf\data\user\UserProfile(new \wcf\data\user\User($this->additionalData['userID']));
+	}
+	
+	/**
+	 * @see	\wcf\system\user\notification\event\IUserNotificationEvent::getTitle()
+	 */
+	public function getTitle() {
+		return $this->getLanguage()->get('chat.notification.invited.title');
+	}
+	
+	/**
+	 * @see	\wcf\system\user\notification\event\IUserNotificationEvent::getMessage()
+	 */
+	public function getMessage() {
+		return $this->getLanguage()->getDynamicVariable('chat.notification.invited.message', array(
+			'userNotificationObject' => $this->userNotificationObject,
+			'author' => $this->author
+		));
+	}
+
+	/**
+	 * @see	\wcf\system\user\notification\event\IUserNotificationEvent::getLink()
+	 */
+	public function getLink() {
+		return \wcf\system\request\LinkHandler::getInstance()->getLink('Chat', array(
+			'application' => 'chat',
+			'object' => $this->userNotificationObject->getDecoratedObject()
+		));
+	}
+	
+	/**
+	 * @see	\wcf\system\user\notification\event\IUserNotificationEvent::supportsEmailNotification()
+	 */
+	public function supportsEmailNotification() {
+		return false;
+	}
+	
+	/**
+	 * @see	\wcf\system\user\notification\event\IUserNotificationEvent::checkAccess()
+	 */
+	public function checkAccess() {
+		// TODO
+		return true;
+	}
+}
diff --git a/file/lib/system/user/notification/object/RoomUserNotificationObject.class.php b/file/lib/system/user/notification/object/RoomUserNotificationObject.class.php
new file mode 100644
index 0000000..18d95ec
--- /dev/null
+++ b/file/lib/system/user/notification/object/RoomUserNotificationObject.class.php
@@ -0,0 +1,50 @@
+<?php
+namespace chat\system\user\notification\object;
+
+/**
+ * 
+ * 
+ * @author	Tim Düsterhus
+ * @copyright	2010-2014 Tim Düsterhus
+ * @license	Creative Commons Attribution-NonCommercial-ShareAlike <http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode>
+ * @package	be.bastelstu.chat
+ * @subpackage	system.user.notification.object
+ */
+class RoomUserNotificationObject extends \wcf\data\DatabaseObjectDecorator implements \wcf\system\user\notification\object\IUserNotificationObject {
+	/**
+	 * @see	\wcf\data\DatabaseObjectDecorator::$baseClass
+	 */
+	protected static $baseClass = 'chat\data\room\Room';
+	
+	/**
+	 * @see	\wcf\system\user\notification\object\IUserNotificationObject::getObjectID()
+	 */
+	public function getObjectID() {
+		return $this->roomID;
+	}
+	
+	/**
+	 * @see	\wcf\system\user\notification\object\IUserNotificationObject::getTitle()
+	 */
+	public function getTitle() {
+		return $this->getDecoratedObject()->getTitle();
+	}
+	
+	/**
+	 * @see	\wcf\system\user\notification\object\IUserNotificationObject::getURL()
+	 */
+	public function getURL() {
+		return \wcf\system\request\LinkHandler::getInstance()->getLink('Chat', array(
+			'application' => 'chat',
+			'object' => $this->userNotificationObject->getRoom(),
+		));
+	}
+	
+	/**
+	 * @see	\wcf\system\user\notification\object\IUserNotificationObject::getAuthorID()
+	 */
+	public function getAuthorID() {
+		// this value is ignored
+		return PHP_INT_MAX;
+	}
+}
diff --git a/file/lib/system/user/notification/object/type/RoomUserNotificationObjectType.class.php b/file/lib/system/user/notification/object/type/RoomUserNotificationObjectType.class.php
new file mode 100644
index 0000000..5a0eed1
--- /dev/null
+++ b/file/lib/system/user/notification/object/type/RoomUserNotificationObjectType.class.php
@@ -0,0 +1,28 @@
+<?php
+namespace chat\system\user\notification\object\type;
+
+/**
+ * 
+ * 
+ * @author	Tim Düsterhus
+ * @copyright	2010-2014 Tim Düsterhus
+ * @license	Creative Commons Attribution-NonCommercial-ShareAlike <http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode>
+ * @package	be.bastelstu.chat
+ * @subpackage	system.user.notification.object.type
+ */
+class RoomUserNotificationObjectType extends \wcf\system\user\notification\object\type\AbstractUserNotificationObjectType {
+	/**
+	 * @see	\wcf\system\user\notification\object\type\AbstractUserNotificationObjectType::$decoratorClassName
+	 */
+	protected static $decoratorClassName = 'chat\system\user\notification\object\RoomUserNotificationObject';
+	
+	/**
+	 * @see	\wcf\system\user\notification\object\type\AbstractUserNotificationObjectType::$objectClassName
+	 */
+	protected static $objectClassName = 'chat\data\room\Room';
+	
+	/**
+	 * @see	\wcf\system\user\notification\object\type\AbstractUserNotificationObjectType::$objectListClassName
+	 */
+	protected static $objectListClassName = 'chat\data\room\RoomList';
+}
diff --git a/language/de.xml b/language/de.xml
index e2597a8..1547589 100644
--- a/language/de.xml
+++ b/language/de.xml
@@ -39,6 +39,11 @@
 		<item name="chat.acp.menu.link.suspension.list"><![CDATA[Sanktionen auflisten]]></item>
 	</category>
 	
