diff --git a/ansible/inventory/group_vars/all.yaml b/ansible/inventory/group_vars/all.yaml
index 58c9412..9a4ea4e 100644
--- a/ansible/inventory/group_vars/all.yaml
+++ b/ansible/inventory/group_vars/all.yaml
@@ -159,6 +159,13 @@ services:
       http: "3002"
       redis: "6384"
     subuid: "101000"
+  memos:
+    domain:
+      public: "memos"
+      internal: "memos.app"
+    ports:
+      http: "3004"
+    subuid: "110000"
 
 version:
   packages:
@@ -196,3 +203,4 @@ version:
     collabora: "25.04.9.4.1"
     sure: "0.7.0-hotfix.2"
     outline: "1.7.1"
+    memos: "0.28.0"
diff --git a/ansible/playbooks/app/site.yaml b/ansible/playbooks/app/site.yaml
index b8a9bd4..367ac95 100644
--- a/ansible/playbooks/app/site.yaml
+++ b/ansible/playbooks/app/site.yaml
@@ -233,6 +233,14 @@
           tags: ["site", "outline"]
       tags: ["site", "outline"]
 
+    - name: Set memos
+      ansible.builtin.include_role:
+        name: "app"
+        tasks_from: "services/set_memos"
+        apply:
+          tags: ["site", "memos"]
+      tags: ["site", "memos"]
+
     - name: Flush handlers right now
       ansible.builtin.meta: "flush_handlers"
 
diff --git a/ansible/roles/app/handlers/main.yaml b/ansible/roles/app/handlers/main.yaml
index 26e2ed0..d492b91 100644
--- a/ansible/roles/app/handlers/main.yaml
+++ b/ansible/roles/app/handlers/main.yaml
@@ -114,3 +114,14 @@
   changed_when: false
   listen: "notification_restart_outline"
   ignore_errors: true # noqa: ignore-errors
+
+- name: Restart memos
+  ansible.builtin.systemd:
+    name: "memos.service"
+    state: "restarted"
+    enabled: true
+    scope: "user"
+    daemon_reload: true
+  changed_when: false
+  listen: "notification_restart_memos"
+  ignore_errors: true # noqa: ignore-errors
diff --git a/ansible/roles/app/tasks/services/set_memos.yaml b/ansible/roles/app/tasks/services/set_memos.yaml
new file mode 100644
index 0000000..921c6bc
--- /dev/null
+++ b/ansible/roles/app/tasks/services/set_memos.yaml
@@ -0,0 +1,73 @@
+---
+- name: Create memos directory
+  ansible.builtin.file:
+    path: "{{ node['home_path'] }}/{{ item }}"
+    state: "directory"
+    owner: "{{ services['memos']['subuid'] }}"
+    group: "svadmins"
+    mode: "0770"
+  loop:
+    - "data/containers/memos"
+    - "data/containers/memos/data"
+    - "containers/memos"
+    - "containers/memos/ssl"
+  become: true
+
+- name: Deploy root certificate
+  ansible.builtin.copy:
+    content: |
+      {{ hostvars['console']['ca']['root']['crt'] }}
+    dest: "{{ node['home_path'] }}/containers/memos/ssl/{{ root_cert_filename }}"
+    owner: "{{ services['memos']['subuid'] }}"
+    group: "svadmins"
+    mode: "0440"
+  become: true
+  notify: "notification_restart_memos"
+  no_log: true
+
+- name: Register secret value to podman secret
+  containers.podman.podman_secret:
+    name: "MEMOS_DSN"
+    data: "postgresql://memos:{{ hostvars['console']['postgresql']['password']['memos'] | urlencode | replace('/', '%2F') }}\
