diff --git a/CoreDataUtil.xcodeproj/project.pbxproj b/CoreDataUtil.xcodeproj/project.pbxproj
index 7d1b6ad..b2d1172 100644
--- a/CoreDataUtil.xcodeproj/project.pbxproj
+++ b/CoreDataUtil.xcodeproj/project.pbxproj
@@ -35,6 +35,8 @@
 		838055C915A3A67200D050E7 /* ApplicationIcon-CDP.icns in Resources */ = {isa = PBXBuildFile; fileRef = 838055C715A3A67200D050E7 /* ApplicationIcon-CDP.icns */; };
 		838055CA15A3A67200D050E7 /* ApplicationIcon-MOM.icns in Resources */ = {isa = PBXBuildFile; fileRef = 838055C815A3A67200D050E7 /* ApplicationIcon-MOM.icns */; };
 		83922D381598F264004C273C /* MFLCellBuilder.m in Sources */ = {isa = PBXBuildFile; fileRef = 83922D371598F264004C273C /* MFLCellBuilder.m */; };
+		83AE7D3019FF1AB400DD152B /* SimulatorItem.m in Sources */ = {isa = PBXBuildFile; fileRef = 83AE7D2F19FF1AB400DD152B /* SimulatorItem.m */; };
+		83AE7D3219FF1CE900DD152B /* simulatorIcon.png in Resources */ = {isa = PBXBuildFile; fileRef = 83AE7D3119FF1CE900DD152B /* simulatorIcon.png */; };
 		83B158FD158F6AE2002B46C2 /* MFLCoreDataIntrospection.m in Sources */ = {isa = PBXBuildFile; fileRef = 83B158FC158F6AE2002B46C2 /* MFLCoreDataIntrospection.m */; };
 		C1CEFE561463779D00466EB3 /* Cocoa.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = C1CEFE551463779D00466EB3 /* Cocoa.framework */; };
 		C1CEFE601463779D00466EB3 /* InfoPlist.strings in Resources */ = {isa = PBXBuildFile; fileRef = C1CEFE5E1463779D00466EB3 /* InfoPlist.strings */; };
@@ -123,6 +125,9 @@
 		838055C815A3A67200D050E7 /* ApplicationIcon-MOM.icns */ = {isa = PBXFileReference; lastKnownFileType = image.icns; path = "ApplicationIcon-MOM.icns"; sourceTree = "<group>"; };
 		83922D361598F264004C273C /* MFLCellBuilder.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MFLCellBuilder.h; sourceTree = "<group>"; };
 		83922D371598F264004C273C /* MFLCellBuilder.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MFLCellBuilder.m; sourceTree = "<group>"; };
+		83AE7D2E19FF1AB400DD152B /* SimulatorItem.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SimulatorItem.h; sourceTree = "<group>"; };
+		83AE7D2F19FF1AB400DD152B /* SimulatorItem.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = SimulatorItem.m; sourceTree = "<group>"; };
+		83AE7D3119FF1CE900DD152B /* simulatorIcon.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = simulatorIcon.png; sourceTree = "<group>"; };
 		83B158FB158F6AE2002B46C2 /* MFLCoreDataIntrospection.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MFLCoreDataIntrospection.h; sourceTree = "<group>"; };
 		83B158FC158F6AE2002B46C2 /* MFLCoreDataIntrospection.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MFLCoreDataIntrospection.m; sourceTree = "<group>"; };
 		C1CEFE511463779C00466EB3 /* CoreDataPro.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = CoreDataPro.app; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -215,6 +220,7 @@
 		83656E6A1937A637003D0E74 /* windows */ = {
 			isa = PBXGroup;
 			children = (
+				83AE7D2D19FF1A9500DD152B /* simulator */,
 				1D52574316EB66F100A91244 /* FetchRequestInfoController.h */,
 				1D52574416EB66F100A91244 /* FetchRequestInfoController.m */,
 				1D52574516EB66F100A91244 /* FetchRequestInfoController.xib */,
@@ -237,6 +243,15 @@
 			name = windows;
 			sourceTree = "<group>";
 		};
+		83AE7D2D19FF1A9500DD152B /* simulator */ = {
+			isa = PBXGroup;
+			children = (
+				83AE7D2E19FF1AB400DD152B /* SimulatorItem.h */,
+				83AE7D2F19FF1AB400DD152B /* SimulatorItem.m */,
+			);
+			name = simulator;
+			sourceTree = "<group>";
+		};
 		83B566571593A531004DE9FC /* TableViewCells */ = {
 			isa = PBXGroup;
 			children = (
@@ -345,15 +360,16 @@
 			children = (
 				838055C715A3A67200D050E7 /* ApplicationIcon-CDP.icns */,
 				838055C815A3A67200D050E7 /* ApplicationIcon-MOM.icns */,
-				83052CAC159D4B3900BB2FC6 /* CoreDataPro.entitlements */,
-				832C9695159BD69E00AC8FA8 /* CoreData.ext */,
-				8359411E159217770045B287 /* refreshButton.png */,
 				834D1480156B52ED00317376 /* ApplicationIcon.icns */,
+				832C9695159BD69E00AC8FA8 /* CoreData.ext */,
 				C1CEFE5D1463779D00466EB3 /* CoreDataPro-Info.plist */,
-				C1CEFE5E1463779D00466EB3 /* InfoPlist.strings */,
-				C1CEFE611463779D00466EB3 /* main.m */,
+				83052CAC159D4B3900BB2FC6 /* CoreDataPro.entitlements */,
 				C1CEFE631463779D00466EB3 /* CoreDataUtil-Prefix.pch */,
 				C1CEFE641463779D00466EB3 /* Credits.rtf */,
+				C1CEFE5E1463779D00466EB3 /* InfoPlist.strings */,
+				C1CEFE611463779D00466EB3 /* main.m */,
+				8359411E159217770045B287 /* refreshButton.png */,
+				83AE7D3119FF1CE900DD152B /* simulatorIcon.png */,
 			);
 			name = "Supporting Files";
 			sourceTree = "<group>";
@@ -508,6 +524,7 @@
 				5B2E2AA71565A8AC00F6F6EA /* OpenFileSheetController.xib in Resources */,
