diff --git a/homeassistant/components/api.py b/homeassistant/components/api.py
index 4c0e9c315f1..2bbb9516517 100644
--- a/homeassistant/components/api.py
+++ b/homeassistant/components/api.py
@@ -12,7 +12,7 @@ from homeassistant.helpers import TrackStates
 import homeassistant.remote as rem
 from homeassistant.const import (
     URL_API, URL_API_STATES, URL_API_EVENTS, URL_API_SERVICES,
-    URL_API_EVENT_FORWARD, URL_API_STATES_ENTITY)
+    URL_API_EVENT_FORWARD, URL_API_STATES_ENTITY, URL_API_COMPONENTS)
 
 HTTP_OK = 200
 HTTP_CREATED = 201
@@ -73,6 +73,10 @@ def setup(hass, config):
     hass.http.register_path(
         'DELETE', URL_API_EVENT_FORWARD, _handle_delete_api_event_forward)
 
+    # /components
+    hass.http.register_path(
+        'GET', URL_API_COMPONENTS, _handle_get_api_components)
+
     return True
 
 
@@ -247,3 +251,9 @@ def _handle_delete_api_event_forward(handler, path_match, data):
         handler.server.event_forwarder.disconnect(api)
 
     handler.write_json_message("Event forwarding cancelled.")
+
+
+def _handle_get_api_components(handler, path_match, data):
+    """ Returns all the loaded components. """
+
+    handler.write_json(handler.server.hass.components)
diff --git a/homeassistant/components/frontend/www_static/polymer/home-assistant-api.html b/homeassistant/components/frontend/www_static/polymer/home-assistant-api.html
index 901b0e444ac..11f8a7959c5 100644
--- a/homeassistant/components/frontend/www_static/polymer/home-assistant-api.html
+++ b/homeassistant/components/frontend/www_static/polymer/home-assistant-api.html
@@ -179,6 +179,10 @@
       return found.length > 0;
     },
 
+    hasComponent: function(component) {
+      return this.components.indexOf(component) !== -1;
+    },
+
     getCustomGroups: function() {
       return this.states.filter(function(state) { return state.isCustomGroup;});
     },
@@ -267,6 +271,7 @@
       this.fetchStates();
       this.fetchServices();
       this.fetchEvents();
+      this.fetchComponents();
     },
 
     fetchState: function(entityId) {
@@ -322,6 +327,22 @@
         "GET", "services", null, successServicesUpdated.bind(this), onError);
     },
 
+    fetchComponents: function(onSuccess, onError) {
+      var successComponentsUpdated = function(components) {
+        this.components = components;
+
+        this.fire('components-updated');
+
+        if(onSuccess) {
+          onSuccess(this.components);
+        }
+      };
+
+      this.call_api(
+        "GET", "components", null,
+        successComponentsUpdated.bind(this), onError);
+    },
+
     turn_on: function(entity_id, options) {
       this.call_service(
         "homeassistant", "turn_on", {entity_id: entity_id}, options);
diff --git a/homeassistant/components/frontend/www_static/polymer/splash-login.html b/homeassistant/components/frontend/www_static/polymer/splash-login.html
index 9062d2a966d..2dd7c9f0d47 100644
--- a/homeassistant/components/frontend/www_static/polymer/splash-login.html
+++ b/homeassistant/components/frontend/www_static/polymer/splash-login.html
@@ -127,8 +127,9 @@
       this.$.hideKeyboardOnFocus.focus();
 
       var passwordValid = function(result) {
-        this.$.validatemessage.innerHTML = "Loading data...";
+        this.$.validatemessage.innerHTML = "Loading data…";
         this.api.fetchEvents();
+        this.api.fetchComponents();
 
         this.api.fetchStates(function() {
           this.state = "valid_auth";
diff --git a/homeassistant/const.py b/homeassistant/const.py
index 31c575b96c7..d4ca0009d83 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -99,3 +99,4 @@ URL_API_EVENTS_EVENT = "/api/events/{}"
 URL_API_SERVICES = "/api/services"
 URL_API_SERVICES_SERVICE = "/api/services/{}/{}"
 URL_API_EVENT_FORWARD = "/api/event_forwarding"
+URL_API_COMPONENTS = "/api/components"