+	<category name="chat.notification">
+		<item name="chat.notification.invited.title"><![CDATA[Jemand möchte mit Ihnen chatten!]]></item>
+		<item name="chat.notification.invited.message"><![CDATA[„{$author->username}“ möchte mit Ihnen im Chatraum „{$userNotificationObject->getTitle()}“ chatten!]]></item>
+	</category>
+	
 	<category name="wcf.acl.option">
 		<item name="wcf.acl.option.category.be.bastelstu.chat.room.user"><![CDATA[Benutzerrechte]]></item>
 		<item name="wcf.acl.option.category.be.bastelstu.chat.room.mod"><![CDATA[Moderative Rechte]]></item>
@@ -55,6 +60,7 @@
 		<item name="wcf.acp.group.option.user.chat.canEnter"><![CDATA[Kann Chat betreten]]></item>
 		<item name="wcf.acp.group.option.user.chat.canWrite"><![CDATA[Kann im Chat schreiben]]></item>
 		<item name="wcf.acp.group.option.user.chat.canTempRoom"><![CDATA[Kann temporäre Räume erstellen]]></item>
+		<item name="wcf.acp.group.option.user.chat.canInvite"><![CDATA[Kann Benutzer zum Chatten einladen]]></item>
 		<item name="wcf.acp.group.option.user.chat.allowedBBCodes"><![CDATA[Erlaubte BBCodes]]></item>
 		<item name="wcf.acp.group.option.user.chat.allowedBBCodes.description"><![CDATA[Die hier ausgewählten BBCodes dürfen von Mitgliedern dieser Benutzergruppe verwendet werden.]]></item>
 		<item name="wcf.acp.group.option.user.chat.canUploadAttachment"><![CDATA[Kann Dateien anhängen]]></item>
@@ -148,6 +154,7 @@ Probieren Sie, den Chat neu zu laden<!-- , bei Risiken und Nebenwirkungen fragen
 		<item name="chat.error.reload"><![CDATA[Neu laden]]></item>
 		
 		<item name="chat.error.whisper.ignoresYou"><![CDATA[„{$user}“ hat Sie blockiert.]]></item>
+		<item name="chat.error.invite.ignored"><![CDATA[Die folgenden Nutzer haben Sie blockiert: {implode from=$usernames item=username}{$username}{/implode}]]></item>
 	</category>
 	
 	<category name="chat.global">
@@ -163,6 +170,9 @@ Probieren Sie, den Chat neu zu laden<!-- , bei Risiken und Nebenwirkungen fragen
 		
 		<item name="chat.global.error.join.full"><![CDATA[Der Raum „{$room}“ hat die maximale Anzahl an Mitgliedern erreicht. Bitte versuchen Sie es später erneut.]]></item>
 		
