diff --git a/slixmpp/plugins/__init__.py b/slixmpp/plugins/__init__.py
index ab8f336d..df1e3150 100644
--- a/slixmpp/plugins/__init__.py
+++ b/slixmpp/plugins/__init__.py
@@ -87,6 +87,7 @@ __all__ = [
     'xep_0332',  # HTTP Over XMPP Transport
     'xep_0369',  # MIX-CORE
     'xep_0377',  # Spam reporting
+    'xep_0404',  # MIX-Anon
     'xep_0405',  # MIX-PAM
     'xep_0421',  # Anonymous unique occupant identifiers for MUCs
     'xep_0444',  # Message Reactions
diff --git a/slixmpp/plugins/xep_0404/__init__.py b/slixmpp/plugins/xep_0404/__init__.py
new file mode 100644
index 00000000..21dd6814
--- /dev/null
+++ b/slixmpp/plugins/xep_0404/__init__.py
@@ -0,0 +1,13 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2020 Mathieu Pasquet <mathieui@mathieui.net>
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.plugins.base import register_plugin
+from slixmpp.plugins.xep_0404.stanza import Participant
+from slixmpp.plugins.xep_0404.mix_anon import XEP_0404
+
+register_plugin(XEP_0404)
diff --git a/slixmpp/plugins/xep_0404/mix_anon.py b/slixmpp/plugins/xep_0404/mix_anon.py
new file mode 100644
index 00000000..d8c42381
--- /dev/null
+++ b/slixmpp/plugins/xep_0404/mix_anon.py
@@ -0,0 +1,101 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2020 Mathieu Pasquet <mathieui@mathieui.net>
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+from typing import (
+    Dict,
+    Optional,
+    Set,
+    Tuple,
+)
+
+from slixmpp import JID, Message, Iq
+from slixmpp.exceptions import IqError, IqTimeout
+from slixmpp.plugins import BasePlugin
+from slixmpp.xmlstream import register_stanza_plugin
+from slixmpp.xmlstream.matcher import MatchXPath
+from slixmpp.xmlstream.handler import Callback
+from slixmpp.plugins.xep_0404 import stanza
+from slixmpp.plugins.xep_0004.stanza import Form
+
+
+NODES = [
+    'urn:xmpp:mix:nodes:jidmap',
+]
+
+
+class XEP_0404(BasePlugin):
+    '''XEP-0404: MIX JID Hidden Channels'''
+
+    name = 'xep_0404'
+    description = 'MIX-ANON'
+    dependencies = {'xep_0369'}
+    stanza = stanza
+    namespace = stanza.NS
+
+    def plugin_init(self) -> None:
+        stanza.register_plugins()
+
+    async def get_anon_raw(self, channel: JID, *,
+                            ifrom: Optional[JID] = None, **pubsubkwargs) -> Iq:
+        """
+        Get the jid-participant mapping result (raw).
+        :param JID channel: MIX channel JID
+        """
+        return await self.xmpp['xep_0030'].get_items(
+            channel.bare,
+            ifrom=ifrom,
+            **pubsubkwargs
+        )
+
+    async def get_anon_by_jid(self, channel: JID, *,
+                              ifrom: Optional[JID] = None, **pubsubkwargs) -> Dict[JID, str]:
+        """
+        Get the jid-participant mapping, by JID
+
+        :param JID channel: MIX channel JID
+        """
+        raw = await self.get_anon_raw(channel, ifrom=ifrom, **pubsubkwargs)
+        mapping = {}
+        for item in raw['pubsub']['items']:
+            mapping[item['anon_participant']['jid']] = item['id']
+        return mapping
+
+    async def get_anon_by_id(self, channel: JID, *,
+                             ifrom: Optional[JID] = None, **pubsubkwargs) -> Dict[str, JID]:
+        """
+        Get the jid-participant mapping, by participant id
+
+        :param JID channel: MIX channel JID
+        """
+        raw = await self.get_anon_raw(channel, ifrom=ifrom, **pubsubkwargs)
+        mapping = {}
+        for item in raw['pubsub']['items']:
+            mapping[item['id']] = item['anon_participant']['jid']
+        return mapping
+
+    async def get_preferences(self, channel: JID, *,
+                              ifrom: Optional[JID] = None, **iqkwargs) -> Form:
+        """
+        Get channel preferences with default values.
+        :param JID channel: MIX channel JID
+        """
+        iq = self.xmpp.make_iq_get(ito=channel.bare, ifrom=ifrom)
+        iq.enable('user_preference')
+        prefs_stanza = await iq.send(**iqkwargs)
+        return prefs_stanza['user_preference']['form']
+
+    async def set_preferences(self, channel: JID, form: Form, *,
+                              ifrom: Optional[JID] = None, **iqkwargs) -> Form:
+        """
+        Set channel preferences
+        :param JID channel: MIX channel JID
+        :param Form form: A 0004 form with updated preferences
+        """
+        iq = self.xmpp.make_iq_set(ito=channel.bare, ifrom=ifrom)
+        iq['user_preference']['form'] = form
+        prefs_result = await iq.send(**iqkwargs)
+        return prefs_result['user_preference']['form']
diff --git a/slixmpp/plugins/xep_0404/stanza.py b/slixmpp/plugins/xep_0404/stanza.py
new file mode 100644
index 00000000..9bb9308e
--- /dev/null
+++ b/slixmpp/plugins/xep_0404/stanza.py
@@ -0,0 +1,43 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2020 Mathieu Pasquet <mathieui@mathieui.net>
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permissio
+"""
+
+from slixmpp.xmlstream import (
+    ElementBase,
+    register_stanza_plugin,
+)
+from slixmpp import Iq
+
+from slixmpp.plugins.xep_0004.stanza import Form
+from slixmpp.plugins.xep_0060.stanza import (
+    EventItem,
+    Item,
+)
+
+NS = 'urn:xmpp:mix:anon:0'
+
+
+class Participant(ElementBase):
+    namespace = NS
+    name = 'participant'
+    plugin_attrib = 'anon_participant'
+    interfaces = {'jid'}
+    sub_interfaces = {'jid'}
+
+
+class UserPreference(ElementBase):
+    namespace = NS
+    name = 'user-preference'
+    plugin_attrib = 'user_preference'
+
+
+def register_plugins():
+    register_stanza_plugin(EventItem, Participant)
+    register_stanza_plugin(Item, Participant)
+
+    register_stanza_plugin(Iq, UserPreference)
+    register_stanza_plugin(UserPreference, Form)