diff --git a/tools/addon/mongo-express.sh b/tools/addon/mongo-express.sh
new file mode 100644
index 00000000..29747f65
--- /dev/null
+++ b/tools/addon/mongo-express.sh
@@ -0,0 +1,163 @@
+#!/usr/bin/env bash
+
+# community-scripts ORG | Mongo Express Addon Installer
+# Author: MickLesk
+# License: MIT
+# Source: https://github.com/mongo-express/mongo-express
+
+if command -v curl >/dev/null 2>&1; then
+  source <(curl -fsSL https://git.community-scripts.org/community-scripts/ProxmoxVED/raw/branch/main/misc/core.func)
+  load_functions
+elif command -v wget >/dev/null 2>&1; then
+  source <(wget -qO- https://git.community-scripts.org/community-scripts/ProxmoxVED/raw/branch/main/misc/core.func)
+  load_functions
+fi
+source <(curl -fsSL https://git.community-scripts.org/community-scripts/ProxmoxVED/raw/branch/main/misc/tools.func)
+
+color
+catch_errors
+
+APP="Mongo Express"
+APP_TYPE="tools"
+APP_DIR="/opt/mongo-express"
+SERVICE="mongo-express"
+REPO="mongo-express/mongo-express"
+DEFAULT_PORT=8081
+
+header_info "$APP"
+
+if ! grep -q -Ei 'debian|ubuntu' /etc/os-release; then
+  msg_error "Unsupported OS. This addon supports only Debian or Ubuntu."
+  exit 1
+fi
+
+IP=$(hostname -I | awk '{print $1}')
+
+function is_installed() {
+  [[ -d "$APP_DIR" ]] && systemctl is-active --quiet "$SERVICE"
+}
+
+function install_mongo_express() {
+  local port="${1:-$DEFAULT_PORT}"
+  local mongo_url="${2:-mongodb://localhost:27017}"
+
+  NODE_VERSION="22" NODE_MODULE="yarn" setup_nodejs
+
+  fetch_and_deploy_gh_release "mongo-express" "$REPO" "tarball" "latest" "$APP_DIR"
+
+  msg_info "Building ${APP}"
+  cd "$APP_DIR"
+  $STD yarn install
+  $STD yarn build
+  rm -rf lib/scripts
+  msg_ok "Built ${APP}"
+
+  local cookie_secret
+  local session_secret
+  cookie_secret=$(openssl rand -base64 32)
+  session_secret=$(openssl rand -base64 32)
+
+  msg_info "Configuring ${APP}"
+  cat <<EOF >"$APP_DIR/.env"
+ME_CONFIG_MONGODB_URL=${mongo_url}
+ME_CONFIG_MONGODB_ENABLE_ADMIN=true
+ME_CONFIG_BASICAUTH_ENABLED=true
+ME_CONFIG_BASICAUTH_USERNAME=admin
+ME_CONFIG_BASICAUTH_PASSWORD=$(openssl rand -base64 12 | tr -dc 'a-zA-Z0-9' | cut -c1-16)
+ME_CONFIG_SITE_COOKIESECRET=${cookie_secret}
+ME_CONFIG_SITE_SESSIONSECRET=${session_secret}
+VCAP_APP_HOST=0.0.0.0
+PORT=${port}
+EOF
+  msg_ok "Configured ${APP}"
+
+  msg_info "Creating Service"
+  cat <<EOF >/etc/systemd/system/${SERVICE}.service
+[Unit]
+Description=Mongo Express
+After=network.target
+
+[Service]
+Type=simple
+User=root
+WorkingDirectory=${APP_DIR}
+EnvironmentFile=${APP_DIR}/.env
+Environment=NODE_ENV=production
+ExecStart=/usr/bin/node app.js
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
+EOF
+  systemctl enable -q --now "$SERVICE"
+  msg_ok "Created Service"
+
+  local me_pass
+  me_pass=$(grep ME_CONFIG_BASICAUTH_PASSWORD "$APP_DIR/.env" | cut -d= -f2)
+  msg_ok "${APP} installed at http://${IP}:${port}"
+  echo -e "${TAB}Login: admin / ${me_pass}"
+  echo -e "${TAB}MongoDB URL: ${mongo_url}"
+}
+
+function uninstall_mongo_express() {
+  msg_info "Removing ${APP}"
+  systemctl disable -q --now "$SERVICE" 2>/dev/null || true
+  rm -f "/etc/systemd/system/${SERVICE}.service"
+  rm -rf "$APP_DIR"
+  msg_ok "${APP} uninstalled"
+}
+
+function update_mongo_express() {
+  if check_for_gh_release "mongo-express" "$REPO"; then
+    msg_info "Stopping ${APP}"
+    systemctl stop "$SERVICE"
+    msg_ok "Stopped ${APP}"
+
+    msg_info "Backing up Configuration"
+    cp "$APP_DIR/.env" /opt/mongo-express.env.bak
+    msg_ok "Backed up Configuration"
+
+    CLEAN_INSTALL=1 fetch_and_deploy_gh_release "mongo-express" "$REPO" "tarball" "latest" "$APP_DIR"
+
+    msg_info "Building ${APP}"
+    cd "$APP_DIR"
+    $STD yarn install
+    $STD yarn build
+    rm -rf lib/scripts
+    msg_ok "Built ${APP}"
+
+    msg_info "Restoring Configuration"
+    cp /opt/mongo-express.env.bak "$APP_DIR/.env"
+    rm -f /opt/mongo-express.env.bak
+    msg_ok "Restored Configuration"
+
+    msg_info "Starting ${APP}"
+    systemctl start "$SERVICE"
+    msg_ok "Started ${APP}"
+    msg_ok "${APP} updated successfully"
+  else
+    msg_ok "${APP} is already up-to-date"
+  fi
+}
+
+if is_installed; then
+  read -r -p "Update (1), Uninstall (2), Cancel (3)? [1/2/3]: " action
+  action="${action//[[:space:]]/}"
+  case "$action" in
+  1) update_mongo_express ;;
+  2) uninstall_mongo_express ;;
+  3) msg_info "Cancelled" ;;
+  *) msg_error "Invalid input" ;;
+  esac
+else
+  echo -e "${TAB}Enter MongoDB connection URL (default: mongodb://localhost:27017): "
+  read -r MONGO_URL_INPUT
+  MONGO_URL="${MONGO_URL_INPUT:-mongodb://localhost:27017}"
+  echo -e "${TAB}Enter port number (default: ${DEFAULT_PORT}): "
+  read -r PORT_INPUT
+  PORT="${PORT_INPUT:-$DEFAULT_PORT}"
+  read -r -p "Install ${APP}? (y/n): " answer
+  answer="${answer//[[:space:]]/}"
+  [[ "${answer,,}" =~ ^(y|yes)$ ]] && install_mongo_express "$PORT" "$MONGO_URL" || msg_info "Installation skipped"
+fi