diff --git a/UI/AboutWindow.axaml b/UI/AboutWindow.axaml
new file mode 100644
index 0000000..e0acc63
--- /dev/null
+++ b/UI/AboutWindow.axaml
@@ -0,0 +1,25 @@
+<Window xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+        mc:Ignorable="d" d:DesignWidth="400" d:DesignHeight="180"
+        Width="400" Height="180"
+        x:Class="UI.AboutWindow"
+        Title="AboutWindow">
+    <StackPanel HorizontalAlignment="Center" Margin="10">
+        <TextBlock FontSize="30" TextAlignment="Center">
+            Tag Hierarchy Manager
+        </TextBlock>
+        <TextBlock TextAlignment="Center">
+            (c) Flaky 2025
+            <LineBreak/><LineBreak/>
+            Licensed under MIT
+        </TextBlock>
+        <HyperlinkButton HorizontalContentAlignment="Center">
+            https://github.com/FlakyBlueJay/TagHierarchyManager
+        </HyperlinkButton>
+        <Button HorizontalAlignment="Center">OK</Button>
+    </StackPanel>
+    
+    
+</Window>
diff --git a/UI/AboutWindow.axaml.cs b/UI/AboutWindow.axaml.cs
new file mode 100644
index 0000000..3201fe5
--- /dev/null
+++ b/UI/AboutWindow.axaml.cs
@@ -0,0 +1,13 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Markup.Xaml;
+
+namespace UI;
+
+public partial class AboutWindow : Window
+{
+    public AboutWindow()
+    {
+        InitializeComponent();
+    }
+}
\ No newline at end of file