diff --git a/src/SMAPI.Tests/StardewModdingAPI.Tests.csproj b/src/SMAPI.Tests/StardewModdingAPI.Tests.csproj
index f4d7b3e3..04c8d12f 100644
--- a/src/SMAPI.Tests/StardewModdingAPI.Tests.csproj
+++ b/src/SMAPI.Tests/StardewModdingAPI.Tests.csproj
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\packages\NUnit.3.10.1\build\NUnit.props" Condition="Exists('..\packages\NUnit.3.10.1\build\NUnit.props')" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
@@ -56,7 +56,7 @@
     <Compile Include="..\..\build\GlobalAssemblyInfo.cs">
       <Link>Properties\GlobalAssemblyInfo.cs</Link>
     </Compile>
-    <Compile Include="Core\PathUtilitiesTests.cs" />
+    <Compile Include="Toolkit\PathUtilitiesTests.cs" />
     <Compile Include="Utilities\SemanticVersionTests.cs" />
     <Compile Include="Utilities\SDateTests.cs" />
     <Compile Include="Core\TranslationTests.cs" />
@@ -73,6 +73,10 @@
       <Project>{f1a573b0-f436-472c-ae29-0b91ea6b9f8f}</Project>
       <Name>StardewModdingAPI</Name>
     </ProjectReference>
+    <ProjectReference Include="..\StardewModdingAPI.Toolkit\StardewModdingAPI.Toolkit.csproj">
+      <Project>{ea5cfd2e-9453-4d29-b80f-8e0ea23f4ac6}</Project>
+      <Name>StardewModdingAPI.Toolkit</Name>
+    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <Service Include="{82A7F48D-3B50-4B1E-B82E-3ADA8210C358}" />
diff --git a/src/SMAPI.Tests/Core/PathUtilitiesTests.cs b/src/SMAPI.Tests/Toolkit/PathUtilitiesTests.cs
similarity index 97%
rename from src/SMAPI.Tests/Core/PathUtilitiesTests.cs
rename to src/SMAPI.Tests/Toolkit/PathUtilitiesTests.cs
index 268ba504..229b9a14 100644
--- a/src/SMAPI.Tests/Core/PathUtilitiesTests.cs
+++ b/src/SMAPI.Tests/Toolkit/PathUtilitiesTests.cs
@@ -1,7 +1,7 @@
 using NUnit.Framework;
-using StardewModdingAPI.Framework.Utilities;
+using StardewModdingAPI.Toolkit.Utilities;
 
-namespace StardewModdingAPI.Tests.Core
+namespace StardewModdingAPI.Tests.Toolkit
 {
     /// <summary>Unit tests for <see cref="PathUtilities"/>.</summary>
     [TestFixture]
diff --git a/src/SMAPI/Framework/Content/ContentCache.cs b/src/SMAPI/Framework/Content/ContentCache.cs
index c2818cdd..a5dfac9d 100644
--- a/src/SMAPI/Framework/Content/ContentCache.cs
+++ b/src/SMAPI/Framework/Content/ContentCache.cs
@@ -4,8 +4,8 @@ using System.Diagnostics.Contracts;
 using System.Linq;
 using Microsoft.Xna.Framework;
 using StardewModdingAPI.Framework.Reflection;
-using StardewModdingAPI.Framework.Utilities;
 using StardewModdingAPI.Internal;
+using StardewModdingAPI.Toolkit.Utilities;
 using StardewValley;
 
 namespace StardewModdingAPI.Framework.Content
diff --git a/src/SMAPI/Framework/ContentCoordinator.cs b/src/SMAPI/Framework/ContentCoordinator.cs
index c2614001..1a57dd22 100644
--- a/src/SMAPI/Framework/ContentCoordinator.cs
+++ b/src/SMAPI/Framework/ContentCoordinator.cs
@@ -9,10 +9,9 @@ using Microsoft.Xna.Framework.Graphics;
 using StardewModdingAPI.Framework.Content;
 using StardewModdingAPI.Framework.ContentManagers;
 using StardewModdingAPI.Framework.Reflection;
-using StardewModdingAPI.Framework.Utilities;
 using StardewModdingAPI.Metadata;
+using StardewModdingAPI.Toolkit.Utilities;
 using StardewValley;
-using xTile;
 
 namespace StardewModdingAPI.Framework
 {
diff --git a/src/SMAPI/Framework/ContentPack.cs b/src/SMAPI/Framework/ContentPack.cs
index 071fb872..ee6df1ec 100644
--- a/src/SMAPI/Framework/ContentPack.cs
+++ b/src/SMAPI/Framework/ContentPack.cs
@@ -3,7 +3,7 @@ using System.IO;
 using Microsoft.Xna.Framework.Content;
 using Microsoft.Xna.Framework.Graphics;
 using StardewModdingAPI.Framework.Serialisation;
-using StardewModdingAPI.Framework.Utilities;
+using StardewModdingAPI.Toolkit.Utilities;
 using xTile;
 