 				834D1481156B52ED00317376 /* ApplicationIcon.icns in Resources */,
 				5B2AEF1C1576B67600DFD0D6 /* GetInfoSheetController.xib in Resources */,
+				83AE7D3219FF1CE900DD152B /* simulatorIcon.png in Resources */,
 				8359411F159217770045B287 /* refreshButton.png in Resources */,
 				830D04EE1598CC4D003874CA /* MFLMainWindowController.xib in Resources */,
 				832C9696159BD69E00AC8FA8 /* CoreData.ext in Resources */,
@@ -565,6 +582,7 @@
 				5B2E2AA61565A8AC00F6F6EA /* OpenFileSheetController.m in Sources */,
 				5B2AEF1B1576B67600DFD0D6 /* GetInfoSheetController.m in Sources */,
 				5BE26B63157FE8EE00DC186E /* EntityTableView.m in Sources */,
+				83AE7D3019FF1AB400DD152B /* SimulatorItem.m in Sources */,
 				5BE26B67157FF22700DC186E /* EntityDataTableView.m in Sources */,
 				83B158FD158F6AE2002B46C2 /* MFLCoreDataIntrospection.m in Sources */,
 				5B330A701590CB1E00D79D4D /* EntityDataTableViewCell.m in Sources */,
diff --git a/CoreDataUtil/OpenFileSheetController.h b/CoreDataUtil/OpenFileSheetController.h
index 65ac83b..958541f 100644
--- a/CoreDataUtil/OpenFileSheetController.h
+++ b/CoreDataUtil/OpenFileSheetController.h
@@ -18,7 +18,7 @@ typedef enum
 
 @class MFLAppDelegate;
 
-@interface OpenFileSheetController : NSWindowController <NSTabViewDelegate>
+@interface OpenFileSheetController : NSWindowController <NSTabViewDelegate, NSOutlineViewDataSource, NSOutlineViewDelegate>
 {
     TabName currentTab;
     BOOL didSubmit;
diff --git a/CoreDataUtil/OpenFileSheetController.m b/CoreDataUtil/OpenFileSheetController.m
index e15c59d..05e745e 100644
--- a/CoreDataUtil/OpenFileSheetController.m
+++ b/CoreDataUtil/OpenFileSheetController.m
@@ -8,6 +8,7 @@
 
 #import "OpenFileSheetController.h"
 #import "MFLConstants.h"
+#import "SimulatorItem.h"
 
 @interface OpenFileSheetController ()
 
@@ -17,6 +18,7 @@ @interface OpenFileSheetController ()
 @property (strong) NSDictionary *savedFields;
 @property (strong) NSArray *processList;
 @property (strong) NSMutableArray *simulatorUrlList;
+@property (weak) IBOutlet NSOutlineView *simulatorSourceList;
 
 - (void)initializeTab;
 - (void)showOrHideOpenButton;
@@ -93,7 +95,7 @@ - (void) setModelFileInUI:(NSString*) momFilePath {
 - (void)windowDidLoad
 {
     [super windowDidLoad];
-    NSLog(@"windowDidLoad");
+    NSLog(@"%s", __FUNCTION__);
     
     if (self.initialValues != nil)
     {
@@ -761,4 +763,39 @@ - (void)tabView:(NSTabView *)tabView didSelectTabViewItem:(NSTabViewItem *)tabVi
     [self initializeTab];
 }
 
+#pragma mark - NSOutlineView
+
+- (NSInteger)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item {
+    NSInteger rowCount =  (item == nil) ? 1 : [item numberOfChildren];
+    return rowCount;
+}
+
+- (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item {
+    BOOL result = (item == nil) ? YES : ([item numberOfChildren] != -1);
+    return result;
+}
+
+- (id)outlineView:(NSOutlineView *)outlineView child:(NSInteger)index ofItem:(id)item {
+    id result = (item == nil) ? [SimulatorItem rootItem] : [(SimulatorItem *)item childAtIndex:index];
+    //NSLog(@"%s: %@", __FUNCTION__, result);
+    return result;
+}
+
+- (NSView *)outlineView:(NSOutlineView *)outlineView viewForTableColumn:(NSTableColumn *)tableColumn item:(id)item {
+    NSTableCellView* result = [outlineView makeViewWithIdentifier:@"simulatorRow" owner:self];
+    SimulatorItem* simItem = (SimulatorItem*) item;
+    result.textField.stringValue = simItem.label;
+    if ([item itemType] == MFLRootItem) {
+        //[outlineView expandItem:item];
+    }
+    return result;
+}
+
+// Delegate methods
+
+- (BOOL)outlineView:(NSOutlineView *)outlineView shouldEditTableColumn:(NSTableColumn *)tableColumn item:(id)item {
+    return NO;
+}
+
+
 @end
diff --git a/CoreDataUtil/OpenFileSheetController.xib b/CoreDataUtil/OpenFileSheetController.xib
index a7e012e..4d341ac 100644
--- a/CoreDataUtil/OpenFileSheetController.xib
+++ b/CoreDataUtil/OpenFileSheetController.xib
@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="6245" systemVersion="13F34" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none">
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="6250" systemVersion="14A389" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none">
     <dependencies>
-        <deployment defaultVersion="1070" identifier="macosx"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="6245"/>
+        <deployment identifier="macosx"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="6250"/>
     </dependencies>
     <objects>
         <customObject id="-2" userLabel="File's Owner" customClass="OpenFileSheetController">
@@ -24,6 +24,7 @@
                 <outlet property="processTabPersistenceFileButton" destination="640" id="726"/>
