diff --git a/dataenginemanager.cpp b/dataenginemanager.cpp
index 9bf78d43b..59098074e 100644
--- a/dataenginemanager.cpp
+++ b/dataenginemanager.cpp
@@ -165,10 +165,19 @@ void DataEngineManager::unloadEngine(const QString &name)
     }
 }
 
-QStringList DataEngineManager::listAllEngines()
+QStringList DataEngineManager::listAllEngines(const QString &parentApp)
 {
+    QString constraint;
+
+    if (parentApp.isEmpty()) {
+        constraint.append("not exist [X-KDE-ParentApp]");
+    } else {
+        constraint.append("[X-KDE-ParentApp] == '").append(parentApp).append("'");
+    }
+
+    KService::List offers = KServiceTypeTrader::self()->query("Plasma/DataEngine", constraint);
+
     QStringList engines;
-    KService::List offers = KServiceTypeTrader::self()->query("Plasma/DataEngine");
     foreach (const KService::Ptr &service, offers) {
         QString name = service->property("X-KDE-PluginInfo-Name").toString();
         if (!name.isEmpty()) {
diff --git a/dataenginemanager.h b/dataenginemanager.h
index 3519cc510..56dc5ba7b 100644
--- a/dataenginemanager.h
+++ b/dataenginemanager.h
@@ -72,9 +72,15 @@ class PLASMA_EXPORT DataEngineManager: public QObject
         void unloadEngine(const QString &name);
 
         /**
-         * Returns a listing of all known engines by name
+         * @return a listing of all known engines by name
+         *
+         * @param parentApp the application to filter applets on. Uses the
+         *                  X-KDE-ParentApp entry (if any) in the plugin info.
+         *                  The default value of QString() will result in a
+         *                  list containing only applets not specifically
+         *                  registered to an application.
          */
-        static QStringList listAllEngines();
+        static QStringList listAllEngines(const QString &parentApp = QString());
 
     private:
         /**