diff --git a/flake.lock b/flake.lock
index 7dbc1cd..b1b5976 100644
--- a/flake.lock
+++ b/flake.lock
@@ -688,11 +688,11 @@
         "treefmt-nix": "treefmt-nix_2"
       },
       "locked": {
-        "lastModified": 1735551011,
-        "narHash": "sha256-rp26PcdLjfgxsCeaSeZ0K1rGPN1Ap7YCy1UVuo9gRJA=",
+        "lastModified": 1735985475,
+        "narHash": "sha256-7blkWqfcvYKfaL2hpy/nWTooHRfJSqaO0a2+XWccqkE=",
         "owner": "pizzapim",
         "repo": "NixNG",
-        "rev": "aa35f7a3d426e906b15e3083c90bf2972bcfb4b4",
+        "rev": "dea65c6a83945c755b9d0097aa2535991daeb907",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index c875d9f..d1a3a35 100644
--- a/flake.nix
+++ b/flake.nix
@@ -60,5 +60,6 @@
       ./formatter.nix
       ./shell.nix
       ./nixng-configurations
+      ./nixng-modules
     ];
 }
diff --git a/nixng-configurations/default.nix b/nixng-configurations/default.nix
index cd02779..e70cce2 100644
--- a/nixng-configurations/default.nix
+++ b/nixng-configurations/default.nix
@@ -37,6 +37,12 @@ in {
       };
 
       extraModules = [
+        self.nixngModules.bazarr
+        self.nixngModules.radicale
+        self.nixngModules.jellyseerr
+        self.nixngModules.radarr
+        self.nixngModules.sonarr
+        self.nixngModules.prowlarr
         {
           nixpkgs.overlays = [
             (final: _prev: {
diff --git a/nixng-modules/bazarr.nix b/nixng-modules/bazarr.nix
new file mode 100644
index 0000000..4620479
--- /dev/null
+++ b/nixng-modules/bazarr.nix
@@ -0,0 +1,29 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}: let
+  cfg = config.services.bazarr;
+in {
+  options.services.bazarr = {
+    enable = lib.mkEnableOption "bazarr";
+    package = lib.mkPackageOption pkgs "bazarr" {};
+    configDir = lib.mkOption {
+      description = "Where Bazarr's configuration files are stored.";
+      type = lib.types.str;
+      default = "/config";
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    init.services.bazarr = {
+      enabled = true;
+      script = pkgs.writeShellScript "bazarr-run" ''
+        ${lib.getExe cfg.package} \
+          --no-update \
+          --config '${cfg.configDir}'
+      '';
+    };
+    environment.systemPackages = [cfg.package];
+  };
+}
diff --git a/nixng-modules/default.nix b/nixng-modules/default.nix
new file mode 100644
index 0000000..e39eca0
--- /dev/null
+++ b/nixng-modules/default.nix
@@ -0,0 +1,10 @@
+{...}: {
+  nixngModules = {
+    bazarr = import ./bazarr.nix;
+    radicale = import ./radicale.nix;
+    jellyseerr = import ./jellyseerr.nix;
+    radarr = import ./radarr.nix;
+    sonarr = import ./sonarr.nix;
+    prowlarr = import ./prowlarr.nix;
+  };
+}
diff --git a/nixng-modules/jellyseerr.nix b/nixng-modules/jellyseerr.nix
new file mode 100644
index 0000000..c9179c6
--- /dev/null
+++ b/nixng-modules/jellyseerr.nix
@@ -0,0 +1,46 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}: let
+  cfg = config.services.jellyseerr;
+in {
+  options.services.jellyseerr = {
+    enable = lib.mkEnableOption "jellyseerr";
+    package = lib.mkPackageOption pkgs "jellyseerr" {};
+
+    port = lib.mkOption {
+      description = ''
+        The port Jellyseerr should listen on.
+      '';
+      type = lib.types.port;
+      example = 8080;
+      default = 5055;
+    };
+
+    configDir = lib.mkOption {
+      description = ''
+        The directory to save run-time configuration.
