diff --git a/modules/applications/1password/darwin.nix b/modules/applications/1password/darwin.nix
new file mode 100644
index 0000000..a01130a
--- /dev/null
+++ b/modules/applications/1password/darwin.nix
@@ -0,0 +1,8 @@
+{
+  # The macOS app must live in /Applications for its background integrations,
+  # including the SSH agent, to work correctly.
+  homebrew = {
+    enable = true;
+    casks = [ "1password" ];
+  };
+}
diff --git a/modules/applications/1password/home.nix b/modules/applications/1password/home.nix
new file mode 100644
index 0000000..c574d09
--- /dev/null
+++ b/modules/applications/1password/home.nix
@@ -0,0 +1,7 @@
+{ pkgs, ... }:
+{
+  home.packages = [
+    pkgs._1password-cli
+  ]
+  ++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [ pkgs._1password-gui ];
+}
diff --git a/modules/applications/1password/nixos.nix b/modules/applications/1password/nixos.nix
new file mode 100644
index 0000000..910279b
--- /dev/null
+++ b/modules/applications/1password/nixos.nix
@@ -0,0 +1,12 @@
+{ primaryUser, lib, ... }:
+{
+  programs._1password.enable = true;
+  programs._1password-gui = {
+    enable = true;
+    polkitPolicyOwners = [ primaryUser ];
+  };
+
+  programs.ssh.startAgent = lib.mkForce false;
+  programs.gnupg.agent.enableSSHSupport = lib.mkForce false;
+  services.gnome.gcr-ssh-agent.enable = lib.mkForce false;
+}
diff --git a/modules/applications/arduino/home.nix b/modules/applications/arduino/home.nix
new file mode 100644
index 0000000..b0ff217
--- /dev/null
+++ b/modules/applications/arduino/home.nix
@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.arduino-cli ];
+}
diff --git a/modules/applications/arduino/nixos.nix b/modules/applications/arduino/nixos.nix
new file mode 100644
index 0000000..731e382
--- /dev/null
+++ b/modules/applications/arduino/nixos.nix
@@ -0,0 +1,14 @@
+{ pkgs, ... }:
+let
+  arduinoIdeX11 = pkgs.arduino-ide.overrideAttrs (old: {
+    nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ [ pkgs.makeWrapper ];
+
+    postFixup = (old.postFixup or "") + ''
+      wrapProgram $out/bin/arduino-ide \
+        --add-flags "--ozone-platform=x11"
+    '';
+  });
+in
+{
+  environment.systemPackages = [ arduinoIdeX11 ];
+}
diff --git a/modules/applications/chrome/home.nix b/modules/applications/chrome/home.nix
new file mode 100644
index 0000000..d58c4c8
--- /dev/null
+++ b/modules/applications/chrome/home.nix
@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.google-chrome ];
+}
diff --git a/modules/applications/chrome/nixos.nix b/modules/applications/chrome/nixos.nix
new file mode 100644
index 0000000..30e26a5
--- /dev/null
+++ b/modules/applications/chrome/nixos.nix
@@ -0,0 +1,25 @@
+{ pkgs, ... }:
+let
+  chromeLauncher = pkgs.makeDesktopItem {
+    name = "google-chrome";
+    desktopName = "Google Chrome";
+    genericName = "Web Browser";
+    exec = "${pkgs.google-chrome}/bin/google-chrome-stable --enable-features=TouchpadOverscrollHistoryNavigation %U";
+    icon = "google-chrome";
+    terminal = false;
+    categories = [
+      "Network"
+      "WebBrowser"
+    ];
+    startupNotify = true;
+  };
+in
+{
+  environment.systemPackages = [ chromeLauncher ];
+
+  xdg.mime.defaultApplications = {
+    "text/html" = "google-chrome.desktop";
+    "x-scheme-handler/http" = "google-chrome.desktop";
+    "x-scheme-handler/https" = "google-chrome.desktop";
+  };
+}
diff --git a/modules/applications/codex-desktop/darwin.nix b/modules/applications/codex-desktop/darwin.nix
new file mode 100644
index 0000000..2a08744
--- /dev/null
+++ b/modules/applications/codex-desktop/darwin.nix
@@ -0,0 +1,8 @@
+{
+  # The former Codex app cask is deprecated in favor of ChatGPT, whose desktop
+  # application includes the current Codex experience on macOS.