+		<item name="chat.global.invite"><![CDATA[Benutzer einladen]]></item>
+		<item name="chat.global.invite.noFollowing"><![CDATA[Sie folgen niemandem, verwenden Sie bitte die Suche.]]></item>
+		
 		<item name="chat.global.copyright"><![CDATA[<a href="http://tims.bastelstu.be"{if EXTERNAL_LINK_TARGET_BLANK} target="_blank"{/if}><strong>Tims Chat{if SHOW_VERSION_NUMBER} {PACKAGE_VERSION}{/if}</strong>, entwickelt in <strong>Tims Bastelstu.be</strong></a>]]></item>
 		<item name="chat.global.copyright.leader"><![CDATA[Projektleiter]]></item>
 		<item name="chat.global.copyright.developer"><![CDATA[Entwickler]]></item>
@@ -255,5 +265,6 @@ Probieren Sie, den Chat neu zu laden<!-- , bei Risiken und Nebenwirkungen fragen
 	
 	<category name="chat.user">
 		<item name="chat.user.usersOnline.location.ChatPage"><![CDATA[<a href="{link controller='Chat' application='chat' object=$room}{/link}">Chatraum „{$room}“</a>]]></item>
+		<item name="chat.user.search"><![CDATA[Benutzer suchen]]></item>
 	</category>
 </language>
diff --git a/language/en.xml b/language/en.xml
index f701a1f..01f6e67 100644
--- a/language/en.xml
+++ b/language/en.xml
@@ -39,6 +39,11 @@
 		<item name="chat.acp.menu.link.suspension.list"><![CDATA[List Suspensions]]></item>
 	</category>
 	
+	<category name="chat.notification">
+		<item name="chat.notification.invited.title"><![CDATA[Someone wants to chat with you!]]></item>
+		<item name="chat.notification.invited.message"><![CDATA[“{$author->username}” wants to chat with you in “{$userNotificationObject->getTitle()}”!]]></item>
+	</category>
+	
 	<category name="wcf.acl.option">
 		<item name="wcf.acl.option.category.be.bastelstu.chat.room.user"><![CDATA[User Permissions]]></item>
 		<item name="wcf.acl.option.category.be.bastelstu.chat.room.mod"><![CDATA[Moderator Permissions]]></item>
@@ -55,6 +60,7 @@
 		<item name="wcf.acp.group.option.user.chat.canEnter"><![CDATA[Can enter chat]]></item>
 		<item name="wcf.acp.group.option.user.chat.canWrite"><![CDATA[Can write messages]]></item>
 		<item name="wcf.acp.group.option.user.chat.canTempRoom"><![CDATA[Can create temporary rooms]]></item>
+		<item name="wcf.acp.group.option.user.chat.canInvite"><![CDATA[Can invite users to chat]]></item>
 		<item name="wcf.acp.group.option.user.chat.allowedBBCodes"><![CDATA[Allowed BBCodes]]></item>
 		<item name="wcf.acp.group.option.user.chat.allowedBBCodes.description"><![CDATA[Selected BBCodes may be used by members of this group.]]></item>
 		<item name="wcf.acp.group.option.user.chat.canUploadAttachment"><![CDATA[Can upload attachments]]></item>
@@ -148,6 +154,7 @@ Please try to reload the chat.]]></item>
 		<item name="chat.error.reload"><![CDATA[Reload]]></item>
 		
 		<item name="chat.error.whisper.ignoresYou"><![CDATA[“{$user}” has blocked you.]]></item>
+		<item name="chat.error.invite.ignored"><![CDATA[The following users have blocked you: {implode from=$usernames item=username}{$username}{/implode}]]></item>
 	</category>
 	
 	<category name="chat.global">
@@ -162,6 +169,9 @@ Please try to reload the chat.]]></item>
 		<item name="chat.global.users"><![CDATA[Users]]></item>
 		
 		<item name="chat.global.error.join.full"><![CDATA[The room “{$room}” has reached the maximum amount of concurrent chatters. Please try again later.]]></item>
+
+		<item name="chat.global.invite"><![CDATA[Invite users]]></item>
+		<item name="chat.global.invite.noFollowing"><![CDATA[You do not follow anybody, please use the search function instead.]]></item>
 		
