diff --git a/CommunityToolkit.Common/Collections/IReadOnlyObservableGroup.cs b/CommunityToolkit.Mvvm/Collections/IReadOnlyObservableGroup.cs
similarity index 61%
rename from CommunityToolkit.Common/Collections/IReadOnlyObservableGroup.cs
rename to CommunityToolkit.Mvvm/Collections/IReadOnlyObservableGroup.cs
index 2519c5150..d7b9eda2b 100644
--- a/CommunityToolkit.Common/Collections/IReadOnlyObservableGroup.cs
+++ b/CommunityToolkit.Mvvm/Collections/IReadOnlyObservableGroup.cs
@@ -4,18 +4,15 @@
 
 using System.ComponentModel;
 
-namespace CommunityToolkit.Common.Collections;
+namespace CommunityToolkit.Mvvm.Collections;
 
 /// <summary>
 /// An interface for a grouped collection of items.
-/// It allows us to use x:Bind with <see cref="ObservableGroup{TKey, TValue}"/> and <see cref="ReadOnlyObservableGroup{TKey, TValue}"/> by providing
-/// a non-generic type that we can declare using x:DataType.
 /// </summary>
 public interface IReadOnlyObservableGroup : INotifyPropertyChanged
 {
     /// <summary>
-    /// Gets the key for the current collection, as an <see cref="object"/>.
-    /// It is immutable.
+    /// Gets the key for the current collection.
     /// </summary>
     object Key { get; }
 
diff --git a/CommunityToolkit.Common/Collections/ObservableGroupedCollectionExtensions.cs b/CommunityToolkit.Mvvm/Collections/ObservableGroupedCollectionExtensions.cs
similarity index 99%
rename from CommunityToolkit.Common/Collections/ObservableGroupedCollectionExtensions.cs
rename to CommunityToolkit.Mvvm/Collections/ObservableGroupedCollectionExtensions.cs
index 2eba7012e..44a2b436e 100644
--- a/CommunityToolkit.Common/Collections/ObservableGroupedCollectionExtensions.cs
+++ b/CommunityToolkit.Mvvm/Collections/ObservableGroupedCollectionExtensions.cs
@@ -7,7 +7,7 @@
 using System.Linq;
 using System.Runtime.CompilerServices;
 
-namespace CommunityToolkit.Common.Collections;
+namespace CommunityToolkit.Mvvm.Collections;
 
 /// <summary>
 /// The extensions methods to simplify the usage of <see cref="ObservableGroupedCollection{TKey, TValue}"/>.
diff --git a/CommunityToolkit.Common/Collections/ObservableGroupedCollection.cs b/CommunityToolkit.Mvvm/Collections/ObservableGroupedCollection{TKey,TValue}.cs
similarity index 97%
rename from CommunityToolkit.Common/Collections/ObservableGroupedCollection.cs
rename to CommunityToolkit.Mvvm/Collections/ObservableGroupedCollection{TKey,TValue}.cs
index b62af5749..5c3da18b4 100644
--- a/CommunityToolkit.Common/Collections/ObservableGroupedCollection.cs
+++ b/CommunityToolkit.Mvvm/Collections/ObservableGroupedCollection{TKey,TValue}.cs
@@ -8,7 +8,7 @@
 using System.Linq;
 using System.Runtime.CompilerServices;
 
-namespace CommunityToolkit.Common.Collections;
+namespace CommunityToolkit.Mvvm.Collections;
 
 /// <summary>
 /// An observable list of observable groups.
diff --git a/CommunityToolkit.Common/Collections/ObservableGroup.cs b/CommunityToolkit.Mvvm/Collections/ObservableGroup{TKey,TValue}.cs
similarity index 98%
rename from CommunityToolkit.Common/Collections/ObservableGroup.cs
rename to CommunityToolkit.Mvvm/Collections/ObservableGroup{TKey,TValue}.cs
index 6bdd10d41..71fdf782f 100644
--- a/CommunityToolkit.Common/Collections/ObservableGroup.cs
+++ b/CommunityToolkit.Mvvm/Collections/ObservableGroup{TKey,TValue}.cs
@@ -8,7 +8,7 @@
 using System.Diagnostics;
 using System.Linq;
 
-namespace CommunityToolkit.Common.Collections;
+namespace CommunityToolkit.Mvvm.Collections;
 
