diff --git a/IPA.Loader/Config/Config.cs b/IPA.Loader/Config/Config.cs
index 81517381..858ab476 100644
--- a/IPA.Loader/Config/Config.cs
+++ b/IPA.Loader/Config/Config.cs
@@ -25,10 +25,11 @@ namespace IPA.Config
         }
 
         /// <summary>
-        /// Specifies that a particular parameter is preferred to be a specific type of <see cref="T:IPA.Config.IConfigProvider" />. If it is not available, also specifies backups. If none are available, the default is used.
+        /// Specifies that a particular parameter is preferred to use a particular <see cref="IConfigProvider" />. 
+        /// If it is not available, also specifies backups. If none are available, the default is used.
         /// </summary>
         [AttributeUsage(AttributeTargets.Parameter)]
-        public class PreferAttribute : Attribute
+        public sealed class PreferAttribute : Attribute
         {
             /// <summary>
             /// The order of preference for the config type. 
@@ -52,7 +53,7 @@ namespace IPA.Config
         /// Specifies a preferred config name, instead of using the plugin's name.
         /// </summary>
         [AttributeUsage(AttributeTargets.Parameter)]
-        public class NameAttribute : Attribute
+        public sealed class NameAttribute : Attribute
         {
             /// <summary>
             /// The name to use for the config.
@@ -96,8 +97,6 @@ namespace IPA.Config
             registeredProviders.Add(inst.Extension, inst);
         }
 
-        private static Dictionary<Config, FileInfo> files = new Dictionary<Config, FileInfo>();
-
         /// <summary>
         /// Gets a <see cref="Config"/> object using the specified list of preferred config types.
         /// </summary>
@@ -109,12 +108,10 @@ namespace IPA.Config
             var chosenExt = extensions.FirstOrDefault(s => registeredProviders.ContainsKey(s)) ?? "json";
             var provider = registeredProviders[chosenExt];
 
-            var config = new Config(configName, provider);
-
             var filename = Path.Combine(BeatSaber.UserDataPath, configName + "." + provider.Extension);
-            files.Add(config, new FileInfo(filename));
+            var config = new Config(configName, provider, new FileInfo(filename));
 
-            RegisterConfigObject(config);
+            ConfigRuntime.RegisterConfig(config);
 
             return config;
         }
@@ -130,11 +127,6 @@ namespace IPA.Config
             return GetConfigFor(modName, prefs);
         }
 
-        private static void RegisterConfigObject(Config obj)
-        {
-            // TODO: implement
-        }
-
         /// <summary>
         /// Gets the name associated with this <see cref="Config"/> object.
         /// </summary>
@@ -145,6 +137,7 @@ namespace IPA.Config
         public IConfigProvider Provider { get; private set; }
 
         internal readonly HashSet<IConfigStore> Stores = new HashSet<IConfigStore>();
+        internal readonly FileInfo File;
 
         /// <summary>
         /// Adds an <see cref="IConfigStore"/> to this <see cref="Config"/> object.
@@ -154,9 +147,9 @@ namespace IPA.Config
         /// otherwise <see langword="false"/></returns>
         public bool AddStore(IConfigStore store) => Stores.Add(store);
 
-        private Config(string name, IConfigProvider provider)
+        private Config(string name, IConfigProvider provider, FileInfo file)
         {
-            Name = name; Provider = provider;
+            Name = name; Provider = provider; File = file;
         }
     }
 }
diff --git a/IPA.Loader/Config/ConfigRuntime.cs b/IPA.Loader/Config/ConfigRuntime.cs
new file mode 100644
index 00000000..05b596c3
--- /dev/null
+++ b/IPA.Loader/Config/ConfigRuntime.cs
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.Concurrent;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Threading;
+
+namespace IPA.Config
+{
+    internal static class ConfigRuntime
+    {
+        private static readonly ConcurrentBag<Config> configs = new ConcurrentBag<Config>();
+        private static readonly AutoResetEvent memoryChangedWatcher = new AutoResetEvent(false);
+
+        public static void RegisterConfig(Config cfg)
+        {
+            configs.Add(cfg);
+            
+            // TODO: register file watcher, reset changed watcher
+        }
+
+    }
+}
diff --git a/IPA.Loader/IPA.Loader.csproj b/IPA.Loader/IPA.Loader.csproj
index cde1c398..a73ed13e 100644
--- a/IPA.Loader/IPA.Loader.csproj
+++ b/IPA.Loader/IPA.Loader.csproj
@@ -85,6 +85,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Config\Config.cs" />
+    <Compile Include="Config\ConfigRuntime.cs" />
     <Compile Include="Config\Providers\JsonConfigProvider.cs" />
     <Compile Include="Config\Data\List.cs" />
     <Compile Include="Config\Data\Map.cs" />
@@ -144,7 +145,7 @@
     <Compile Include="Updating\BeatMods\ApiEndpoint.cs" />
     <Compile Include="Updating\BeatMods\Updater.cs" />
     <Compile Include="Utilities\Extensions.cs" />
-    <Compile Include="Utilities\Synchronization.cs" />
+    <Compile Include="Utilities\Async\Synchronization.cs" />
     <Compile Include="Utilities\Utils.cs" />
     <Compile Include="Utilities\Win32.cs" />
   </ItemGroup>
@@ -179,8 +180,6 @@
   <ItemGroup>
     <None Include="icon_black.png" />
   </ItemGroup>
-  <ItemGroup>
-    <Folder Include="Utilities\Async\" />
-  </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
 </Project>
\ No newline at end of file
diff --git a/IPA.Loader/Utilities/Synchronization.cs b/IPA.Loader/Utilities/Async/Synchronization.cs
similarity index 100%
rename from IPA.Loader/Utilities/Synchronization.cs
rename to IPA.Loader/Utilities/Async/Synchronization.cs