 		<item name="chat.global.copyright"><![CDATA[<a href="http://tims.bastelstu.be"{if EXTERNAL_LINK_TARGET_BLANK} target="_blank"{/if}><strong>Tim’s Chat{if SHOW_VERSION_NUMBER} {PACKAGE_VERSION}{/if}</strong>, developed in <strong>Tim’s Bastelstu.be</strong></a>]]></item>
 		<item name="chat.global.copyright.leader"><![CDATA[Project Lead]]></item>
@@ -255,5 +265,6 @@ Please try to reload the chat.]]></item>
 	
 	<category name="chat.user">
 		<item name="chat.user.usersOnline.location.ChatPage"><![CDATA[<a href="{link controller='Chat' application='chat' object=$room}{/link}">Chatroom “{$room}”</a>]]></item>
+		<item name="chat.user.search"><![CDATA[Search for users]]></item>
 	</category>
 </language>
diff --git a/objectType.xml b/objectType.xml
index e920f9c..4d5ffca 100644
--- a/objectType.xml
+++ b/objectType.xml
@@ -27,5 +27,11 @@
 			<definitionname>com.woltlab.wcf.attachment.objectType</definitionname>
 			<classname>chat\system\attachment\MessageAttachmentObjectType</classname>
 		</type>
+		<type>
+			<name>be.bastelstu.chat.room</name>
+			<definitionname>com.woltlab.wcf.notification.objectType</definitionname>
+			<classname>chat\system\user\notification\object\type\RoomUserNotificationObjectType</classname>
+			<category>be.bastelstu.chat</category>
+		</type>
 	</import>
 </data>
diff --git a/package.xml b/package.xml
index 39a2d94..a132ff7 100644
--- a/package.xml
+++ b/package.xml
@@ -29,6 +29,7 @@
 		<instruction type="acpTemplate">acptemplate.tar</instruction>
 		<instruction type="sql">install.sql</instruction>
 		<instruction type="objectType">objectType.xml</instruction>
+		<instruction type="userNotificationEvent">userNotificationEvent.xml</instruction>
 		<instruction type="option">option.xml</instruction>
 		<instruction type="templateListener">templateListener.xml</instruction>
 		<instruction type="pageMenu">pageMenu.xml</instruction>
diff --git a/template/chat.tpl b/template/chat.tpl
index 39ed1a7..a19c90e 100644
--- a/template/chat.tpl
+++ b/template/chat.tpl
@@ -22,6 +22,7 @@
 							'chat.global.query': '{lang}chat.global.query{/lang}',
 							'chat.global.smilies': '{lang}chat.global.smilies{/lang}',
 							'chat.global.whisper': '{lang}chat.global.whisper{/lang}',
+							'chat.global.invite': '{lang}chat.global.invite{/lang}',
 							'chat.error.duplicateTab': '{lang}chat.error.duplicateTab{/lang}',
 							'chat.error.join': '{lang}chat.error.join{/lang}',
 							'chat.error.onMessageLoad': '{@"chat.error.onMessageLoad"|language|encodeJS}',
@@ -56,6 +57,7 @@
 						{capture assign='messageTemplate'}{include application='chat' file='message'}{/capture}
 						{capture assign='userTemplate'}{include application='chat' file='userListUser'}{/capture}
 						{capture assign='userMenuTemplate'}{include application='chat' file='userListUserMenu'}{/capture}
+						{capture assign='userInviteDialogTemplate'}{include application='chat' file='userInviteDialog'}{/capture}
 						
 						var config = {
 							reloadTime: {@CHAT_RELOADTIME},
@@ -74,7 +76,8 @@
 							new WCF.Template('{literal}{if $newMessageCount}({#$newMessageCount}) {/if}{$title} - {/literal}{"chat.global.title"|language|encodeJS} - {PAGE_TITLE|language|encodeJS}'),
 							new WCF.Template('{@$messageTemplate|encodeJS}'),
 							new WCF.Template('{@$userTemplate|encodeJS}'),
-							new WCF.Template('{@$userMenuTemplate|encodeJS}')
+							new WCF.Template('{@$userMenuTemplate|encodeJS}'),
+							new WCF.Template('{@$userInviteDialogTemplate|encodeJS}')
 						);
 						
