diff --git a/dev/core/src/com/google/gwt/dev/cfg/ConditionWhenPropertyIs.java b/dev/core/src/com/google/gwt/dev/cfg/ConditionWhenPropertyIs.java
index 99a3b0c..0dbc561 100644
--- a/dev/core/src/com/google/gwt/dev/cfg/ConditionWhenPropertyIs.java
+++ b/dev/core/src/com/google/gwt/dev/cfg/ConditionWhenPropertyIs.java
@@ -49,7 +49,7 @@
   @Override
   public String toSource() {
     return String.format(
-        "BindingPropertiesProvider.getPropertyValue(\"%s\").equals(\"%s\")", propName, value);
+        "RuntimePropertyRegistry.getPropertyValue(\"%s\").equals(\"%s\")", propName, value);
   }
 
   @Override
diff --git a/dev/core/src/com/google/gwt/dev/cfg/PropertyProviderRegistratorGenerator.java b/dev/core/src/com/google/gwt/dev/cfg/PropertyProviderRegistratorGenerator.java
index a3792e7..0334210 100644
--- a/dev/core/src/com/google/gwt/dev/cfg/PropertyProviderRegistratorGenerator.java
+++ b/dev/core/src/com/google/gwt/dev/cfg/PropertyProviderRegistratorGenerator.java
@@ -91,20 +91,22 @@
 
     if (out != null) {
       out.println("package " + PACKAGE_PATH + ";");
-      out.println("import com.google.gwt.core.client.BindingPropertiesProvider;");
+      out.println("import com.google.gwt.core.client.RuntimePropertyRegistry;");
       out.println(
-          "import com.google.gwt.core.client.BindingPropertiesProvider.BindingPropertyProvider;");
+          "import com.google.gwt.core.client.RuntimePropertyRegistry.PropertyValueProvider;");
       out.println("public class " + typeName + " {");
 
       for (BindingProperty bindingProperty : newBindingProperties) {
         createPropertyProviderClass(logger, out, bindingProperty);
       }
+      // TODO(stalcup): create configuration property providers.
 
       out.println("  public static void register() {");
       for (String propertyProviderClassName : propertyProviderClassNames) {
-        out.println("    BindingPropertiesProvider.registerBindingPropertyProvider(new "
+        out.println("    RuntimePropertyRegistry.registerPropertyValueProvider(new "
             + propertyProviderClassName + "());");
       }
+      // TODO(stalcup): register configuration property providers.
       out.println("  }");
       out.println("}");
 
@@ -152,11 +154,11 @@
 
   private void createPropertyProviderClass(
       TreeLogger logger, PrintWriter out, BindingProperty bindingProperty) {
-    String bindingPropertyClassName = "BindingPropertyProvider" + propertyProviderClassNames.size();
+    String bindingPropertyClassName = "PropertyValueProvider" + propertyProviderClassNames.size();
     propertyProviderClassNames.add(bindingPropertyClassName);
 
-    out.println("  private static class " + bindingPropertyClassName
-        + " extends BindingPropertyProvider {");
+    out.println(
+        "  private static class " + bindingPropertyClassName + " extends PropertyValueProvider {");
     out.println("  public String getName() {");
     out.println("    return \"" + bindingProperty.getName() + "\";");
     out.println("  }");
@@ -182,13 +184,13 @@
       TreeLogger logger, PrintWriter out, BindingProperty bindingProperty) {
     out.print("  public native String getValue() /*-");
     out.print(generateValue(logger, bindingProperty).trim());
-    out.println("  -*/;");
+    out.println("-*/;");
   }
 
   private void createProviderGetter(PrintWriter out, BindingProperty bindingProperty) {
     out.print("  public native String getValue() /*-");
     out.print(bindingProperty.getProvider().getBody().trim());
-    out.print("  -*/;");
+    out.print("-*/;");
   }
 
   private String generateValue(TreeLogger logger, BindingProperty bindingProperty) {
diff --git a/dev/core/test/com/google/gwt/dev/cfg/ConditionTest.java b/dev/core/test/com/google/gwt/dev/cfg/ConditionTest.java
index 410fe41..f8372a8 100644
--- a/dev/core/test/com/google/gwt/dev/cfg/ConditionTest.java
+++ b/dev/core/test/com/google/gwt/dev/cfg/ConditionTest.java
@@ -119,9 +119,9 @@
 
