diff --git a/.gitignore b/.gitignore
index 0f84d98..d524ecc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,6 +40,9 @@ bld/
 # Uncomment if you have tasks that create the project's static files in wwwroot
 #wwwroot/
 
+# Visual Studio Code
+.vscode
+
 # Visual Studio 2017 auto generated files
 Generated\ Files/
 
diff --git a/FlowLauncher/Components/FlowIntegration/FirstLoadingPageAttribute.cs b/FlowLauncher/Components/FlowIntegration/FirstLoadingPageAttribute.cs
deleted file mode 100644
index 76c71a1..0000000
--- a/FlowLauncher/Components/FlowIntegration/FirstLoadingPageAttribute.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-using FlowLauncher.Components.UI;
-using FlowNet.Collector;
-
-namespace FlowLauncher.Components.FlowIntegration;
-
-/// <summary>
-/// Mark a view model class as a first-loading page, this class must have an empty
-/// constructor and implement <see cref="PageViewModel"/>.
-/// </summary>
-[CollectorMeta("FlowLauncher.Components.FlowIntegration.Page.RegisterFirstLoading")]
-[CollectorMeta.SupportsNamedType(TypeGenerationMode.EmptyConstructor, true)]
-[CollectorMeta.SupportsMethod<Func<PageViewModel>>]
-[AttributeUsage(AttributeTargets.Class)]
-public sealed class FirstLoadingPageAttribute : Attribute;
diff --git a/FlowLauncher/Components/FlowIntegration/Page.cs b/FlowLauncher/Components/FlowIntegration/Page.cs
index 6f74a01..46c0242 100644
--- a/FlowLauncher/Components/FlowIntegration/Page.cs
+++ b/FlowLauncher/Components/FlowIntegration/Page.cs
@@ -1,4 +1,5 @@
 using FlowLauncher.Components.UI;
+using FlowNet.Collector;
 
 namespace FlowLauncher.Components.FlowIntegration;
 