 /// <summary>
 /// An observable group.
diff --git a/CommunityToolkit.Common/Collections/ReadOnlyObservableGroupedCollection.cs b/CommunityToolkit.Mvvm/Collections/ReadOnlyObservableGroupedCollection{TKey,TValue}.cs
similarity index 99%
rename from CommunityToolkit.Common/Collections/ReadOnlyObservableGroupedCollection.cs
rename to CommunityToolkit.Mvvm/Collections/ReadOnlyObservableGroupedCollection{TKey,TValue}.cs
index 3780b12bf..f5be9a2e6 100644
--- a/CommunityToolkit.Common/Collections/ReadOnlyObservableGroupedCollection.cs
+++ b/CommunityToolkit.Mvvm/Collections/ReadOnlyObservableGroupedCollection{TKey,TValue}.cs
@@ -9,7 +9,7 @@
 using System.Diagnostics;
 using System.Linq;
 
-namespace CommunityToolkit.Common.Collections;
+namespace CommunityToolkit.Mvvm.Collections;
 
 /// <summary>
 /// A read-only list of groups.
diff --git a/CommunityToolkit.Common/Collections/ReadOnlyObservableGroup.cs b/CommunityToolkit.Mvvm/Collections/ReadOnlyObservableGroup{TKey,TValue}.cs
similarity index 97%
rename from CommunityToolkit.Common/Collections/ReadOnlyObservableGroup.cs
rename to CommunityToolkit.Mvvm/Collections/ReadOnlyObservableGroup{TKey,TValue}.cs
index 3c86efc8a..304e7e54d 100644
--- a/CommunityToolkit.Common/Collections/ReadOnlyObservableGroup.cs
+++ b/CommunityToolkit.Mvvm/Collections/ReadOnlyObservableGroup{TKey,TValue}.cs
@@ -6,7 +6,7 @@
 using System.Collections.ObjectModel;
 using System.Linq;
 
-namespace CommunityToolkit.Common.Collections;
+namespace CommunityToolkit.Mvvm.Collections;
 
 /// <summary>
 /// A read-only observable group. It associates a <see cref="Key"/> to a <see cref="ReadOnlyObservableCollection{T}"/>.
diff --git a/tests/CommunityToolkit.Common.UnitTests/Collections/IntGroup.cs b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/IntGroup.cs
similarity index 89%
rename from tests/CommunityToolkit.Common.UnitTests/Collections/IntGroup.cs
rename to tests/CommunityToolkit.Mvvm.UnitTests/Collections/IntGroup.cs
index 7ef0d446d..e76bee1da 100644
--- a/tests/CommunityToolkit.Common.UnitTests/Collections/IntGroup.cs
+++ b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/IntGroup.cs
@@ -5,7 +5,7 @@
 using System.Collections.Generic;
 using System.Linq;
 
-namespace CommunityToolkit.Common.UnitTests.Collections;
+namespace CommunityToolkit.Mvvm.UnitTests;
 
 public class IntGroup : List<int>, IGrouping<string, int>
 {
diff --git a/tests/CommunityToolkit.Common.UnitTests/Collections/ObservableGroupTests.cs b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ObservableGroupTests.cs
similarity index 97%
rename from tests/CommunityToolkit.Common.UnitTests/Collections/ObservableGroupTests.cs
rename to tests/CommunityToolkit.Mvvm.UnitTests/Collections/ObservableGroupTests.cs
index 2ee14ba35..f25a8f1df 100644
--- a/tests/CommunityToolkit.Common.UnitTests/Collections/ObservableGroupTests.cs
+++ b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ObservableGroupTests.cs
@@ -4,10 +4,10 @@
 
 using System.Collections.Specialized;
 using System.Linq;
-using CommunityToolkit.Common.Collections;
+using CommunityToolkit.Mvvm.Collections;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
-namespace CommunityToolkit.Common.UnitTests.Collections;
+namespace CommunityToolkit.Mvvm.UnitTests;
 