     // Exercise it all.
     assertEquals(
-        "!(((((requestTypeName.equals(\"com.google.gwt.Foo\")) && (BindingPropertiesProvider."
+        "!(((((requestTypeName.equals(\"com.google.gwt.Foo\")) && (RuntimePropertyRegistry."
         + "getPropertyValue(\"user.agent\").equals(\"webkit\")))) || (((requestTypeName.equals"
-        + "(\"com.google.gwt.HasFocus\")) && (BindingPropertiesProvider.getPropertyValue("
+        + "(\"com.google.gwt.HasFocus\")) && (RuntimePropertyRegistry.getPropertyValue("
         + "\"user.agent\").equals(\"ie9\"))))))", new ConditionNone(new ConditionAll(
         new ConditionWhenTypeIs("com.google.gwt.Foo"),
         new ConditionWhenPropertyIs("user.agent", "webkit")), new ConditionAll(
diff --git a/user/src/com/google/gwt/core/client/RuntimePropertyRegistry.java b/user/src/com/google/gwt/core/client/RuntimePropertyRegistry.java
new file mode 100644
index 0000000..387a7df
--- /dev/null
+++ b/user/src/com/google/gwt/core/client/RuntimePropertyRegistry.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.gwt.core.client;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * A queryable runtime registry of binding property providers and configuration property
+ * values.<br />
+ *
+ * Supports the execution of runtime rebinding by providing property value lookup to executing
+ * runtime rebind rules.
+ */
+public class RuntimePropertyRegistry {
+
+  /**
+   * A base for classes that can return or calculate a value for a property.
+   */
+  public abstract static class PropertyValueProvider {
+
+    /**
+     * Returns the name of the property for which a value is being provided.
+     */
+    public abstract String getName();
+
+    /**
+     * Returns a value for the intended property. The value might or might not be calculated on the
+     * fly based on the browser environment.
+     */
+    public abstract String getValue();
+  }
+
+  /**
+   * A cache of previously calculated values for requested property names.
+   */
+  private static Map<String, String> cachedPropertyValuesByName = new HashMap<String, String>();
+
+  /**
+   * The registry of property value provider classes, registered by name.
+   */
+  private static Map<String, PropertyValueProvider> propertyValueProvidersByName =
+      new HashMap<String, PropertyValueProvider>();
+
+  /**
+   * Returns the value for the given property name. On first access the matching property value
+   * provider is found and executed while subsequent access are served from a cache.
+   */
+  public static String getPropertyValue(String propertyName) {
+    if (cachedPropertyValuesByName.containsKey(propertyName)) {
+      return cachedPropertyValuesByName.get(propertyName);
+    }
+
+    if (propertyValueProvidersByName.containsKey(propertyName)) {
+      PropertyValueProvider propertyProvider = propertyValueProvidersByName.get(propertyName);
+      String propertyValue = propertyProvider.getValue();
+      cachedPropertyValuesByName.put(propertyName, propertyValue);
+      return propertyValue;
+    }
+
+    throw new RuntimeException("Can't get a value for property '" + propertyName
+        + "' since it does not have a registered value generator.");
+  }
+
+  /**
+   * Registers the given property value provider. Registered providers are indexed by property name
+   * for fast retrieval.
+   */
+  public static void registerPropertyValueProvider(PropertyValueProvider propertyValueProvider) {
+    propertyValueProvidersByName.put(propertyValueProvider.getName(), propertyValueProvider);
+  }
+}
diff --git a/user/src/com/google/gwt/core/client/RuntimeRebindRule.java b/user/src/com/google/gwt/core/client/RuntimeRebindRule.java
new file mode 100644
index 0000000..50a79e4
