diff --git a/Hello.md b/Hello.md
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+++ b/Hello.md
@@ -20,6 +20,7 @@ This repository contains Docker Compose files, configuration templates, and depl
 | Omo | AI coding agent (oh-my-opencode) with local LLM via Bifrost |
 | Vaultwarden | Self-hosted password manager (Bitwarden-compatible), stores all Agap credentials |
 | Seafile | File sync, sharing, and document editing (OnlyOffice + WebDAV) |
+| Radicale | CalDAV/CardDAV server for calendar and contacts (`dav.alogins.net`) |
 | Copyparty | File sharing on Juris remote server (`share.alogins.net:3999`) |
 
 ## Stack
diff --git a/Home.md b/Home.md
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+++ b/Home.md
@@ -23,6 +23,7 @@
 - [[Vaultwarden]] — Password manager (Bitwarden-compatible)
 - [[Seafile]] — File sync and document editing
 - [[Matrix]] — Synapse homeserver, E2EE bot adapter (Adolf + Zabbix)
+- [[Radicale]] — CalDAV/CardDAV (calendar and contacts)
 
 ## Quick Start
 
diff --git a/Radicale.md b/Radicale.md
new file mode 100644
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--- /dev/null
+++ b/Radicale.md
@@ -0,0 +1,48 @@
+# Radicale
+
+Self-hosted CalDAV (calendar) and CardDAV (contacts) server.
+
+## Details
+
+| | |
+|---|---|
+| **Directory** | `~/agap_git/radicale/` |
+| **Image** | `tomsquest/docker-radicale` |
+| **Port** | `5232` |
+| **URL** | `https://dav.alogins.net` |
+| **Data** | `/mnt/ssd/dbs/radicale/data/` |
+| **Config** | `/mnt/ssd/dbs/radicale/config/config` |
+
+## Authentication
+
+htpasswd with bcrypt encryption. Users file: `/mnt/ssd/dbs/radicale/config/users`.
+
+Credentials stored in Vaultwarden as `RADICALE_PASSWORD`.
+
+### Add a user
+
+```bash
+docker exec radicale-radicale-1 htpasswd -nBb USERNAME PASSWORD \
+  >> /mnt/ssd/dbs/radicale/config/users
+```
+
+## Client Setup
+
+Use any CalDAV/CardDAV client (Thunderbird, DAVx⁵ on Android, Apple Calendar/Contacts).
+
+Server URL: `https://dav.alogins.net/USERNAME/`
+
+## Config
+
+```ini
+[server]
+hosts = 0.0.0.0:5232
+
+[auth]
+type = htpasswd
+htpasswd_filename = /config/users
+htpasswd_encryption = bcrypt
+
+[storage]
+filesystem_folder = /data/collections
+```