@@ -16,3 +17,22 @@ public static Task Register(PageViewModel page)
         return Task.CompletedTask;
     }
 }
+
+/// <summary>
+/// Mark a view model class as a first-loading page, this class must have an empty
+/// constructor and implement <see cref="PageViewModel"/>.
+/// </summary>
+[CollectorMeta("FlowLauncher.Components.FlowIntegration.Page.RegisterFirstLoading")]
+[CollectorMeta.SupportsNamedType(TypeGenerationMode.EmptyConstructor, true)]
+[CollectorMeta.SupportsMethod<Func<PageViewModel>>]
+[AttributeUsage(AttributeTargets.Class)]
+public sealed class FirstLoadingPageAttribute : Attribute;
+
+/// <summary>
+/// Mark a view model class as a page, this class must have an empty constructor and
+/// implement <see cref="PageViewModel"/>.
+/// </summary>
+[CollectorMeta("FlowLauncher.Components.FlowIntegration.Page.RegisterFirstLoading")]
+[CollectorMeta.SupportsNamedType(TypeGenerationMode.EmptyConstructor)]
+[AttributeUsage(AttributeTargets.Class)]
+public sealed class PageAttribute : Attribute;
diff --git a/FlowLauncher/Components/FlowIntegration/PageAttribute.cs b/FlowLauncher/Components/FlowIntegration/PageAttribute.cs
deleted file mode 100644
index ee4aeb1..0000000
--- a/FlowLauncher/Components/FlowIntegration/PageAttribute.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-using FlowLauncher.Components.UI;
-using FlowNet.Collector;
-
-namespace FlowLauncher.Components.FlowIntegration;
-
-/// <summary>
-/// Mark a view model class as a page, this class must have an empty constructor and
-/// implement <see cref="PageViewModel"/>.
-/// </summary>
-[CollectorMeta("FlowLauncher.Components.FlowIntegration.Page.RegisterFirstLoading")]
-[CollectorMeta.SupportsNamedType(TypeGenerationMode.EmptyConstructor)]
-[AttributeUsage(AttributeTargets.Class)]
-public sealed class PageAttribute : Attribute;
diff --git a/FlowLauncher/Components/FlowIntegration/PlatformSelector.cs b/FlowLauncher/Components/FlowIntegration/PlatformSelector.cs
new file mode 100644
index 0000000..2caf396
--- /dev/null
+++ b/FlowLauncher/Components/FlowIntegration/PlatformSelector.cs
@@ -0,0 +1,45 @@
+using System.Runtime.InteropServices;
+using FlowNet.Collector;
+
+namespace FlowLauncher.Components.FlowIntegration;
+
+// ReSharper disable InconsistentNaming
+public enum FlowPlatform
+{
+    Windows = 0,
+    Linux = 1,
+    MacOS = 2,
+    FreeBSD = 3,
+}
+// ReSharper restore InconsistentNaming
+
+[Flow.Scope("fl:tool:platform-selector")]
+public static partial class PlatformSelector
+{
+    private static readonly OSPlatform[] PlatformEnum = [
+        OSPlatform.Windows,
+        OSPlatform.Linux,
+        OSPlatform.OSX,
+        OSPlatform.FreeBSD
+    ];
+
+    [Flow.Task]
+    private static Task<bool> StartsWith(params IEnumerable<string> prefix)
+        => Task.FromResult(prefix.Any(RuntimeInformation.RuntimeIdentifier.StartsWith));
+
+    [Flow.Task]
+    private static Task<bool> Is(params IEnumerable<FlowPlatform> platform)
+        => Task.FromResult(platform.Any(p => RuntimeInformation.IsOSPlatform(PlatformEnum[(int)p])));
+
+#pragma warning disable CS9113 // Parameter is unread.
+
+    [AttributeUsage(AttributeTargets.All)]
+    [CollectionFilterMeta("fl:tool:platform-selector:starts-with")]
+    public sealed class StartsWithAttribute(params string[] prefix) : Attribute;
+
+    [AttributeUsage(AttributeTargets.All)]
+    [CollectionFilterMeta("fl:tool:platform-selector:is")]
+    public sealed class IsAttribute(params FlowPlatform[] platform) : Attribute;
+
+#pragma warning restore CS9113 // Parameter is unread.
+}
diff --git a/FlowLauncher/Components/FlowIntegration/PlatformWindow.cs b/FlowLauncher/Components/FlowIntegration/PlatformWindow.cs
new file mode 100644
index 0000000..dfd4b6e
--- /dev/null
+++ b/FlowLauncher/Components/FlowIntegration/PlatformWindow.cs
@@ -0,0 +1,21 @@
+using Avalonia.Controls;
+using FlowNet.Collector;
+
+namespace FlowLauncher.Components.FlowIntegration;
+
+public static class PlatformWindow
+{
+
+    public static Task SetCurrentSessionWindowFactory(Func<Window> window)
+    {
+        Program.CurrentSessionWindowFactory = window;
+        return Task.CompletedTask;
+    }
+}
+
+[CollectorMeta("FlowLauncher.Components.FlowIntegration.PlatformWindow.SetCurrentSessionWindowFactory")]
+[CollectorMeta.RequiresAttr(typeof(PlatformSelector.IsAttribute))]
+[CollectorMeta.SupportsMethod<Func<Window>>]
+[CollectorMeta.SupportsNamedType(TypeGenerationMode.EmptyConstructor, true)]
+[AttributeUsage(AttributeTargets.Class)]
+public sealed class PlatformWindowAttribute : Attribute;
diff --git a/FlowLauncher/Components/Platforms/LinuxWindow.axaml.cs b/FlowLauncher/Components/Platforms/LinuxWindow.axaml.cs
index e745d69..bb3955f 100644
--- a/FlowLauncher/Components/Platforms/LinuxWindow.axaml.cs
+++ b/FlowLauncher/Components/Platforms/LinuxWindow.axaml.cs
@@ -1,7 +1,10 @@
+using FlowLauncher.Components.FlowIntegration;
 using FlowLauncher.Components.UI;
 
 namespace FlowLauncher.Components.Platforms;
 
