diff --git a/home/personal.nix b/home/personal.nix
index 60eb787..5caf9f9 100644
--- a/home/personal.nix
+++ b/home/personal.nix
@@ -70,6 +70,10 @@
       username = "morten";
       passwordFile = "/Users/alice/Library/Application Support/jellyfin-tui/pass";
     };
+
+    zen-browser = {
+      enable = true;
+    }
   };
 
   # Personal-only packages
diff --git a/hosts/personal/default.nix b/hosts/personal/default.nix
index c9fde21..a117d8d 100644
--- a/hosts/personal/default.nix
+++ b/hosts/personal/default.nix
@@ -11,136 +11,10 @@
 }: {
   # Import darwin modules
   imports = [
+    ../../modules/darwin/system.nix
     ../../modules/darwin/homebrew.nix
   ];
 
-  # Nix configuration
-  nix = {
-    settings = {
-      # Enable flakes and new nix command
-      experimental-features = ["nix-command" "flakes"];
-      # Avoid unwanted garbage collection when using nix-direnv
-      keep-outputs = true;
-      keep-derivations = true;
-    };
-  };
-
-  # Allow unfree packages
-  nixpkgs.config.allowUnfree = true;
-
-  system = {
-    primaryUser = username;
-    keyboard = {
-      enableKeyMapping = true;
-      remapCapsLockToControl = true;
-    };
-    startup.chime = false;
-
-    defaults = {
-      spaces.spans-displays = false;
-      loginwindow = {
-        GuestEnabled = false;
-        DisableConsoleAccess = true;
-      };
-
-
-      dock = {
-        autohide = true;
-        autohide-delay = 0.0;
-        autohide-time-modifier = 0.0;
-        orientation = "bottom";
-        dashboard-in-overlay = true;
-        largesize = 85;
-        tilesize = 50;
-        magnification = true;
-        launchanim = false;
-        mru-spaces = false;
-        show-recents = false;
-        show-process-indicators = false;
-        static-only = true;
-      };
-
-      finder = {
-        AppleShowAllExtensions = true;
-        AppleShowAllFiles = true;
-        CreateDesktop = false;
-        FXDefaultSearchScope = "SCcf"; # current folder
-        QuitMenuItem = true;
-      };
-
-      NSGlobalDomain = {
-        NSAutomaticSpellingCorrectionEnabled = false;
-        NSAutomaticCapitalizationEnabled = false;
-        NSAutomaticPeriodSubstitutionEnabled = false;
-        NSAutomaticDashSubstitutionEnabled = false;
-        NSAutomaticQuoteSubstitutionEnabled = false;
-        NSAutomaticWindowAnimationsEnabled = false;
-        NSDocumentSaveNewDocumentsToCloud = false;
-        ApplePressAndHoldEnabled = false;
-
-        KeyRepeat = 2;
-        InitialKeyRepeat = 10;
-        # Enable subpixel font rendering on non-Apple LCDs
-        # Reference: https://github.com/kevinSuttle/macOS-Defaults/issues/17#issuecomment-266633501
-        AppleFontSmoothing = 2;
-        # Finder: show all filename extensions
-        AppleShowAllExtensions = true;
-      };
-      CustomUserPreferences = {
-        LaunchServices = {
-          # Whether to enable quarantine for downloaded applications
-          LSQuarantine = false;
-        };
-        trackpad = {
-          Clicking = true;
-          TrackpadRightClick = true;
-        };
-        "com.apple.systempreferences" = {
-          # Disable Resume system-wide
-          NSQuitAlwaysKeepsWindows = false;
-        };
-        "com.apple.desktopservices" = {
-          # Avoid creating .DS_Store files on network or USB volumes
-          DSDontWriteNetworkStores = true;
-          DSDontWriteUSBStores = true;
-        };
-        "com.apple.screensaver" = {
-          # Require password immediately after sleep or screen saver begins
-          askForPassword = 1;
-          askForPasswordDelay = 0;
-        };
-        "com.apple.AdLib" = {
-          # Don't fucking track me...
-          allowApplePersonalizedAdvertising = false;
-        };
-        "com.apple.BluetoothAudioAgent" = {
-          # Increase sound quality for Bluetooth headphones/headsets
-          "Apple Bitpool Min (editable)" = -40;
-        };
-        "com.apple.dashboard" = {
-          # Disable Dashboard
-          mcx-disabled = true;
-        };
-        alf = {
-          # Enables Firewall
-          globalstate = 1;
-          # Enable logging of requests
-          loggingenabled = 1;
-          # Drops incoming requests via ICMP such as ping requests
-          stealthenabled = 1;
-        };
-      };
-    };
-  };
-
-  users.users.${username} = {
-    name = username;
-    home = "/Users/${username}";
-    openssh.authorizedKeys.keys = [
-      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFaIAP/ZJ7+7jeR44e1yIJjfQAB6MN351LDKJAXVF62P"
-      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILAzuPy7D/54GxMq9Zhz0CUjaDnEQ6RkQ/yqVYl7U55k"
-    ];
-  };
 