+        @{{ services['postgresql']['domain'] }}.{{ domain['internal'] }}/memos_db?sslmode=verify-full&\
+        sslrootcert=/etc/ssl/memos/{{ root_cert_filename }}"
+    state: "present"
+    force: true
+  notify: "notification_restart_memos"
+
+- name: Deploy memos.container file
+  ansible.builtin.template:
+    src: "{{ hostvars['console']['node']['config_path'] }}/services/containers/app/memos/memos.container.j2"
+    dest: "{{ node['home_path'] }}/.config/containers/systemd/memos.container"
+    owner: "{{ ansible_user }}"
+    group: "svadmins"
+    mode: "0644"
+  notify: "notification_restart_memos"
+
+- name: Enable memos.service
+  ansible.builtin.systemd:
+    name: "memos.service"
+    state: "started"
+    enabled: true
+    daemon_reload: true
+    scope: "user"
+
+- name: Check container archive images
+  ansible.builtin.stat:
+    path: "{{ node['home_path'] }}/archives/containers/docker.io_neosmemo_memos_{{ version['containers']['memos'] }}.tar"
+  register: container_archive_images
+
+- name: Save container archive images
+  containers.podman.podman_save:
+    image:
+      - "docker.io/neosmemo/memos:{{ version['containers']['memos'] }}"
+    dest: "{{ node['home_path'] }}/archives/containers/docker.io_neosmemo_memos_{{ version['containers']['memos'] }}.tar"
+    format: "oci-archive"
+    force: false
+  when: not container_archive_images.stat.exists
+
+- name: Fetch container archive images
+  ansible.builtin.fetch:
+    src: "{{ node['home_path'] }}/archives/containers/docker.io_neosmemo_memos_{{ version['containers']['memos'] }}.tar"
+    dest: "{{ hostvars['console']['node']['data_path'] }}/images/containers/"
+    flat: true
diff --git a/ansible/roles/infra/tasks/services/set_postgresql.yaml b/ansible/roles/infra/tasks/services/set_postgresql.yaml
index 3f75d6a..bfde8f6 100644
--- a/ansible/roles/infra/tasks/services/set_postgresql.yaml
+++ b/ansible/roles/infra/tasks/services/set_postgresql.yaml
@@ -13,6 +13,7 @@
       - "nextcloud"
       - "sure"
       - "outline"
+      - "memos"
 
 - name: Create postgresql directory
   ansible.builtin.file:
diff --git a/config/secrets/secrets.yaml b/config/secrets/secrets.yaml
index 34c8938..155936a 100644
--- a/config/secrets/secrets.yaml
+++ b/config/secrets/secrets.yaml
@@ -121,6 +121,7 @@ postgresql:
         nextcloud: ENC[AES256_GCM,data:ROsximNuWYMTZktmLJPx7W1Qol/uT+APgwoCtFO/6ZYYc3KxKvlk344eqEc=,iv:4d+MrfIHjJKAcwhvZ3g4go66uZcieuL7lngKErJd+fg=,tag:QbWOtxeCbiu62GyrE2atXg==,type:str]
         sure: ENC[AES256_GCM,data:FULJ2gjJ2gZC3s324itW+CjGRBHIP9RnOqw5TT1UaiUhb7UHAPm1na+LsZk=,iv:c0GnVZkxprJUzPPq3TCQaZvAes9QQuvDXqgVLLaiQIg=,tag:uDxy/Lkd2hNK4AWwMNMslw==,type:str]
         outline: ENC[AES256_GCM,data:0eJFCfHgS4olWXHOnUPixs4Dl5PoxJa+2H1mk3YgC4GUv+nX8gTPmzKTMVM=,iv:HGxX7aLODUc2nVLC8YXdet9qphU/wxMapWhk93YmHDM=,tag:6/2uckW/a24LgVFRH6E85Q==,type:str]
+        memos: ENC[AES256_GCM,data:BaNTnZFZH4oMTnDkgrf2/fMTkO43rc9bSsgnDWrHJ/Z6+MZdMitpIMkrMN4=,iv:JsG3B0YweZYO96MW9NmoSsIG++gFq+jRUsozwJtWl3M=,tag:orLTUiW0inOJdD4YSp4baQ==,type:str]