 namespace StardewModdingAPI.Framework
diff --git a/src/SMAPI/Framework/ModHelpers/ContentHelper.cs b/src/SMAPI/Framework/ModHelpers/ContentHelper.cs
index ce26c980..671dc21e 100644
--- a/src/SMAPI/Framework/ModHelpers/ContentHelper.cs
+++ b/src/SMAPI/Framework/ModHelpers/ContentHelper.cs
@@ -9,7 +9,7 @@ using Microsoft.Xna.Framework.Content;
 using Microsoft.Xna.Framework.Graphics;
 using StardewModdingAPI.Framework.ContentManagers;
 using StardewModdingAPI.Framework.Exceptions;
-using StardewModdingAPI.Framework.Utilities;
+using StardewModdingAPI.Toolkit.Utilities;
 using StardewValley;
 using xTile;
 using xTile.Format;
diff --git a/src/SMAPI/Framework/ModHelpers/ModHelper.cs b/src/SMAPI/Framework/ModHelpers/ModHelper.cs
index 26fe7198..61d2075c 100644
--- a/src/SMAPI/Framework/ModHelpers/ModHelper.cs
+++ b/src/SMAPI/Framework/ModHelpers/ModHelper.cs
@@ -4,7 +4,7 @@ using System.IO;
 using System.Linq;
 using StardewModdingAPI.Framework.Models;
 using StardewModdingAPI.Framework.Serialisation;
-using StardewModdingAPI.Framework.Utilities;
+using StardewModdingAPI.Toolkit.Utilities;
 
 namespace StardewModdingAPI.Framework.ModHelpers
 {
@@ -157,13 +157,13 @@ namespace StardewModdingAPI.Framework.ModHelpers
             this.DeprecationManager.Warn($"{nameof(IModHelper)}.{nameof(IModHelper.CreateTransitionalContentPack)}", "2.5", DeprecationLevel.Notice);
 
             // validate
-            if(string.IsNullOrWhiteSpace(directoryPath))
+            if (string.IsNullOrWhiteSpace(directoryPath))
                 throw new ArgumentNullException(nameof(directoryPath));
-            if(string.IsNullOrWhiteSpace(id))
+            if (string.IsNullOrWhiteSpace(id))
                 throw new ArgumentNullException(nameof(id));
-            if(string.IsNullOrWhiteSpace(name))
+            if (string.IsNullOrWhiteSpace(name))
                 throw new ArgumentNullException(nameof(name));
-            if(!Directory.Exists(directoryPath))
+            if (!Directory.Exists(directoryPath))
                 throw new ArgumentException($"Can't create content pack for directory path '{directoryPath}' because no such directory exists.");
 
             // create manifest
diff --git a/src/SMAPI/Framework/ModLoading/ModResolver.cs b/src/SMAPI/Framework/ModLoading/ModResolver.cs
index b5339183..d46caa55 100644
--- a/src/SMAPI/Framework/ModLoading/ModResolver.cs
+++ b/src/SMAPI/Framework/ModLoading/ModResolver.cs
@@ -7,7 +7,7 @@ using StardewModdingAPI.Framework.Exceptions;
 using StardewModdingAPI.Framework.ModData;
 using StardewModdingAPI.Framework.Models;
 using StardewModdingAPI.Framework.Serialisation;
-using StardewModdingAPI.Framework.Utilities;
+using StardewModdingAPI.Toolkit.Utilities;
 
 namespace StardewModdingAPI.Framework.ModLoading
 {
diff --git a/src/SMAPI/Program.cs b/src/SMAPI/Program.cs
index aeb9b9fb..a1cfcf0c 100644
--- a/src/SMAPI/Program.cs
+++ b/src/SMAPI/Program.cs
@@ -25,9 +25,9 @@ using StardewModdingAPI.Framework.ModHelpers;
 using StardewModdingAPI.Framework.ModLoading;
 using StardewModdingAPI.Framework.Reflection;
 using StardewModdingAPI.Framework.Serialisation;
-using StardewModdingAPI.Framework.Utilities;
 using StardewModdingAPI.Internal;
 using StardewModdingAPI.Internal.Models;
+using StardewModdingAPI.Toolkit.Utilities;
 using StardewValley;
 using Monitor = StardewModdingAPI.Framework.Monitor;
 using SObject = StardewValley.Object;
diff --git a/src/SMAPI/StardewModdingAPI.csproj b/src/SMAPI/StardewModdingAPI.csproj
index 926bcbbc..3e6fdb24 100644
--- a/src/SMAPI/StardewModdingAPI.csproj
+++ b/src/SMAPI/StardewModdingAPI.csproj
@@ -157,7 +157,6 @@
     <Compile Include="Framework\StateTracking\LocationTracker.cs" />
     <Compile Include="Framework\StateTracking\PlayerTracker.cs" />
     <Compile Include="Framework\Utilities\ContextHash.cs" />
-    <Compile Include="Framework\Utilities\PathUtilities.cs" />
     <Compile Include="IContentPack.cs" />
     <Compile Include="IManifestContentPackFor.cs" />
     <Compile Include="IMultiplayerHelper.cs" />
diff --git a/src/SMAPI/Framework/Utilities/PathUtilities.cs b/src/StardewModdingAPI.Toolkit/Utilities/PathUtilities.cs
similarity index 97%
rename from src/SMAPI/Framework/Utilities/PathUtilities.cs
rename to src/StardewModdingAPI.Toolkit/Utilities/PathUtilities.cs
index 51d45ebd..2e74e7d9 100644
--- a/src/SMAPI/Framework/Utilities/PathUtilities.cs
+++ b/src/StardewModdingAPI.Toolkit/Utilities/PathUtilities.cs
@@ -3,10 +3,10 @@ using System.Diagnostics.Contracts;
 using System.IO;
 using System.Linq;
 
-namespace StardewModdingAPI.Framework.Utilities
+namespace StardewModdingAPI.Toolkit.Utilities
 {
     /// <summary>Provides utilities for normalising file paths.</summary>
-    internal static class PathUtilities
+    public static class PathUtilities
     {
         /*********
         ** Properties