   # System-level programs
   programs = {
diff --git a/hosts/work/default.nix b/hosts/work/default.nix
index fdcb1cd..0e4805b 100644
--- a/hosts/work/default.nix
+++ b/hosts/work/default.nix
@@ -11,137 +11,10 @@
 }: {
   # Import darwin modules
   imports = [
+    ../../modules/darwin/system.nix
     ../../modules/darwin/homebrew.nix
   ];
 
-  # Nix configuration
-  nix = {
-    settings = {
-      # Enable flakes and new nix command
-      experimental-features = ["nix-command" "flakes"];
-      # Avoid unwanted garbage collection when using nix-direnv
-      keep-outputs = true;
-      keep-derivations = true;
-    };
-  };
-
-  # Allow unfree packages
-  nixpkgs.config.allowUnfree = true;
-
-  system = {
-    primaryUser = username;
-    keyboard = {
-      enableKeyMapping = true;
-      remapCapsLockToControl = true;
-    };
-    startup.chime = false;
-
-    defaults = {
-      spaces.spans-displays = false;
-      loginwindow = {
-        GuestEnabled = false;
-        DisableConsoleAccess = true;
-      };
-
-
-      dock = {
-        autohide = true;
-        autohide-delay = 0.0;
-        autohide-time-modifier = 0.0;
-        orientation = "bottom";
-        dashboard-in-overlay = true;
-        largesize = 85;
-        tilesize = 50;
-        magnification = true;
-        launchanim = false;
-        mru-spaces = false;
-        show-recents = false;
-        show-process-indicators = false;
-        static-only = true;
-      };
-
-      finder = {
-        AppleShowAllExtensions = true;
-        AppleShowAllFiles = true;
-        CreateDesktop = false;
-        FXDefaultSearchScope = "SCcf"; # current folder
-        QuitMenuItem = true;
-      };
-
-      NSGlobalDomain = {
-        NSAutomaticSpellingCorrectionEnabled = false;
-        NSAutomaticCapitalizationEnabled = false;
-        NSAutomaticPeriodSubstitutionEnabled = false;
-        NSAutomaticDashSubstitutionEnabled = false;
-        NSAutomaticQuoteSubstitutionEnabled = false;
-        NSAutomaticWindowAnimationsEnabled = false;
-        NSDocumentSaveNewDocumentsToCloud = false;
-        ApplePressAndHoldEnabled = false;
-
-        KeyRepeat = 2;
-        InitialKeyRepeat = 10;
-        # Enable subpixel font rendering on non-Apple LCDs
-        # Reference: https://github.com/kevinSuttle/macOS-Defaults/issues/17#issuecomment-266633501
-        AppleFontSmoothing = 2;
-        # Finder: show all filename extensions
-        AppleShowAllExtensions = true;
-      };
-      CustomUserPreferences = {
-        LaunchServices = {
-          # Whether to enable quarantine for downloaded applications
-          LSQuarantine = false;
-        };
-        trackpad = {
-          Clicking = true;
-          TrackpadRightClick = true;
-        };
-        "com.apple.systempreferences" = {
-          # Disable Resume system-wide
-          NSQuitAlwaysKeepsWindows = false;
-        };
-        "com.apple.desktopservices" = {
-          # Avoid creating .DS_Store files on network or USB volumes
-          DSDontWriteNetworkStores = true;
-          DSDontWriteUSBStores = true;
-        };
-        "com.apple.screensaver" = {
-          # Require password immediately after sleep or screen saver begins
-          askForPassword = 1;
-          askForPasswordDelay = 0;
-        };
-        "com.apple.AdLib" = {
-          # Don't fucking track me...
-          allowApplePersonalizedAdvertising = false;
-        };
-        "com.apple.BluetoothAudioAgent" = {
-          # Increase sound quality for Bluetooth headphones/headsets
-          "Apple Bitpool Min (editable)" = -40;
-        };
-        "com.apple.dashboard" = {
-          # Disable Dashboard
-          mcx-disabled = true;
-        };
-        alf = {
-          # Enables Firewall
-          globalstate = 1;
-          # Enable logging of requests
-          loggingenabled = 1;
-          # Drops incoming requests via ICMP such as ping requests
-          stealthenabled = 1;
-        };
-      };
-    };
-  };
-
-  users.users.${username} = {
-    name = username;
-    home = "/Users/${username}";
-    openssh.authorizedKeys.keys = [
-      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFaIAP/ZJ7+7jeR44e1yIJjfQAB6MN351LDKJAXVF62P"
-      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILAzuPy7D/54GxMq9Zhz0CUjaDnEQ6RkQ/yqVYl7U55k"
-    ];
-  };
-
   # System-level programs
   programs = {
     # Enable zsh as it's the default macOS shell
diff --git a/modules/darwin/system.nix b/modules/darwin/system.nix
new file mode 100644
index 0000000..46c6c30
--- /dev/null
+++ b/modules/darwin/system.nix
@@ -0,0 +1,145 @@
+# It sets up system-level configuration and integrates with home-manager.
+{
