diff --git a/modules/home/applications/firefox.nix b/modules/home/applications/firefox.nix
new file mode 100644
index 0000000..a5c8e4a
--- /dev/null
+++ b/modules/home/applications/firefox.nix
@@ -0,0 +1,188 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  inherit (lib)
+    concatStrings
+    fileContents
+    getExe
+    mapAttrsToList
+    mkEnableOption
+    mkIf
+    ;
+  inherit (config.theme) colors fonts;
+
+  cfg = config.ataraxia.programs.firefox;
+
+  homeDir = config.home.homeDirectory;
+  mkUserJs =
+    {
+      prefs ? { },
+      extraPrefs ? "",
+    }:
+    ''
+      ${extraPrefs}
+
+      ${concatStrings (
+        mapAttrsToList (name: value: ''
+          user_pref("${name}", ${builtins.toJSON value});
+        '') prefs
+      )}
+    '';
+
+  finalPackage = config.programs.firefox.finalPackage;
+  firefox-kpoxa = pkgs.writeShellScriptBin "firefox-kpoxa" ''
+    ${getExe finalPackage} -profile ${homeDir}/.mozilla/firefox/kpoxa
+  '';
+  username = config.home.username;
+in
+{
+  options.ataraxia.programs.firefox = {
+    enable = mkEnableOption "Enable firefox program";
+  };
+
+  config = mkIf cfg.enable {
+    dbus.packages = [ finalPackage ];
+    home.packages = [ firefox-kpoxa ];
+    home.sessionVariables = {
+      MOZ_USE_XINPUT2 = "1";
+      MOZ_DBUS_REMOTE = "1";
+    };
+
+    defaultApplications.browser = {
+      cmd = getExe finalPackage;
+      desktop = "firefox";
+    };
+
+    programs.firefox = {
+      enable = true;
+      package = pkgs.firefox.override {
+        # Mailvelope GnuPG integration
+        nativeMessagingHosts = [
+          (pkgs.writeTextDir "lib/mozilla/native-messaging-hosts/gpgmejson.json" ''
+            {
+              "name": "gpgmejson",
+              "description": "JavaScript binding for GnuPG",
+              "path": "${pkgs.gpgme.dev}/bin/gpgme-json",
+              "type": "stdio",
+              "allowed_extensions": ["jid1-AQqSMBYb0a8ADg@jetpack"]
+            }
+          '')
+        ];
+      };
+      profiles = {
+        ${username} = {
+          id = 0;
+          userChrome = ''
+            #TabsToolbar {
+              visibility: collapse;
+            }
+            toolbar#nav-bar, nav-bar-customization-target {
+              background: ${colors.color0} !important;
+            }
+            @-moz-document url("about:newtab") {
+              * { background-color: ${colors.color0}  !important; }
+            }
+          '';
+          userContent = ''
+            .scroll-styled-h, .scroll-styled-v, html {
+              scrollbar-color: #495460 rgba(255, 255, 255, .0);
+              scrollbar-width: thin;
+            }
+          '';
+          extraConfig = mkUserJs {
+            prefs = {
+              "network.http.referer.XOriginPolicy" = 0;
+              "signon.rememberSignons" = false;
+              "browser.quitShortcut.disabled" = true;
+              "general.autoScroll" = true;
+              "extensions.pocket.enabled" = false;
+              "browser.startup.page" = 1;
+              "browser.startup.homepage" = "https://ataraxiadev.com";
+              "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
+              "browser.search.suggest.enabled" = true;
+              "ui.context_menus.after_mouseup" = true;
+
+              "font.name.monospace.x-western" = fonts.mono.family;
+              "font.name.sans-serif.x-western" = fonts.sans.family;
+              "font.name.serif.x-western" = fonts.serif.family;
+              "browser.display.background_color" = colors.color0;
+              "browser.display.foreground_color" = colors.color5;
+              "browser.anchor_color" = colors.color13;
+              "browser.visited_color" = colors.color12;
+              "browser.display.use_document_fonts" = true;
+              "pdfjs.disabled" = false;
+
+              "media.eme.enabled" = true;
+              "media.ffmpeg.vaapi.enabled" = true;
+
+              "experiments.activeExperiment" = false;
+              "experiments.enabled" = false;
+              "experiments.supported" = false;
+              "network.allow-experiments" = false;
+
+              "network.protocol-handler.external.element" = false;
+            };
+            extraPrefs = "${fileContents "${pkgs.arkenfox-userjs}/share/user.js/user.js"}";
+          };
+        };
+        kpoxa = {
+          id = 1;
+          userContent = ''
+            .scroll-styled-h, .scroll-styled-v, html {
+              scrollbar-color: #495460 rgba(255, 255, 255, .0);
+              scrollbar-width: thin;
+            }
+          '';
+          extraConfig = mkUserJs {
+            prefs = {
+              "network.http.referer.XOriginPolicy" = 0;
+              "signon.rememberSignons" = false;
+              "general.autoScroll" = true;
+              "extensions.pocket.enabled" = false;
+              "browser.startup.homepage" = "https://ataraxiadev.com";
+              "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
+              "browser.search.suggest.enabled" = true;
+              "browser.urlbar.suggest.searches" = true;
+              "ui.context_menus.after_mouseup" = true;
+              "keyword.enabled" = true;
+              "media.eme.enabled" = true;
+
+              "browser.startup.page" = 3;
+              "browser.sessionstore.privacy_level" = 0;
+              "privacy.clearOnShutdown.history" = false;
+              "privacy.clearOnShutdown.cookies" = false;
+              "privacy.cpd.history" = false;
+
+              "font.name.monospace.x-western" = fonts.mono.family;
+              "font.name.sans-serif.x-western" = fonts.sans.family;
+              "font.name.serif.x-western" = fonts.serif.family;
+              "browser.display.background_color" = colors.color0;
+              "browser.display.foreground_color" = colors.color5;
+              "browser.anchor_color" = colors.color13;
+              "browser.visited_color" = colors.color12;
+              "browser.display.use_document_fonts" = true;
+
+              "experiments.activeExperiment" = false;
+              "experiments.enabled" = false;
+              "experiments.supported" = false;
+              "network.allow-experiments" = false;
+
+              "network.protocol-handler.external.element" = false;
+            };
+            extraPrefs = "${fileContents "${pkgs.arkenfox-userjs}/share/user.js/user.js"}";
+          };
+        };
+      };
+    };
+
+    persist.state.directories = [
+      # ".mozilla/firefox/${username}"
+      # ".mozilla/firefox/kpoxa"
+      ".mozilla/firefox"
+    ];
+  };
+}
diff --git a/modules/home/roles/default.nix b/modules/home/roles/default.nix
index f8164ac..7ad530c 100644
--- a/modules/home/roles/default.nix
+++ b/modules/home/roles/default.nix
@@ -79,6 +79,7 @@ in
         ataraxia.defaults.sound.enable = mkDefault true;
         ataraxia.programs.aria2.enable = mkDefault true;
         ataraxia.programs.default.enable = mkDefault true;
+        ataraxia.programs.firefox.enable = mkDefault true;
         ataraxia.programs.vscode.enable = mkDefault true;
         ataraxia.wayland.enable = mkDefault true;
         ataraxia.wayland.hyprland.enable = mkDefault true;