                 <outlet property="processTabPersistenceFormat" destination="1283" id="1300"/>
                 <outlet property="processTabPersistenceTextField" destination="633" id="718"/>
+                <outlet property="simulatorSourceList" destination="SOS-aC-JWX" id="8T9-Jj-NfQ"/>
                 <outlet property="simulatorTabModelTextField" destination="691" id="721"/>
                 <outlet property="simulatorTabPersistenceFileButton" destination="672" id="723"/>
                 <outlet property="simulatorTabPersistenceFormat" destination="1291" id="1301"/>
@@ -265,7 +266,7 @@ Gw
                                     <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                                     <subviews>
                                         <textField verticalHuggingPriority="750" id="667">
-                                            <rect key="frame" x="17" y="106" width="467" height="22"/>
+                                            <rect key="frame" x="155" y="104" width="307" height="22"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <string key="toolTip">Select the "File" button and navigate to where your application stores it's persistence file. This is usually in YourApp.app/../Documents</string>
                                             <textFieldCell key="cell" lineBreakMode="truncatingHead" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" placeholderString="Step 3: Persistence file to load" drawsBackground="YES" id="668">
@@ -275,7 +276,7 @@ Gw
                                             </textFieldCell>
                                         </textField>
                                         <button verticalHuggingPriority="750" id="672">
-                                            <rect key="frame" x="11" y="70" width="82" height="32"/>
+                                            <rect key="frame" x="152" y="63" width="82" height="32"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <buttonCell key="cell" type="push" title="File" bezelStyle="rounded" alignment="center" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="674">
                                                 <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
@@ -286,7 +287,7 @@ Gw
                                             </connections>
                                         </button>
                                         <textField toolTip="Select the &quot;Simulator App&quot; button and select your application from the list." verticalHuggingPriority="750" id="691">
-                                            <rect key="frame" x="17" y="177" width="467" height="22"/>
+                                            <rect key="frame" x="155" y="182" width="315" height="22"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <textFieldCell key="cell" lineBreakMode="truncatingHead" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" placeholderString="Step 2: Simulator app to load" drawsBackground="YES" id="692">
                                                 <font key="font" metaFont="system"/>
@@ -295,7 +296,7 @@ Gw
                                             </textFieldCell>
                                         </textField>
                                         <button verticalHuggingPriority="750" id="697">
-                                            <rect key="frame" x="11" y="141" width="130" height="32"/>
+                                            <rect key="frame" x="149" y="139" width="130" height="32"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <buttonCell key="cell" type="push" title="Simulator App" bezelStyle="rounded" alignment="center" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="698">
                                                 <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
@@ -306,7 +307,7 @@ Gw
                                             </connections>
                                         </button>
                                         <popUpButton verticalHuggingPriority="750" id="1291">
-                                            <rect key="frame" x="144" y="33" width="133" height="26"/>
+                                            <rect key="frame" x="286" y="31" width="133" height="26"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <popUpButtonCell key="cell" type="push" title="SQL" bezelStyle="rounded" alignment="left" lineBreakMode="truncatingTail" state="on" borderStyle="borderAndBezel" imageScaling="proportionallyDown" inset="2" selectedItem="1298" id="1294">
                                                 <behavior key="behavior" lightByBackground="YES" lightByGray="YES"/>
@@ -320,7 +321,7 @@ Gw