+  config,
+  pkgs,
+  lib,
+  username,
+  ...
+}: {
+  # Import darwin modules
+  imports = [
+    ../modules/darwin/homebrew.nix
+  ];
+
+  # Nix configuration
+  nix = {
+    settings = {
+      # Enable flakes and new nix command
+      experimental-features = ["nix-command" "flakes"];
+      # Avoid unwanted garbage collection when using nix-direnv
+      keep-outputs = true;
+      keep-derivations = true;
+    };
+  };
+
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;
+
+  system = {
+    primaryUser = username;
+    keyboard = {
+      enableKeyMapping = true;
+      remapCapsLockToControl = true;
+    };
+    startup.chime = false;
+
+    defaults = {
+      spaces.spans-displays = false;
+      loginwindow = {
+        GuestEnabled = false;
+        DisableConsoleAccess = true;
+      };
+
+
+      dock = {
+        autohide = true;
+        autohide-delay = 0.0;
+        autohide-time-modifier = 0.0;
+        orientation = "bottom";
+        dashboard-in-overlay = true;
+        largesize = 85;
+        tilesize = 50;
+        magnification = true;
+        launchanim = false;
+        mru-spaces = false;
+        show-recents = false;
+        show-process-indicators = false;
+        static-only = true;
+      };
+
+      finder = {
+        AppleShowAllExtensions = true;
+        AppleShowAllFiles = true;
+        CreateDesktop = false;
+        FXDefaultSearchScope = "SCcf"; # current folder
+        QuitMenuItem = true;
+      };
+
+      NSGlobalDomain = {
+        NSAutomaticSpellingCorrectionEnabled = false;
+        NSAutomaticCapitalizationEnabled = false;
+        NSAutomaticPeriodSubstitutionEnabled = false;
+        NSAutomaticDashSubstitutionEnabled = false;
+        NSAutomaticQuoteSubstitutionEnabled = false;
+        NSAutomaticWindowAnimationsEnabled = false;
+        NSDocumentSaveNewDocumentsToCloud = false;
+        ApplePressAndHoldEnabled = false;
+
+        KeyRepeat = 2;
+        InitialKeyRepeat = 10;
+        # Enable subpixel font rendering on non-Apple LCDs
+        # Reference: https://github.com/kevinSuttle/macOS-Defaults/issues/17#issuecomment-266633501
+        AppleFontSmoothing = 2;
+        # Finder: show all filename extensions
+        AppleShowAllExtensions = true;
+      };
+      CustomUserPreferences = {
+        LaunchServices = {
+          # Whether to enable quarantine for downloaded applications
+          LSQuarantine = false;
+        };
+        trackpad = {
+          Clicking = true;
+          TrackpadRightClick = true;
+        };
+        "com.apple.systempreferences" = {
+          # Disable Resume system-wide
+          NSQuitAlwaysKeepsWindows = false;
+        };
+        "com.apple.desktopservices" = {
+          # Avoid creating .DS_Store files on network or USB volumes
+          DSDontWriteNetworkStores = true;
+          DSDontWriteUSBStores = true;
+        };
+        "com.apple.screensaver" = {
+          # Require password immediately after sleep or screen saver begins
+          askForPassword = 1;
+          askForPasswordDelay = 0;
+        };
+        "com.apple.AdLib" = {
+          # Don't fucking track me...
+          allowApplePersonalizedAdvertising = false;
+        };
+        "com.apple.BluetoothAudioAgent" = {
+          # Increase sound quality for Bluetooth headphones/headsets
+          "Apple Bitpool Min (editable)" = -40;
+        };
+        "com.apple.dashboard" = {
+          # Disable Dashboard
+          mcx-disabled = true;
+        };
+        alf = {
+          # Enables Firewall
+          globalstate = 1;
+          # Enable logging of requests
+          loggingenabled = 1;
+          # Drops incoming requests via ICMP such as ping requests
+          stealthenabled = 1;
+        };
+      };
+    };
+  };
+
+  users.users.${username} = {
+    name = username;
+    home = "/Users/${username}";
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFaIAP/ZJ7+7jeR44e1yIJjfQAB6MN351LDKJAXVF62P"
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILAzuPy7D/54GxMq9Zhz0CUjaDnEQ6RkQ/yqVYl7U55k"
+    ];
+  };
+
+  # Used for backwards compatibility, read the changelog before changing.
+  # $ darwin-rebuild changelog
+  system.stateVersion = 5;
+}
diff --git a/modules/home/apps.nix b/modules/home/apps.nix
index 846fc70..f9b402e 100644
--- a/modules/home/apps.nix
+++ b/modules/home/apps.nix
@@ -21,6 +21,15 @@ in {
       };
     };
 
+    zen-browser = {
+      enable = lib.mkOption {
+        type = lib.types.bool;
+        default = true;
+        description = "Enable Zen Browser configuration (macOS only)";
+      };
+    };
+
+
     jellyfin-tui = {
       enable = lib.mkOption {
         type = lib.types.bool;