 #ENC[AES256_GCM,data:ODXFUxxxdQ==,iv:s9zJVx6wo6x517tbNvC+FZ0dFzqbjqeLI6rXBq72hQA=,tag:bXoV2I3LbpmQyddJrtS3Qg==,type:comment]
 #
 #
@@ -262,6 +263,14 @@ outline:
 #ENC[AES256_GCM,data:ODXFUxxxdQ==,iv:s9zJVx6wo6x517tbNvC+FZ0dFzqbjqeLI6rXBq72hQA=,tag:bXoV2I3LbpmQyddJrtS3Qg==,type:comment]
 #
 #
+#ENC[AES256_GCM,data:Fis0K+QOQwUfHItGI5U=,iv:kRmt4WhV6bBwN7Xl2xLrbxnKuLKTBC5nI9ZnQSIgIwo=,tag:whb1oOEX+fry9GS1+RlPrA==,type:comment]
+memos:
+    oidc:
+        secret: ENC[AES256_GCM,data:+rX8znej0jjXybmUjoI7DkybNkNeg15Py7bav665Uej48I5ZAZbUiKwccNo=,iv:UzcCqXxvweosRL8afhyRBB2ERm1PNs+tuxeDwL7Mcu8=,tag:+gJWSAq2BpSlSw/iwhIbpA==,type:str]
+        hash: ENC[AES256_GCM,data:D7+37XTpDFRabT5YEh9nfxO1Q9Sdc98jAxPsjkPzj7bthn1H0dlLYZSJ2Fy8Ye4vjIFO+TZ6HWx8N4cSwHTfgls3EYFh1TW0FUnyCY1kYd/+ljfZB9Y6M+i5zb5nEIBHI32Sk7/B20cGnr0SUb3EKU+SmnACgZ0fjKKyUpSzGu75MH8=,iv:3RkTpgy85JPJqu6AEKrw8RY2O+L/CldPuPpN9ln54u8=,tag:Nl0DL5tVenA/fdRNOGyPkA==,type:str]
+#ENC[AES256_GCM,data:ODXFUxxxdQ==,iv:s9zJVx6wo6x517tbNvC+FZ0dFzqbjqeLI6rXBq72hQA=,tag:bXoV2I3LbpmQyddJrtS3Qg==,type:comment]
+#
+#
 #ENC[AES256_GCM,data:T4Wtn49AAxPd2QUFTR+q,iv:bH5goGWBDqumAat9dUv2OwfCUJUpuVqncTMqMBZUXhI=,tag:G+W6hHA+yftQ+4RJpXrxHg==,type:comment]
 switch:
     password: ENC[AES256_GCM,data:qu0f9L7A0eFq/UCpaRs=,iv:W8LLOp3MSfd/+EfNEZNf91K8GgI5eUfVPoWTRES2C0Y=,tag:Q5FlAOfwqwJwPvd7k6i+0g==,type:str]
@@ -291,7 +300,7 @@ sops:
             UmliaFNxVTBqRkI1QWJpWGpTRWxETW8KEY/8AfU73UOzCGhny1cNnd5dCNv7bHXt
             k+uyWPPi+enFkVaceSwMFrA66uaWWrwAj11sXEB7yzvGFPrnAGezjQ==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2026-05-16T08:55:23Z"
-    mac: ENC[AES256_GCM,data:UXueLe3zZcuvUUH9OJGWcwUqzPoIhw+vtTpqZIB2fGOa4KpFCUmOXtRgws+mQVzBRB30xpbfbbwWM/ZIWjVx2EoE4uP09uk8fgtmMD9ZBacHxEzjxksKW78cX4SoOj6tzzhACTkj61RRrXS8Ft1RNZJFZlzeQVodEGt5eoJUq28=,iv:eCsQAiTqqL1w6xQ69u/Yi4iKUXS44sPUOSDuYPp8WFM=,tag:2kEdh4VB0XWhv0KBgD8EGA==,type:str]
+    lastmodified: "2026-05-16T11:08:23Z"
+    mac: ENC[AES256_GCM,data:FprpwGfSw+KObEthT41tD8qgawQPpRlHw0ZxcyH74Nzk+47AbkDR3dWUPmZGPTePcQM4WI3e1IzE0ptJA7Hpcsnq/wHdo+uTW8nozYxzDU7JhjG2Xn6CPov2mV3o0SCegiCpfvE4A3bXiBOPapUIIs+ySBUMmyyW6m5ravElxsA=,iv:wt/3nFmVfodxActWBNvli2M2LLQZG8bkuagA/Fc6iuk=,tag:z1QWaMrGN/8kBrmZ8mPJUA==,type:str]
     unencrypted_suffix: _unencrypted
     version: 3.12.1
diff --git a/config/services/containers/app/memos/memos.container.j2 b/config/services/containers/app/memos/memos.container.j2
new file mode 100644
index 0000000..a9eba88
--- /dev/null
+++ b/config/services/containers/app/memos/memos.container.j2
@@ -0,0 +1,34 @@
+[Quadlet]
+DefaultDependencies=false
+
+[Unit]
+Description=Memos
+
+[Container]
+Image=docker.io/neosmemo/memos:{{ version['containers']['memos'] }}
+ContainerName=memos
+HostName=memos
+PublishPort={{ services['memos']['ports']['http'] }}:5230/tcp
+
+# Volumes
+Volume=%h/data/containers/memos/data:/var/opt/memos:rw
+Volume=%h/containers/memos/ssl:/etc/ssl/memos:ro
+
+# General
+Environment="TZ={{ timezone }}"
