diff --git a/config/dav.inc.php.sample.orig      b/config/dav.inc.php.sample  
--- a/config/dav.inc.php.sample.orig     	
+++ b/config/dav.inc.php.sample  	
@@ -113,6 +116,45 @@
         'changed'           => 'modifytimestamp',
     ),
 );
+
+// Expose all resources as an LDAP-based address book in the pricipals address book collection.
+// This enables Non-Kolab-Clients to add resources to an event.
+// Properties of this option are the same as for $config['kolabdav_ldap_directory'] entries.
+$config['kolabdav_ldap_resources']  = array(
+    'name'           => 'Global Resources',
+    'hosts'          => 'localhost',
+    'port'           => 389,
+    'use_tls'        => false,
+    'user_specific'  => false,
+    'search_base_dn' => 'ou=People,dc=example,dc=org',
+    'search_bind_dn' => 'uid=kolab-service,ou=Special Users,dc=example,dc=org',
+    'search_bind_pw' => 'Welcome2KolabSystems',
+    'search_filter'  => '(&(objectClass=inetOrgPerson)(mail=%fu))',
+    'base_dn'        => 'ou=Resources,dc=example,dc=org',
+    'bind_dn'        => 'uid=kolab-service,ou=Special Users,dc=example,dc=org',
+    'bind_pass'      => 'Welcome2KolabSystems',
+    'ldap_version'   => 3,
+    'filter'         => '(|(objectclass=groupofuniquenames)(objectclass=groupofurls)(objectclass=kolabsharedfolder))',
+    'search_fields'  => array('displayname', 'mail'),
+    'sort'           => array('displayname', 'sn', 'givenname', 'cn'),
+    'scope'          => 'sub',
+    'searchonly'     => false,  // Set to false to enable listing
+    'sizelimit'      => '1000',
+    'timelimit'      => '0',
+    'fieldmap'       => array(
+        // Internal         => LDAP
+        'name'              => 'cn',
+        'email'             => 'mail',
+        'owner'             => 'owner',
+        'description'       => 'description',
+        'attributes'        => 'kolabdescattribute',
+        'members'           => 'uniquemember',
+        // these mappings are required for owner display
+        'phone'             => 'telephoneNumber',
+        'mobile'            => 'mobile',
+    ),
+);
+
 */

 // Enable caching for LDAP directory data.
diff --git a/lib/Kolab/CardDAV/ContactsBackend.php.orig b/lib/Kolab/CardDAV/ContactsBackend.php
--- a/lib/Kolab/CardDAV/ContactsBackend.php.orig
+++ b/lib/Kolab/CardDAV/ContactsBackend.php
@@ -47,6 +47,7 @@
     );
 
     public $ldap_directory;
+    public $ldap_resources;
 
     private $sources;
     private $folders;
@@ -358,6 +359,12 @@
                 $contact = $this->ldap_directory->getContactObject($uid);
             }
         }
+        // read card data from LDAP resources
+        else if ($addressBookId == LDAPResources::DIRECTORY_NAME) {
+            if (is_object($this->ldap_resources)) {
+                $contact = $this->ldap_resources->getContactObject($uid);
+            }
+        }
         else {
             $storage = $this->get_storage_folder($addressBookId);
             $contact = $storage->get_object($uid, '*');
diff --git a/lib/Kolab/CardDAV/LDAPDirectory.php.orig b/lib/Kolab/CardDAV/LDAPDirectory.php
--- a/lib/Kolab/CardDAV/LDAPDirectory.php.orig
+++ b/lib/Kolab/CardDAV/LDAPDirectory.php
@@ -42,14 +42,14 @@
 {
     const DIRECTORY_NAME = 'ldap-directory';
 
-    private $config;
-    private $ldap;
-    private $carddavBackend;
-    private $principalUri;
-    private $addressBookInfo = array();
-    private $cache;
-    private $query;
-    private $filter;
+    protected $config;
+    protected $ldap;
+    protected $carddavBackend;
+    protected $principalUri;
+    protected $addressBookInfo = array();
+    protected $cache;
+    protected $query;
+    protected $filter;
 