+      '';
+      type = lib.types.str;
+      example = "/jellyseerr";
+      default = "/var/lib/jellyseerr";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    init.services.jellyseerr = {
+      enabled = true;
+      script = lib.getExe cfg.package;
+    };
+
+    environment = {
+      systemPackages = [cfg.package];
+      variables = {
+        PORT = builtins.toString cfg.port;
+        CONFIG_DIRECTORY = cfg.configDir;
+      };
+    };
+  };
+}
diff --git a/nixng-modules/prowlarr.nix b/nixng-modules/prowlarr.nix
new file mode 100644
index 0000000..e8f9677
--- /dev/null
+++ b/nixng-modules/prowlarr.nix
@@ -0,0 +1,33 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}: let
+  cfg = config.services.prowlarr;
+in {
+  options.services.prowlarr = {
+    enable = lib.mkEnableOption "prowlarr";
+    package = lib.mkPackageOption pkgs "prowlarr" {};
+
+    dataDir = lib.mkOption {
+      description = "Directory to store Prowlarr's data";
+      type = lib.types.str;
+      default = "/config";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    init.services.prowlarr = {
+      enabled = true;
+
+      script = pkgs.writeShellScript "prowlarr-run" ''
+        ${lib.getExe cfg.package} \
+          -nobrowser \
+          -data=${cfg.dataDir}
+      '';
+    };
+
+    environment.systemPackages = [cfg.package];
+  };
+}
diff --git a/nixng-modules/radarr.nix b/nixng-modules/radarr.nix
new file mode 100644
index 0000000..aa6af40
--- /dev/null
+++ b/nixng-modules/radarr.nix
@@ -0,0 +1,31 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.services.radarr;
+in {
+  options.services.radarr = {
+    enable = lib.mkEnableOption "radarr";
+    package = lib.mkPackageOption pkgs "radarr" {};
+
+    dataDir = lib.mkOption {
+      type = lib.types.str;
+      default = "/var/lib/radarr/.config/Radarr";
+      description = "The directory where Radarr stores its data files.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    init.services.radarr = {
+      enabled = true;
+
+      script = pkgs.writeShellScript "radarr-run.sh" ''
+        ${lib.getExe cfg.package} -nobrowser -data='${cfg.dataDir}'
+      '';
+    };
+
+    environment.systemPackages = [cfg.package];
+  };
+}
diff --git a/nixng-modules/radicale.nix b/nixng-modules/radicale.nix
new file mode 100644
index 0000000..f12b0bd
--- /dev/null
+++ b/nixng-modules/radicale.nix
@@ -0,0 +1,75 @@
+{
+  lib,
+  pkgs,
+  config,
+  nglib,
+  ...
+}: let
+  cfg = config.services.radicale;
+
+  settingsFormat = pkgs.formats.ini {
+    listToValue = lib.concatMapStringsSep ", " (lib.generators.mkValueStringDefault {});
+  };
+in {
+  options.services.radicale = {
+    enable = lib.mkEnableOption "radicale";
+    package = lib.mkPackageOption pkgs "radicale" {};
+    user = lib.mkOption {
+      description = "radicale user";
+      type = lib.types.str;
+      default = "radicale";
+    };
+    group = lib.mkOption {
+      description = "radicale group";
+      type = lib.types.str;
+      default = "radicale";
+    };
+    settings = lib.mkOption {
+      type = settingsFormat.type;
+      default = {};
+      description = ''
+        Configuration for Radicale. See
+        <https://radicale.org/v3.html#configuration>.
+      '';
+      example = lib.literalExpression ''
+        server = {
+          hosts = [ "0.0.0.0:5232" "[::]:5232" ];
+        };
+        auth = {
+          type = "htpasswd";
+          htpasswd_filename = "/etc/radicale/users";
+          htpasswd_encryption = "bcrypt";
+        };
+        storage = {
+          filesystem_folder = "/var/lib/radicale/collections";
+        };
+      '';
+    };
+  };
+  config = lib.mkIf cfg.enable (let
+    configFile = settingsFormat.generate "radicale.ini" cfg.settings;
+  in {
+    init.services.radicale = {
+      enabled = true;
+      script = pkgs.writeShellScript "radicale-run" ''
+        chpst -u ${cfg.user}:${cfg.group} ${cfg.package}/bin/radicale \
+          --config ${configFile}
+      '';
+    };
+    environment.systemPackages = [cfg.package];
+    users.users.${cfg.user} = nglib.mkDefaultRec {
+      description = "radicale";
+      group = cfg.group;
+      createHome = false;
+      home = "/var/empty";
+      useDefaultShell = true;
+      uid = config.ids.uids.radicale;
+    };
+    users.groups.${cfg.group} = nglib.mkDefaultRec {gid = config.ids.gids.radicale;};
+
+    ids = {
+      uids.radicale = 408;
+      gids.radicale = 408;
+    };
+  });
+}
diff --git a/nixng-modules/sonarr.nix b/nixng-modules/sonarr.nix
new file mode 100644
index 0000000..5ebff69
--- /dev/null
+++ b/nixng-modules/sonarr.nix
@@ -0,0 +1,31 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}: let
+  cfg = config.services.sonarr;
+in {
+  options.services.sonarr = {
+    enable = lib.mkEnableOption "sonarr";
+    package = lib.mkPackageOption pkgs "sonarr" {};
+
+    dataDir = lib.mkOption {
+      type = lib.types.str;
+      default = "/var/lib/sonarr/.config/NzbDrone";
+      description = "The directory where Sonarr stores its data files.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    init.services.sonarr = {
+      enabled = true;
+
+      script = pkgs.writeShellScript "sonarr-run" ''
+        ${lib.getExe cfg.package} -nobrowser -data=${cfg.dataDir}
+      '';
+    };
+
+    environment.systemPackages = [cfg.package];
+  };
+}