docs: Complete lists of frontend/backend impls

docs/api/backends.rst

@@ -52,5 +52,22 @@ Backend listener
 Backend implementations
 =======================
 
-* :mod:`mopidy.local`
-* :mod:`mopidy.stream`
+- `Mopidy-Beets <https://github.com/mopidy/mopidy-beets>`_
+
+- `Mopidy-GMusic <https://github.com/hechtus/mopidy-gmusic>`_
+
+- :ref:`ext-local`
+
+- `Mopidy-radio-de <https://github.com/hechtus/mopidy-radio-de>`_
+
+- `Mopidy-SomaFM <https://github.com/AlexandrePTJ/mopidy-somafm>`_
+
+- `Mopidy-SoundCloud <https://github.com/mopidy/mopidy-soundcloud>`_
+
+- `Mopidy-Spotify <https://github.com/mopidy/mopidy-spotify>`_
+
+- :ref:`ext-stream`
+
+- `Mopidy-Subsonic <https://github.com/rattboi/mopidy-subsonic>`_
+
+- `Mopidy-VKontakte <https://github.com/sibuser/mopidy-vkontakte>`_

docs/api/frontends.rst

@@ -47,5 +47,12 @@ The following requirements applies to any frontend implementation:
 Frontend implementations
 ========================
 
-* :mod:`mopidy.http`
-* :mod:`mopidy.mpd`
+- :ref:`ext-http`
+
+- :ref:`ext-mpd`
+
+- `Mopidy-MPRIS <https://github.com/mopidy/mopidy-mpris>`_
+
+- `Mopidy-Notifier <https://github.com/sauberfred/mopidy-notifier>`_
+
+- `Mopidy-Scrobbler <https://github.com/mopidy/mopidy-scrobbler>`_