+  homebrew = {
+    enable = true;
+    casks = [ "chatgpt" ];
+  };
+}
diff --git a/modules/applications/codex-desktop/meta.nix b/modules/applications/codex-desktop/meta.nix
new file mode 100644
index 0000000..8e0244e
--- /dev/null
+++ b/modules/applications/codex-desktop/meta.nix
@@ -0,0 +1,10 @@
+{ inputs, ... }:
+{
+  description = "Codex Desktop for Linux";
+
+  includes = [ "applications.codex" ];
+
+  imports.nixos = [
+    inputs.codex-desktop-linux.nixosModules.default
+  ];
+}
diff --git a/modules/applications/codex-desktop/nixos.nix b/modules/applications/codex-desktop/nixos.nix
new file mode 100644
index 0000000..c53538e
--- /dev/null
+++ b/modules/applications/codex-desktop/nixos.nix
@@ -0,0 +1,37 @@
+{
+  inputs,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  codexCliPackage = inputs.llm-agents.packages.${pkgs.stdenv.hostPlatform.system}.codex;
+  codexDesktopPackage =
+    inputs.codex-desktop-linux.packages.${pkgs.stdenv.hostPlatform.system}.codex-desktop-computer-use-ui;
+  launcher = pkgs.makeDesktopItem {
+    name = "codex";
+    desktopName = "Codex";
+    genericName = "ChatGPT Desktop";
+    comment = "Run Codex Desktop";
+    exec = "env CODEX_CLI_PATH=${lib.getExe' codexCliPackage "codex"} BAMF_DESKTOP_FILE_HINT=codex.desktop CHROME_DESKTOP=codex.desktop ${lib.getExe' codexDesktopPackage "codex-desktop"} %u";
+    icon = "codex-desktop";
+    terminal = false;
+    categories = [ "Development" ];
+    startupNotify = true;
+    startupWMClass = "codex-desktop";
+    actions.new-window = {
+      name = "New Window";
+      exec = "env CODEX_CLI_PATH=${lib.getExe' codexCliPackage "codex"} BAMF_DESKTOP_FILE_HINT=codex.desktop CHROME_DESKTOP=codex.desktop CODEX_MULTI_LAUNCH=1 ${lib.getExe' codexDesktopPackage "codex-desktop"} --new-instance";
+    };
+  };
+in
+{
+  programs.codexDesktopLinux = {
+    enable = true;
+    package = codexDesktopPackage;
+    cliPackage = codexCliPackage;
+    computerUseUi.enable = true;
+  };
+
+  environment.systemPackages = [ launcher ];
+}
diff --git a/modules/applications/codex/home.nix b/modules/applications/codex/home.nix
new file mode 100644
index 0000000..410f6ce
--- /dev/null
+++ b/modules/applications/codex/home.nix
@@ -0,0 +1,6 @@
+{ inputs, pkgs, ... }:
+{
+  home.packages = [
+    inputs.llm-agents.packages.${pkgs.stdenv.hostPlatform.system}.codex
+  ];
+}
diff --git a/modules/applications/direnv/home.nix b/modules/applications/direnv/home.nix
new file mode 100644
index 0000000..2b51c9d
--- /dev/null
+++ b/modules/applications/direnv/home.nix
@@ -0,0 +1,6 @@
+{
+  programs.direnv = {
+    enable = true;
+    nix-direnv.enable = true;
+  };
+}
diff --git a/modules/applications/discord/home.nix b/modules/applications/discord/home.nix
new file mode 100644
index 0000000..b5af79f
--- /dev/null
+++ b/modules/applications/discord/home.nix
@@ -0,0 +1,3 @@
+{
+  programs.vesktop.enable = true;
+}
diff --git a/modules/applications/docker/darwin.nix b/modules/applications/docker/darwin.nix
new file mode 100644
index 0000000..d4d83f7
--- /dev/null
+++ b/modules/applications/docker/darwin.nix
@@ -0,0 +1,6 @@
+{
+  homebrew = {
+    enable = true;
+    casks = [ "orbstack" ];
+  };
+}
diff --git a/modules/applications/docker/home.nix b/modules/applications/docker/home.nix
new file mode 100644
index 0000000..7e8d373
--- /dev/null
+++ b/modules/applications/docker/home.nix
@@ -0,0 +1,7 @@
+{ pkgs, ... }:
+{
+  home.packages = [
+    pkgs.docker-client
+    pkgs.oxker
+  ];
+}
diff --git a/modules/applications/docker/meta.nix b/modules/applications/docker/meta.nix
new file mode 100644
index 0000000..607eae6
--- /dev/null
+++ b/modules/applications/docker/meta.nix
@@ -0,0 +1,5 @@
+{
+  description = "Docker command-line client and NixOS daemon";
+
+  includes = [ "services.docker" ];
+}