                                             </popUpButtonCell>
                                         </popUpButton>
                                         <textField verticalHuggingPriority="750" id="1292">
-                                            <rect key="frame" x="14" y="39" width="124" height="17"/>
+                                            <rect key="frame" x="156" y="37" width="124" height="17"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" title="Persistence Format" id="1293">
                                                 <font key="font" metaFont="system"/>
@@ -337,8 +338,96 @@ Gw
                                                 <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
                                             </textFieldCell>
                                         </textField>
+                                        <scrollView autohidesScrollers="YES" horizontalLineScroll="19" horizontalPageScroll="10" verticalLineScroll="19" verticalPageScroll="10" usesPredominantAxisScrolling="NO" id="2zO-XG-Cgp">
+                                            <rect key="frame" x="-3" y="-3" width="150" height="273"/>
+                                            <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                                            <clipView key="contentView" drawsBackground="NO" id="nND-ar-MfW">
+                                                <rect key="frame" x="1" y="1" width="148" height="398"/>
+                                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                <subviews>
+                                                    <outlineView appearanceType="vibrantLight" verticalHuggingPriority="750" allowsExpansionToolTips="YES" columnAutoresizingStyle="lastColumnOnly" selectionHighlightStyle="sourceList" multipleSelection="NO" autosaveColumns="NO" rowSizeStyle="automatic" viewBased="YES" indentationPerLevel="16" outlineTableColumn="M4U-v5-9Q1" id="SOS-aC-JWX">
+                                                        <autoresizingMask key="autoresizingMask"/>
+                                                        <size key="intercellSpacing" width="3" height="2"/>
+                                                        <color key="backgroundColor" name="_sourceListBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                                        <color key="gridColor" name="gridColor" catalog="System" colorSpace="catalog"/>
+                                                        <tableColumns>
+                                                            <tableColumn width="145" minWidth="16" maxWidth="1000" id="M4U-v5-9Q1">
+                                                                <tableHeaderCell key="headerCell" lineBreakMode="truncatingTail" borderStyle="border" alignment="left">
+                                                                    <font key="font" metaFont="smallSystem"/>
+                                                                    <color key="textColor" name="headerTextColor" catalog="System" colorSpace="catalog"/>
+                                                                    <color key="backgroundColor" name="headerColor" catalog="System" colorSpace="catalog"/>
+                                                                </tableHeaderCell>
+                                                                <textFieldCell key="dataCell" lineBreakMode="truncatingTail" selectable="YES" editable="YES" alignment="left" title="Text Cell" id="KDj-nr-oa4">
+                                                                    <font key="font" metaFont="system"/>
+                                                                    <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                                                    <color key="backgroundColor" name="controlBackgroundColor" catalog="System" colorSpace="catalog"/>
+                                                                </textFieldCell>
+                                                                <tableColumnResizingMask key="resizingMask" resizeWithTable="YES" userResizable="YES"/>
+                                                                <prototypeCellViews>
+                                                                    <tableCellView identifier="HeaderCell" id="yBa-Xw-Yg6">
+                                                                        <rect key="frame" x="0.0" y="0.0" width="145" height="17"/>
+                                                                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                                        <subviews>
