diff --git a/jme3-core/src/main/java/com/jme3/profile/AppProfiler.java b/jme3-core/src/main/java/com/jme3/profile/AppProfiler.java
new file mode 100644
index 000000000..85ab1e74c
--- /dev/null
+++ b/jme3-core/src/main/java/com/jme3/profile/AppProfiler.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2014 jMonkeyEngine
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
+ *   may be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+ 
+package com.jme3.profile;
+
+import com.jme3.renderer.ViewPort;
+import com.jme3.renderer.queue.RenderQueue.Bucket;
+
+
+/**
+ *  Can be hooked into the application (and render manager)
+ *  to receive callbacks about specific frame steps.  It is up
+ *  to the specific implememtation to decide what to do with
+ *  the information.
+ *
+ *  @author    Paul Speed
+ */
+public interface AppProfiler {
+
+    /**
+     *  Called at the beginning of the specified AppStep.
+     */
+    public void appStep(AppStep step);
+    
+    /**
+     *  Called at the beginning of the specified VpStep during
+     *  the rendering of the specified ViewPort.  For bucket-specific
+     *  steps the Bucket parameter will be non-null.
+     */
+    public void vpStep(VpStep step, ViewPort vp, Bucket bucket);
+    
+}
+
+
diff --git a/jme3-core/src/main/java/com/jme3/profile/AppStep.java b/jme3-core/src/main/java/com/jme3/profile/AppStep.java
new file mode 100644
index 000000000..d71a47b00
--- /dev/null
+++ b/jme3-core/src/main/java/com/jme3/profile/AppStep.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2014 jMonkeyEngine
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
+ *   may be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+ 
+package com.jme3.profile;
+
+
+/**
+ *  Indicates an application-level step within the profiled
+ *  frame.
+ *
+ *  @author    Paul Speed
+ */
+public enum AppStep {
+    BeginFrame,
+    QueuedTasks,
+    ProcessInput,
+    ProcessAudio,
+    StateManagerUpdate,
+    SpatialUpdate,
+    StateManagerRender,
+    RenderFrame,
+    RenderPreviewViewPorts,
+    RenderMainViewPorts,
+    RenderPostViewPorts,
+    EndFrame
+}    
+
+
diff --git a/jme3-core/src/main/java/com/jme3/profile/VpStep.java b/jme3-core/src/main/java/com/jme3/profile/VpStep.java
new file mode 100644
index 000000000..c295be3af
--- /dev/null
+++ b/jme3-core/src/main/java/com/jme3/profile/VpStep.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2014 jMonkeyEngine
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * * Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
+ *   may be used to endorse or promote products derived from this software
+ *   without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+ 
+package com.jme3.profile;
+
+
+/**
+ *  Indicates a ViewPort-level step within the profiled
+ *  frame.
+ *
+ *  @author    Paul Speed
+ */
+public enum VpStep {
+    BeginRender,
+    RenderScene,
+    PostQueue,
+    FlushQueue,
+    PostFrame,
+    RenderBucket,
+    EndRender
+}
+