--- /dev/null
+++ b/user/src/com/google/gwt/core/client/RuntimeRebindRule.java
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.gwt.core.client;
+
+/**
+ * A base for rule classes that can judge conditions and create object instances as part of the
+ * runtime rebind rule framework.<br />
+ *
+ * Instances are registered with the RuntimeRebinder as part of module bootstrapping and are queried
+ * and creation invoked to service GWT.create() invocations.<br />
+ *
+ * Subclasses are dynamically generated during compilation to match replacement, generator output
+ * and fallback rebind rules.
+ */
+public abstract class RuntimeRebindRule {
+
+  /**
+   * Returns a newly created instance of the requested type or some replacement.
+   */
+  public abstract Object createInstance();
+
+  /**
+   * Returns whether the requested type name along with the current browser environment satisfies
+   * the condition embedded in this rule.
+   */
+  public abstract boolean matches(String requestTypeName);
+}
diff --git a/user/test/com/google/gwt/core/CoreSuite.java b/user/test/com/google/gwt/core/CoreSuite.java
index 3318edf..4cb67ba 100644
--- a/user/test/com/google/gwt/core/CoreSuite.java
+++ b/user/test/com/google/gwt/core/CoreSuite.java
@@ -23,6 +23,7 @@
 import com.google.gwt.core.client.JsArrayMixedTest;
 import com.google.gwt.core.client.JsArrayTest;
 import com.google.gwt.core.client.JsIdentityTest;
+import com.google.gwt.core.client.RuntimePropertyRegistryTest;
 import com.google.gwt.core.client.SchedulerTest;
 import com.google.gwt.core.client.ScriptInjectorTest;
 import com.google.gwt.core.client.impl.AsyncFragmentLoaderTest;
@@ -54,6 +55,7 @@
     suite.addTestSuite(JsArrayTest.class);
     suite.addTestSuite(JsArrayMixedTest.class);
     suite.addTestSuite(RunAsyncCodeTest.class);
+    suite.addTestSuite(RuntimePropertyRegistryTest.class);
     suite.addTestSuite(SchedulerImplTest.class);
     suite.addTestSuite(SchedulerTest.class);
     suite.addTestSuite(ScriptInjectorTest.class);
diff --git a/user/test/com/google/gwt/core/client/RuntimePropertyRegistryTest.java b/user/test/com/google/gwt/core/client/RuntimePropertyRegistryTest.java
new file mode 100644
index 0000000..7e011e8
--- /dev/null
+++ b/user/test/com/google/gwt/core/client/RuntimePropertyRegistryTest.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.gwt.core.client;
+
+import com.google.gwt.core.client.RuntimePropertyRegistry.PropertyValueProvider;
+
+import junit.framework.TestCase;
+
+/**
+ * Tests for the RuntimePropertyRegistry.
+ */
+public class RuntimePropertyRegistryTest extends TestCase {
+
+  private static class SimplePropertyValueProvider extends PropertyValueProvider {
+
+    private int accessCount;
+    private String name;
+    private String value;
+
+    public SimplePropertyValueProvider(String name, String value) {
+      this.name = name;
+      this.value = value;
+    }
+
+    @Override
+    public String getName() {
+      return name;
+    }
+
+    @Override
+    public String getValue() {
+      accessCount++;
+      return value;
+    }
+  }
+
+  public void testRegisterAndGet() {
+    // Sets up.
+    SimplePropertyValueProvider propertyValueProvider =
+        new SimplePropertyValueProvider("user.agent", "webkit");
+    RuntimePropertyRegistry.registerPropertyValueProvider(propertyValueProvider);
+
+    // Verifies lookup and caching.
+    assertEquals("webkit", RuntimePropertyRegistry.getPropertyValue("user.agent"));
+    assertEquals("webkit", RuntimePropertyRegistry.getPropertyValue("user.agent"));
+    assertEquals("webkit", RuntimePropertyRegistry.getPropertyValue("user.agent"));
+    assertEquals(1, propertyValueProvider.accessCount);
+  }
+}