 [TestClass]
 public class ObservableGroupTests
diff --git a/tests/CommunityToolkit.Common.UnitTests/Collections/ObservableGroupedCollectionExtensionsTests.cs b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ObservableGroupedCollectionExtensionsTests.cs
similarity index 99%
rename from tests/CommunityToolkit.Common.UnitTests/Collections/ObservableGroupedCollectionExtensionsTests.cs
rename to tests/CommunityToolkit.Mvvm.UnitTests/Collections/ObservableGroupedCollectionExtensionsTests.cs
index f731d8473..43aa55afe 100644
--- a/tests/CommunityToolkit.Common.UnitTests/Collections/ObservableGroupedCollectionExtensionsTests.cs
+++ b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ObservableGroupedCollectionExtensionsTests.cs
@@ -4,10 +4,10 @@
 
 using System;
 using System.Linq;
-using CommunityToolkit.Common.Collections;
+using CommunityToolkit.Mvvm.Collections;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
-namespace CommunityToolkit.Common.UnitTests.Collections;
+namespace CommunityToolkit.Mvvm.UnitTests;
 
 [TestClass]
 public class ObservableGroupedCollectionExtensionsTests
diff --git a/tests/CommunityToolkit.Common.UnitTests/Collections/ObservableGroupedCollectionTests.cs b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ObservableGroupedCollectionTests.cs
similarity index 92%
rename from tests/CommunityToolkit.Common.UnitTests/Collections/ObservableGroupedCollectionTests.cs
rename to tests/CommunityToolkit.Mvvm.UnitTests/Collections/ObservableGroupedCollectionTests.cs
index 1f1b015d0..9df27d94e 100644
--- a/tests/CommunityToolkit.Common.UnitTests/Collections/ObservableGroupedCollectionTests.cs
+++ b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ObservableGroupedCollectionTests.cs
@@ -4,10 +4,10 @@
 
 using System.Collections.Generic;
 using System.Linq;
-using CommunityToolkit.Common.Collections;
+using CommunityToolkit.Mvvm.Collections;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
-namespace CommunityToolkit.Common.UnitTests.Collections;
+namespace CommunityToolkit.Mvvm.UnitTests;
 
 [TestClass]
 public class ObservableGroupedCollectionTests
diff --git a/tests/CommunityToolkit.Common.UnitTests/Collections/ReadOnlyObservableGroupTests.cs b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ReadOnlyObservableGroupTests.cs
similarity index 97%
rename from tests/CommunityToolkit.Common.UnitTests/Collections/ReadOnlyObservableGroupTests.cs
rename to tests/CommunityToolkit.Mvvm.UnitTests/Collections/ReadOnlyObservableGroupTests.cs
index e028000f3..c85c025d6 100644
--- a/tests/CommunityToolkit.Common.UnitTests/Collections/ReadOnlyObservableGroupTests.cs
+++ b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ReadOnlyObservableGroupTests.cs
@@ -6,10 +6,10 @@
 using System.Collections.ObjectModel;
 using System.Collections.Specialized;
 using System.Linq;
-using CommunityToolkit.Common.Collections;
+using CommunityToolkit.Mvvm.Collections;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
-namespace CommunityToolkit.Common.UnitTests.Collections;
+namespace CommunityToolkit.Mvvm.UnitTests;
 
 [TestClass]
 public class ReadOnlyObservableGroupTests
diff --git a/tests/CommunityToolkit.Common.UnitTests/Collections/ReadOnlyObservableGroupedCollectionTests.cs b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ReadOnlyObservableGroupedCollectionTests.cs
similarity index 99%
rename from tests/CommunityToolkit.Common.UnitTests/Collections/ReadOnlyObservableGroupedCollectionTests.cs
rename to tests/CommunityToolkit.Mvvm.UnitTests/Collections/ReadOnlyObservableGroupedCollectionTests.cs
index 7ec3935ca..50a261c4a 100644
--- a/tests/CommunityToolkit.Common.UnitTests/Collections/ReadOnlyObservableGroupedCollectionTests.cs
+++ b/tests/CommunityToolkit.Mvvm.UnitTests/Collections/ReadOnlyObservableGroupedCollectionTests.cs
@@ -9,10 +9,10 @@
 using System.Collections.Specialized;
 using System.ComponentModel;
 using System.Linq;
-using CommunityToolkit.Common.Collections;
+using CommunityToolkit.Mvvm.Collections;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
 
-namespace CommunityToolkit.Common.UnitTests.Collections;
+namespace CommunityToolkit.Mvvm.UnitTests;
 
 [TestClass]
 public class ReadOnlyObservableGroupedCollectionTests