diff --git a/modules/services/collabora-online.nix b/modules/services/collabora-online.nix
new file mode 100644
index 0000000..b95171e
--- /dev/null
+++ b/modules/services/collabora-online.nix
@@ -0,0 +1,75 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.my.services.collabora-online;
+in
+{
+
+  options.my.services.collabora-online = {
+    enable = lib.mkEnableOption "Enable Collabora Online module";
+
+    proxy = {
+      enable = lib.mkEnableOption "Set the proxy entry for this service";
+
+      domain = lib.mkOption {
+        default = "example.com";
+        type = lib.types.str;
+        description = ''
+          The domain where Caddy is reachable
+        '';
+      };
+
+      subdomain = lib.mkOption {
+        default = "collabora";
+        type = lib.types.str;
+        description = ''
+          The subdomain where Collabora Online is reachable
+        '';
+      };
+
+      host = lib.mkOption {
+        default = "localhost";
+        type = lib.types.str;
+        description = ''
+          Host name where Collabora Online is running
+        '';
+      };
+    };
+  };
+
+  config = lib.mkMerge [
+    (lib.mkIf cfg.enable {
+
+      services.collabora-online = {
+        enable = true;
+        # settings = {
+        #   host = [
+        #     ''127\.0\.0\.1''
+        #   ];
+        #   storage.wopi."@allow" = true;
+        # };
+      };
+
+      networking.firewall.allowedTCPPorts = [
+        config.services.collabora-online.port
+      ];
+    })
+
+    (lib.mkIf cfg.proxy.enable {
+      services.caddy = with cfg.proxy; {
+        virtualHosts."${subdomain}.${domain}".extraConfig = ''
+          import cloudflare_${domain}
+          reverse_proxy http://${host}:${toString config.services.collabora-online.port} {
+            # Required to circumvent bug of Onlyoffice loading mixed non-https content
+            header_up X-Forwarded-Proto https
+          }
+        '';
+      };
+    })
+  ];
+}
+
diff --git a/modules/services/default.nix b/modules/services/default.nix
index f18ab3d..53984e0 100644
--- a/modules/services/default.nix
+++ b/modules/services/default.nix
@@ -3,6 +3,7 @@
     ./authentik.nix
     ./dashy.nix
     ./firefly-iii.nix
+    ./collabora-online.nix
     ./forgejo.nix
     ./forgejo-runner.nix
     ./ilpost-addict.nix