+Environment="MEMOS_MODE=prod"
+Environment="MEMOS_PORT=5230"
+Environment="MEMOS_INSTANCE_URL=https://{{ services['memos']['domain']['public'] }}.{{ domain['public'] }}"
+
+# Database (PostgreSQL)
+Environment="MEMOS_DRIVER=postgres"
+Secret=MEMOS_DSN,type=env
+
+[Service]
+ExecStartPre=/usr/bin/nc -zv {{ services['postgresql']['domain'] }}.{{ domain['internal'] }} {{ services['postgresql']['ports']['tcp'] }}
+Restart=always
+RestartSec=10s
+TimeoutStopSec=120
+
+[Install]
+WantedBy=default.target
diff --git a/config/services/containers/auth/authelia/config/authelia.yaml.j2 b/config/services/containers/auth/authelia/config/authelia.yaml.j2
index 84e6d91..f28c7d0 100644
--- a/config/services/containers/auth/authelia/config/authelia.yaml.j2
+++ b/config/services/containers/auth/authelia/config/authelia.yaml.j2
@@ -283,3 +283,24 @@ identity_providers:
         access_token_signed_response_alg: 'none'
         userinfo_signed_response_alg: 'none'
         token_endpoint_auth_method: 'client_secret_post'
+      # https://www.authelia.com/integration/openid-connect/clients/memos/
+      - client_id: 'memos'
+        client_name: 'Memos'
+        client_secret: '{{ hostvars['console']['memos']['oidc']['hash'] }}'
+        public: false
+        authorization_policy: 'one_factor'
+        require_pkce: false
+        pkce_challenge_method: ''
+        redirect_uris:
+          - 'https://{{ services['memos']['domain']['public'] }}.{{ domain['public'] }}/auth/callback'
+        scopes:
+          - 'openid'
+          - 'profile'
+          - 'email'
+        response_types:
+          - 'code'
+        grant_types:
+          - 'authorization_code'
+        access_token_signed_response_alg: 'none'
+        userinfo_signed_response_alg: 'none'
+        token_endpoint_auth_method: 'client_secret_post'
diff --git a/config/services/containers/common/caddy/etc/app/Caddyfile.j2 b/config/services/containers/common/caddy/etc/app/Caddyfile.j2
index fa4cb24..0af9f72 100644
--- a/config/services/containers/common/caddy/etc/app/Caddyfile.j2
+++ b/config/services/containers/common/caddy/etc/app/Caddyfile.j2
@@ -83,3 +83,9 @@
                 header_up Host {http.request.header.X-Forwarded-Host}
         }
 }
+{{ services['memos']['domain']['internal'] }}.{{ domain['internal'] }} {
+        import private_tls
+        reverse_proxy host.containers.internal:{{ services['memos']['ports']['http'] }} {
+                header_up Host {http.request.header.X-Forwarded-Host}
+        }
+}
diff --git a/config/services/containers/common/caddy/etc/auth/Caddyfile.j2 b/config/services/containers/common/caddy/etc/auth/Caddyfile.j2
index ef82979..4896378 100644
--- a/config/services/containers/common/caddy/etc/auth/Caddyfile.j2
+++ b/config/services/containers/common/caddy/etc/auth/Caddyfile.j2
@@ -145,6 +145,15 @@
                 }
         }
 }
+{{ services['memos']['domain']['public'] }}.{{ domain['public'] }} {
+        import crowdsec_log
+        route {
+                crowdsec