 						{event name='afterInit'}
@@ -198,6 +201,15 @@
 							</li>
 						{/if}
 						
+						{if $__wcf->session->getPermission('user.chat.canInvite')}
+							<li>
+								<a id="timsChatInvite" class="button jsTooltip" title="{lang}chat.global.invite{/lang}">
+									<span class="icon icon16 icon-user"></span>
+									<span class="invisible">{lang}chat.global.invite{/lang}</span>
+								</a>
+							</li>
+						{/if}
+						
 						<li>
 							<a id="timsChatClear" class="button jsTooltip" title="{lang}chat.global.clear{/lang}">
 								<span class="icon icon16 icon-remove"></span>
diff --git a/template/userInviteDialog.tpl b/template/userInviteDialog.tpl
new file mode 100644
index 0000000..e373984
--- /dev/null
+++ b/template/userInviteDialog.tpl
@@ -0,0 +1,39 @@
+{literal}
+	<div id="userInviteDialogContainer">
+		<fieldset>
+			<legend>{lang}wcf.user.access.following{/lang}</legend>
+			
+			{if $users.length === 0}
+				<p class="info">{lang}chat.global.invite.noFollowing{/lang}</p>
+			{else}
+				<div id="userInviteDialogFollowingList">
+					<dl>
+						{foreach from=$users item="user"}
+							<dt></dt>
+							<dd><label><input type="checkbox" id="userInviteDialogUserID-{$user.userID}" value="{$user.userID}" /> {$user.username}</label></dd>
+						{/foreach}
+					</dl>
+				</div>
+			{/if}
+		</fieldset>
+		
+		<fieldset>
+			<legend>{lang}chat.user.search{/lang}</legend>
+			
+			<div id="userInviteDialogUserList"></div>
+			
+			<dl class="marginTop">
+				<dt><label for="username">{lang}wcf.user.username{/lang}</label></dt>
+				<dd>
+					<span>
+						<input autocomplete="off" id="userInviteDialogUsernameInput" name="username" class="medium" value="" type="text" />
+					</span>
+				</dd>
+			</dl>
+			
+			<div class="formSubmit">
+				<input id="userInviteDialogFormSubmit" type="submit" value="{lang}wcf.global.button.submit{/lang}" />
+			</div>
+		</fieldset>
+	</div>
+{/literal}
\ No newline at end of file
diff --git a/userGroupOption.xml b/userGroupOption.xml
index 4d41e94..57e4d37 100644
--- a/userGroupOption.xml
+++ b/userGroupOption.xml
@@ -35,6 +35,13 @@
 				<admindefaultvalue>1</admindefaultvalue>
 				<usersonly>1</usersonly>
 			</option>
+			<option name="user.chat.canInvite">
+				<categoryname>user.chat</categoryname>
+				<optiontype>boolean</optiontype>
+				<defaultvalue>0</defaultvalue>
+				<admindefaultvalue>1</admindefaultvalue>
+				<usersonly>1</usersonly>
+			</option>
 			<option name="user.chat.allowedBBCodes">
 				<categoryname>user.chat</categoryname>
 				<optiontype>BBCodeSelect</optiontype>
diff --git a/userNotificationEvent.xml b/userNotificationEvent.xml
new file mode 100644
index 0000000..2427056
--- /dev/null
+++ b/userNotificationEvent.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<data xmlns="http://www.woltlab.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.woltlab.com http://www.woltlab.com/XSD/userNotificationEvent.xsd">
+	<import>
+		<event>
+			<name>invited</name>
+			<objecttype>be.bastelstu.chat.room</objecttype>
+			<classname>chat\system\user\notification\event\InvitedUserNotificationEvent</classname>
+			<preset>1</preset>
+			<options>module_chat</options>
+		</event>
+	</import>
+</data>