diff --git a/modules/applications/gnome/home.nix b/modules/applications/gnome/home.nix
new file mode 100644
index 0000000..99a0ff3
--- /dev/null
+++ b/modules/applications/gnome/home.nix
@@ -0,0 +1,56 @@
+{ pkgs, lib, ... }:
+lib.mkIf pkgs.stdenv.hostPlatform.isLinux {
+  dconf.settings = {
+    "org/gnome/desktop/sound" = {
+      event-sounds = false;
+      input-feedback-sounds = false;
+    };
+    "org/gnome/desktop/wm/keybindings" = {
+      close = [ "<Super>q" ];
+      show-desktop = [ ];
+    };
+    "org/gnome/settings-daemon/plugins/media-keys" = {
+      home = [ ];
+      screensaver = [ "<Super>l" ];
+      custom-keybindings = [
+        "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0/"
+        "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom1/"
+        "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom2/"
+        "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom3/"
+        "/org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom4/"
+      ];
+    };
+    "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom0" = {
+      name = "Open Terminal";
+      command = "ghostty";
+      binding = "<Super>t";
+    };
+    "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom1" = {
+      name = "Run Application";
+      command = "vicinae toggle";
+      binding = "<Super>d";
+    };
+    "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom2" = {
+      name = "Open File Manager";
+      command = "nautilus --new-window";
+      binding = "<Super>e";
+    };
+    "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom3" = {
+      name = "Clipboard History";
+      command = "vicinae vicinae://extensions/vicinae/clipboard/history";
+      binding = "<Super>v";
+    };
+    "org/gnome/settings-daemon/plugins/media-keys/custom-keybindings/custom4" = {
+      name = "Log Out";
+      command = "gnome-session-quit --logout --no-prompt";
+      binding = "<Super><Shift>e";
+    };
+    "org/gnome/shell".favorite-apps = [
+      "google-chrome.desktop"
+      "code.desktop"
+      "com.mitchellh.ghostty.desktop"
+      "slack.desktop"
+      "vesktop.desktop"
+    ];
+  };
+}
diff --git a/modules/applications/gnome/nixos.nix b/modules/applications/gnome/nixos.nix
new file mode 100644
index 0000000..501cbd7
--- /dev/null
+++ b/modules/applications/gnome/nixos.nix
@@ -0,0 +1,10 @@
+{ pkgs, lib, ... }:
+{
+  services.desktopManager.gnome.enable = true;
+  services.displayManager.gdm.enable = lib.mkForce false;
+
+  environment.systemPackages = [
+    pkgs.gnome-tweaks
+    pkgs.gnome-extension-manager
+  ];
+}
diff --git a/modules/applications/grok/home.nix b/modules/applications/grok/home.nix
new file mode 100644
index 0000000..7052a4d
--- /dev/null
+++ b/modules/applications/grok/home.nix
@@ -0,0 +1,9 @@
+{ inputs, pkgs, ... }:
+let
+  grok = inputs.llm-agents.packages.${pkgs.stdenv.hostPlatform.system}.grok.overrideAttrs (_: {
+    versionCheckProgram = "${placeholder "out"}/libexec/grok/grok-launcher";
+  });
+in
+{
+  home.packages = [ grok ];
+}
diff --git a/modules/applications/kde/darwin.nix b/modules/applications/kde/darwin.nix
new file mode 100644
index 0000000..a38ac33
--- /dev/null
+++ b/modules/applications/kde/darwin.nix
@@ -0,0 +1,6 @@
+{
+  homebrew = {
+    enable = true;
+    casks = [ "kde-connect" ];
+  };
+}
diff --git a/modules/applications/kde/nixos.nix b/modules/applications/kde/nixos.nix
new file mode 100644
index 0000000..0cb7c87
--- /dev/null
+++ b/modules/applications/kde/nixos.nix
@@ -0,0 +1,3 @@
+{
+  programs.kdeconnect.enable = true;
+}
diff --git a/modules/applications/nautilus/home.nix b/modules/applications/nautilus/home.nix
new file mode 100644
index 0000000..d24dd51
--- /dev/null
+++ b/modules/applications/nautilus/home.nix
@@ -0,0 +1,8 @@
+{ pkgs, lib, ... }:
+lib.mkIf pkgs.stdenv.hostPlatform.isLinux {
+  home.packages = [
+    pkgs.nautilus
+    pkgs.gvfs
+    pkgs.sushi
+  ];
+}
diff --git a/modules/applications/nh/home.nix b/modules/applications/nh/home.nix
new file mode 100644
index 0000000..e078327
--- /dev/null
+++ b/modules/applications/nh/home.nix
@@ -0,0 +1,5 @@
+{ config, pkgs, ... }:
+{
+  home.packages = [ pkgs.nh ];
+  home.sessionVariables.NH_FLAKE = "${config.home.homeDirectory}/dotfiles";
+}
diff --git a/modules/applications/nh/nixos.nix b/modules/applications/nh/nixos.nix
new file mode 100644
index 0000000..196c3f5
--- /dev/null
+++ b/modules/applications/nh/nixos.nix
@@ -0,0 +1,12 @@
+{ primaryUser, ... }:
+{
+  programs.nh = {
+    enable = true;
+    flake = "/home/${primaryUser}/dotfiles";
+    clean = {
+      enable = true;
+      dates = "weekly";
+      extraArgs = "--keep-since 14d --keep 10";
+    };
+  };
+}
diff --git a/modules/applications/opencode/home.nix b/modules/applications/opencode/home.nix
new file mode 100644
index 0000000..da192d5
--- /dev/null
+++ b/modules/applications/opencode/home.nix
@@ -0,0 +1,6 @@
+{ inputs, pkgs, ... }:
+{
+  home.packages = [
+    inputs.llm-agents.packages.${pkgs.stdenv.hostPlatform.system}.opencode
+  ];
+}
diff --git a/modules/applications/slack/home.nix b/modules/applications/slack/home.nix
new file mode 100644
index 0000000..4ff5f05
--- /dev/null
+++ b/modules/applications/slack/home.nix
@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.slack ];
+}
diff --git a/modules/applications/vicinae/home.nix b/modules/applications/vicinae/home.nix
new file mode 100644
index 0000000..491ecd4
--- /dev/null
+++ b/modules/applications/vicinae/home.nix
@@ -0,0 +1,56 @@
+{
+  inputs,
+  lib,
+  pkgs,
+  ...
+}:
+let
+  isLinux = pkgs.stdenv.hostPlatform.isLinux;
+  extensions = inputs.vicinae-extensions.packages.${pkgs.stdenv.hostPlatform.system};
+in
+{
+  programs.vicinae = {
+    enable = true;
+    systemd = lib.mkIf isLinux {
+      enable = true;
+      autoStart = true;
+      environment.USE_LAYER_SHELL = 1;
+    };
+    settings = {
+      font.size = 11;
+      close_on_focus_loss = true;
+      consider_preedit = true;
+      pop_to_root_on_close = true;
+      favicon_service = "twenty";
+      search_files_in_root = true;
+      theme = {
+        light = {
+          name = "dracula";
+          icon_theme = "default";
+        };
+        dark = {
+          name = "vicinae-light";
+          icon_theme = "default";
+        };
+      };
+      window = {
+        csd = true;
+        opacity = 0.95;
+        rounding = 10;
+      };
+    };
+    extensions =
+      with extensions;
+      [
+        nix
+        zoxide-recent-directories
+        ssh
+        port-killer
+      ]
+      ++ lib.optionals isLinux [
+        power-profile
+        niri
+        noctalia-shell-wallpaper-selector
+      ];
+  };
+}
diff --git a/modules/applications/vicinae/meta.nix b/modules/applications/vicinae/meta.nix
new file mode 100644
index 0000000..0f77d20
--- /dev/null
+++ b/modules/applications/vicinae/meta.nix
@@ -0,0 +1,8 @@
+{ inputs, ... }:
+{
+  description = "Vicinae application launcher";
+
+  imports.home = [
+    inputs.vicinae.homeManagerModules.default
+  ];
+}
diff --git a/modules/applications/yazi/home.nix b/modules/applications/yazi/home.nix
new file mode 100644
index 0000000..362cad5
--- /dev/null
+++ b/modules/applications/yazi/home.nix
@@ -0,0 +1,134 @@
+{ pkgs, lib, ... }:
+let
+  isLinux = pkgs.stdenv.hostPlatform.isLinux;
+in
+{
+  programs.yazi = {
+    enable = true;
+    enableZshIntegration = true;
+    shellWrapperName = "y";
+    package = pkgs.yazi.override {
+      _7zz = pkgs._7zz-rar;
+    };
+    extraPackages =
+      with pkgs;
+      [
+        file
+        ffmpeg
+        _7zz-rar
+        jq
+        poppler
+        fd
+        ripgrep