+                reverse_proxy https://{{services['memos']['domain']['internal'] }}.{{ domain['internal'] }} {
+                        header_up Host {http.reverse_proxy.upstream.host}
+                }
+        }
+}
 
 # Internal domain
 {{ node['name'] }}.{{ domain['internal'] }} {
diff --git a/docs/services/app/memos.md b/docs/services/app/memos.md
new file mode 100644
index 0000000..574c73c
--- /dev/null
+++ b/docs/services/app/memos.md
@@ -0,0 +1,74 @@
+# Memos
+
+## Prerequisite
+
+### Create database
+
+- Create the password with `openssl rand -base64 32`
+  - Save this value in secrets.yaml in `postgresql.password.memos`
+  - Access infra server to create memos_db with `podman exec -it postgresql psql -U postgres`
+
+```SQL
+CREATE USER memos WITH PASSWORD 'postgresql.password.memos';
+CREATE DATABASE memos_db;
+ALTER DATABASE memos_db OWNER TO memos;
+```
+
+### Create oidc secret and hash
+
+- Create the secret with `openssl rand -base64 32`
+- access to auth vm
+  - `podman exec -it authelia sh`
+  - `authelia crypto hash generate pbkdf2 --password 'memos.oidc.secret'`
+- Save this value in secrets.yaml in `memos.oidc.secret` and `memos.oidc.hash`
+
+### Add postgresql dump backup list
+
+- [set_postgresql.yaml](../../../ansible/roles/infra/tasks/services/set_postgresql.yaml)
+
+```yaml
+- name: Set connected services list
+  ansible.builtin.set_fact:
+    connected_services:
+      - ...
+      - "memos"
+```
+
+## Configuration
+
+### Access to memos
+
+- https://memos.ilnmors.com
+  - Create local-admin account
+
+### Set OIDC
+
+- Profile: Settings: Admin: SSO: Create
+  - Type: OAUTH2
+  - Template: Custom
+  - Provider ID: authelia
+  - Name: Authelia
+  - Client ID: memos
+  - Client secret: memos.oidc.secret
+  - Authorization endpoint: https://authelia.ilnmors.com/api/oidc/authorization
+  - Token endpoint: https://authelia.ilnmors.com/api/oidc/token
+  - User endpoint: https://authelia.ilnmors.com/api/oidc/userinfo
+  - Scopes: openid profile email
+  - Identifier: preferred_username
+  - Display Name: given_name
+  - Email: email
+- Create
+
+- Profile: Settings: Basic: My Account: SSO Accounts: Link
+  - Login with Authelia
+  - Accept
+
+### Disallow local login and signup
+
+- Profile: Settings: Admin: System
+  - Disallow password auth: toggle
+- Save
+
+### Change user name
+
+- Profile: Settings: Basic: My Account: Edit
diff --git a/docs/specifications/environments.md b/docs/specifications/environments.md
index 75f6395..1ae9175 100644
--- a/docs/specifications/environments.md
+++ b/docs/specifications/environments.md
@@ -128,7 +128,8 @@
             - budget and finance
         - [x] outline
             - Compare to affine, the whiteboard and canvas functions are not useful enough
-        - [ ] memos
+        - [x] memos
+            - Check outline and memos can be substituded for affine
         - WriteFreely or directus + frontend(Astro)
         - MediaCMS or PeerTube
         - Funkwhale or Navidrome or Jellyfin