diff --git a/etemplate/inc/class.bo_merge.inc.php b/etemplate/inc/class.bo_merge.inc.php
index 85769cb6bd..865c47f511 100644
--- a/etemplate/inc/class.bo_merge.inc.php
+++ b/etemplate/inc/class.bo_merge.inc.php
@@ -80,6 +80,22 @@ abstract class bo_merge
 	 * Parse HTML styles into target document style, if possible
 	 */
 	protected $parse_html_styles = true;
+	
+	/**
+	 * Apps which currently support merge
+	 *
+	 * @var array $merge_apps (array appname => human-readable name)
+	 *
+	 */
+	public static $merge_apps = array(
+		'addressbook'		=> 'Addressbook',
+		'calendar'			=> 'Calendar',
+		'filemanager'		=> 'Filemanager',
+		'infolog'			=> 'Infolog',
+		'projectmanager'	=> 'Projectmanager',
+		'timesheet'			=> 'Timesheet',
+		'tracker'			=> 'Tracker',
+	);
 
 	/**
 	 * Constructor