     /**
      * Default constructor
diff --git a/lib/Kolab/CardDAV/LDAPResources.php b/lib/Kolab/CardDAV/LDAPResources.php
--- /dev/null
+++ b/lib/Kolab/CardDAV/LDAPResources.php
@@ -0,0 +1,67 @@
+<?php
+
+/**
+ * CardDAV Directory class providing read-only access
+ * to an LDAP-based resources address book.
+ */
+
+namespace Kolab\CardDAV;
+
+use \rcube;
+use \rcube_ldap;
+use \rcube_ldap_generic;
+use Sabre\DAV;
+use Sabre\DAVACL;
+use Sabre\CardDAV\Property;
+use Kolab\Utils\VObjectUtils;
+
+class LDAPResources extends LDAPDirectory
+{
+    const DIRECTORY_NAME = 'ldap-resources';
+
+    /**
+     * Default constructor
+     */
+    function __construct($config, $principalUri, $carddavBackend = null)
+    {
+        $this->config = $config;
+        $this->principalUri = $principalUri;
+
+        $this->addressBookInfo = array(
+            'id' => self::DIRECTORY_NAME,
+            'uri' => self::DIRECTORY_NAME,
+            '{DAV:}displayname' => $config['name'] ?: "LDAP Resources", 
+            '{urn:ietf:params:xml:ns:carddav}supported-address-data' => new Property\SupportedAddressData(),
+            'principaluri' => $principalUri,
+        );
+
+        // used for vcard serialization
+        $this->carddavBackend = $carddavBackend ?: new ContactsBackend();
+        $this->carddavBackend->ldap_resources = $this;
+
+        // initialize cache. We need a different address space from GAL
+        // so don't mix our caches
+        $rcube = rcube::get_instance();
+        if ($rcube->config->get('kolabdav_res_cache')) {
+            $this->cache = $rcube->get_cache_shared('kolabdav_res');
+
+            // expunge cache every now and then
+            if (rand(0,10) === 0) {
+                $this->cache->expunge();
+            }
+        }
+    }
+
+    /**
+     * Returns the name of the node.
+     *
+     * This is used to generate the url.
+     *
+     * @return string
+     */
+    function getName()
+    {
+        return self::DIRECTORY_NAME;
+    }
+
+}
diff --git a/lib/Kolab/CardDAV/Plugin.php.orig b/lib/Kolab/CardDAV/Plugin.php
--- a/lib/Kolab/CardDAV/Plugin.php.orig
+++ b/lib/Kolab/CardDAV/Plugin.php
@@ -67,9 +67,14 @@
      */
     public function propFindEarly(DAV\PropFind $propFind, DAV\INode $node)
     {
-        // publish global ldap address book for this principal
-        if ($node instanceof DAVACL\IPrincipal && empty($this->directories) && \rcube::get_instance()->config->get('kolabdav_ldap_directory')) {
-            $this->directories[] = self::ADDRESSBOOK_ROOT . '/' . $node->getName() . '/' . LDAPDirectory::DIRECTORY_NAME;
+        // publish global ldap address book and resources list for this principal
+        if ($node instanceof DAVACL\IPrincipal && empty($this->directories)) {
+            if (\rcube::get_instance()->config->get('kolabdav_ldap_directory')) {
+                $this->directories[] = self::ADDRESSBOOK_ROOT . '/' . $node->getName() . '/' . LDAPDirectory::DIRECTORY_NAME;
+            }
+            if (\rcube::get_instance()->config->get('kolabdav_ldap_resources')) {
+                $this->directories[] = self::ADDRESSBOOK_ROOT . '/' . $node->getName() . '/' . LDAPResources::DIRECTORY_NAME;
+            }
         }
 
         parent::propFindEarly($propFind, $node);
@@ -236,7 +241,7 @@
         }
 
         // query on LDAP node: pass along filter query
-        if ($node instanceof LDAPDirectory) {
+        if ($node instanceof LDAPDirectory || $node instanceof LDAPResources) {
             $query = new CardDAV\AddressBookQueryParser($dom);
             $query->parse();
 
diff --git a/lib/Kolab/CardDAV/UserAddressBooks.php.orig b/lib/Kolab/CardDAV/UserAddressBooks.php
--- a/lib/Kolab/CardDAV/UserAddressBooks.php.orig
+++ b/lib/Kolab/CardDAV/UserAddressBooks.php
@@ -37,6 +37,7 @@
 {
     // pseudo-singleton instance
     private $ldap_directory;
+    private $ldap_resources;
 
     /**
      * Returns a list of addressbooks
@@ -55,6 +56,10 @@
             $objs[] = $this->getLDAPDirectory();
         }
 
+        if (rcube::get_instance()->config->get('kolabdav_ldap_resources')) {
+            $objs[] = $this->getLDAPResources();
+        }
+
         return $objs;
     }
 
@@ -69,6 +74,9 @@
         if ($name == LDAPDirectory::DIRECTORY_NAME) {
             return $this->getLDAPDirectory();
         }
+        if ($name == LDAPResources::DIRECTORY_NAME) {
+            return $this->getLDAPResources();
+        }
 
         if ($addressbook = $this->carddavBackend->getAddressBookByName($name)) {
             $addressbook['principaluri'] = $this->principalUri;
@@ -93,6 +101,21 @@
         return $this->ldap_directory;
     }
 
+    /**
+     * Getter for the singleton instance of the LDAP resources
+     */
+    private function getLDAPResources()
+    {
+        if (!$this->ldap_resources) {
+            $rcube = rcube::get_instance();
+            $config = $rcube->config->get('kolabdav_ldap_resources');
+            $config['debug'] = $rcube->config->get('ldap_debug');
+            $this->ldap_resources = new LDAPResources($config, $this->principalUri, $this->carddavBackend);
+        }
+
+        return $this->ldap_resources;
+    }
+
 
     /**
      * Returns the list of properties