+        fzf
+        zoxide
+        resvg
+        imagemagick
+      ]
+      ++ lib.optionals isLinux [
+        wl-clipboard
+        xdg-utils
+      ];
+    plugins = {
+      "full-border" = {
+        package = pkgs.yaziPlugins.full-border;
+        setup = true;
+      };
+      "toggle-pane" = pkgs.yaziPlugins.toggle-pane;
+      chmod = pkgs.yaziPlugins.chmod;
+    };
+    keymap.mgr.prepend_keymap = [
+      {
+        on = "T";
+        run = "plugin toggle-pane max-preview";
+        desc = "Maximize or restore preview pane";
+      }
+      {
+        on = [
+          "c"
+          "m"
+        ];
+        run = "plugin chmod";
+        desc = "Chmod selected files";
+      }
+    ];
+    settings = {
+      mgr = {
+        ratio = [
+          1
+          3
+          4
+        ];
+        sort_by = "natural";
+        sort_sensitive = false;
+        sort_dir_first = true;
+        sort_reverse = false;
+        linemode = "size";
+        show_hidden = true;
+        show_symlink = true;
+        scrolloff = 8;
+      };
+      preview = {
+        wrap = "yes";
+        tab_size = 2;
+      };
+      opener = {
+        edit = [
+          {
+            run = "${pkgs.neovim}/bin/nvim %s";
+            block = true;
+            for = "unix";
+          }
+        ];
+        open = [
+          {
+            run = "${pkgs.xdg-utils}/bin/xdg-open %s";
+            orphan = true;
+            desc = "Open";
+            for = "linux";
+          }
+          {
+            run = "open %s";
+            orphan = true;
+            desc = "Open";
+            for = "macos";
+          }
+        ];
+      };
+      open.prepend_rules = [
+        {
+          mime = "text/*";
+          use = "edit";
+        }
+        {
+          url = "*.nix";
+          use = "edit";
+        }
+        {
+          url = "*.json";
+          use = "edit";
+        }
+        {
+          url = "*.md";
+          use = "edit";
+        }
+        {
+          mime = "image/*";
+          use = "open";
+        }
+        {
+          mime = "video/*";
+          use = "open";
+        }
+        {
+          mime = "audio/*";
+          use = "open";
+        }
+        {
+          mime = "application/pdf";
+          use = "open";
+        }
+      ];
+    };
+  };
+}
diff --git a/modules/applications/zoom/home.nix b/modules/applications/zoom/home.nix
new file mode 100644
index 0000000..78c6b5d
--- /dev/null
+++ b/modules/applications/zoom/home.nix
@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  home.packages = [ pkgs.zoom-us ];
+}
diff --git a/modules/applications/zoxide/home.nix b/modules/applications/zoxide/home.nix
new file mode 100644
index 0000000..f6fac1b
--- /dev/null
+++ b/modules/applications/zoxide/home.nix
@@ -0,0 +1,6 @@
+{
+  programs.zoxide = {
+    enable = true;
+    enableZshIntegration = true;
+  };
+}
diff --git a/modules/hardwares/intel-driver/nixos.nix b/modules/hardwares/intel-driver/nixos.nix
new file mode 100644
index 0000000..0f67851
--- /dev/null
+++ b/modules/hardwares/intel-driver/nixos.nix
@@ -0,0 +1,9 @@
+{ pkgs, ... }:
+{
+  hardware.graphics.extraPackages = with pkgs; [
+    intel-media-driver
+    intel-vaapi-driver
+    libva-vdpau-driver
+    libvdpau-va-gl
+  ];
+}
diff --git a/modules/services/docker/nixos.nix b/modules/services/docker/nixos.nix
new file mode 100644
index 0000000..5dbb2c1
--- /dev/null
+++ b/modules/services/docker/nixos.nix
@@ -0,0 +1,17 @@
+{ primaryUser, ... }:
+{
+  virtualisation.docker = {
+    enable = true;
+    autoPrune = {
+      enable = true;
+      dates = "weekly";
+    };
+    daemon.settings = {
+      ipv6 = true;
+      "fixed-cidr-v6" = "fd00:30::/64";
+      ip6tables = true;
+    };
+  };
+
+  users.users.${primaryUser}.extraGroups = [ "docker" ];
+}