+[PlatformSelector.Is(FlowPlatform.Linux)]
+[PlatformWindow]
 public sealed partial class LinuxWindow : BaseWindow
 {
     public LinuxWindow()
diff --git a/FlowLauncher/Components/Platforms/MacWindow.axaml.cs b/FlowLauncher/Components/Platforms/MacWindow.axaml.cs
index 4a2c465..0efc13e 100644
--- a/FlowLauncher/Components/Platforms/MacWindow.axaml.cs
+++ b/FlowLauncher/Components/Platforms/MacWindow.axaml.cs
@@ -1,10 +1,13 @@
 using Avalonia.Interactivity;
 using Avalonia.Media;
 using Avalonia.Threading;
+using FlowLauncher.Components.FlowIntegration;
 using FlowLauncher.Components.UI;
 
 namespace FlowLauncher.Components.Platforms;
 
+[PlatformSelector.Is(FlowPlatform.MacOS)]
+[PlatformWindow]
 public sealed partial class MacWindow : BaseWindow
 {
     public MacWindow()
diff --git a/FlowLauncher/Components/Platforms/WindowsWindow.axaml.cs b/FlowLauncher/Components/Platforms/WindowsWindow.axaml.cs
index e7dbcca..c98b865 100644
--- a/FlowLauncher/Components/Platforms/WindowsWindow.axaml.cs
+++ b/FlowLauncher/Components/Platforms/WindowsWindow.axaml.cs
@@ -3,10 +3,13 @@
 using Avalonia.Interactivity;
 using Avalonia.Media;
 using Avalonia.Threading;
+using FlowLauncher.Components.FlowIntegration;
 using FlowLauncher.Components.UI;
 
 namespace FlowLauncher.Components.Platforms;
 
+[PlatformSelector.Is(FlowPlatform.Windows)]
+[PlatformWindow]
 public sealed partial class WindowsWindow : BaseWindow
 {
     public static readonly StyledProperty<bool> UseNativeWindowFrameProperty =
diff --git a/FlowLauncher/FlowLauncher.csproj b/FlowLauncher/FlowLauncher.csproj
index e6e0fe8..9099b92 100644
--- a/FlowLauncher/FlowLauncher.csproj
+++ b/FlowLauncher/FlowLauncher.csproj
@@ -78,7 +78,7 @@
         </PackageReference>
         <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.2"/>
         <PackageReference Include="FlowNet.Core" Version="0.2.2"/>
-        <PackageReference Include="FlowNet.Collector" Version="0.2.0"/>
+        <PackageReference Include="FlowNet.Collector" Version="0.2.1"/>
         <PackageReference Include="CmlLib.Core" Version="4.0.6"/>
         <PackageReference Include="SharpZipLib" Version="1.4.2"/>
     </ItemGroup>
diff --git a/FlowLauncher/Program.cs b/FlowLauncher/Program.cs
index 67491eb..ecd46ad 100644
--- a/FlowLauncher/Program.cs
+++ b/FlowLauncher/Program.cs
@@ -2,7 +2,6 @@
 using Avalonia;
 using Avalonia.Controls;
 using Avalonia.Threading;
-using FlowLauncher.Components.Platforms;
 
 namespace FlowLauncher;
 
@@ -68,13 +67,13 @@ private static void AppMain(Application application, string[] args)
         OnProgramExit.SetResult();
     }
 
+    internal static Func<Window>? CurrentSessionWindowFactory { private get; set; } = null;
+
     private static void CreateMainWindow()
     {
-        Window mainWindow;
-        if (OperatingSystem.IsWindows()) mainWindow = new WindowsWindow();
-        else if (OperatingSystem.IsMacOS()) mainWindow = new MacWindow();
-        else if (OperatingSystem.IsLinux()) mainWindow = new LinuxWindow();
-        else throw new NotSupportedException($"Platform not supported: {RuntimeInformation.OSDescription}");
+        if (CurrentSessionWindowFactory == null)
+            throw new NotSupportedException($"Platform not supported: {RuntimeInformation.OSDescription}");
+        var mainWindow = CurrentSessionWindowFactory();
         mainWindow.Show();
     }