+                                                                            <textField verticalHuggingPriority="750" id="yRM-sZ-G7B">
+                                                                                <rect key="frame" x="0.0" y="1" width="145" height="14"/>
+                                                                                <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
+                                                                                <textFieldCell key="cell" lineBreakMode="truncatingTail" sendsActionOnEndEditing="YES" title="Simulator" id="hOk-6S-qOY">
+                                                                                    <font key="font" metaFont="smallSystemBold"/>
+                                                                                    <color key="textColor" name="headerColor" catalog="System" colorSpace="catalog"/>
+                                                                                    <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                                                                                </textFieldCell>
+                                                                            </textField>
+                                                                        </subviews>
+                                                                        <connections>
+                                                                            <outlet property="textField" destination="yRM-sZ-G7B" id="d5X-RJ-T4Q"/>
+                                                                        </connections>
+                                                                    </tableCellView>
+                                                                    <tableCellView identifier="simulatorRow" id="GHB-Uu-m0Y">
+                                                                        <rect key="frame" x="0.0" y="0.0" width="145" height="17"/>
+                                                                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                                                        <subviews>
+                                                                            <imageView id="WtR-BB-Dca">
+                                                                                <rect key="frame" x="3" y="0.0" width="17" height="17"/>
+                                                                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
+                                                                                <imageCell key="cell" refusesFirstResponder="YES" alignment="left" imageScaling="axesIndependently" image="simulatorIcon" id="1Uo-NW-zaL"/>
+                                                                            </imageView>
+                                                                            <textField identifier="simulatorRow" verticalHuggingPriority="750" id="nJN-tE-qFM">
+                                                                                <rect key="frame" x="25" y="0.0" width="120" height="17"/>
+                                                                                <autoresizingMask key="autoresizingMask" widthSizable="YES" flexibleMinY="YES"/>
+                                                                                <textFieldCell key="cell" lineBreakMode="truncatingTail" sendsActionOnEndEditing="YES" title="Simulator Name" id="6uF-JE-7C2">
+                                                                                    <font key="font" metaFont="system"/>
+                                                                                    <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
+                                                                                    <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
+                                                                                </textFieldCell>
+                                                                            </textField>
+                                                                        </subviews>
+                                                                        <connections>
+                                                                            <outlet property="imageView" destination="WtR-BB-Dca" id="fVC-2D-ft3"/>
+                                                                            <outlet property="textField" destination="nJN-tE-qFM" id="NR2-n9-5GN"/>
+                                                                        </connections>
+                                                                    </tableCellView>
+                                                                </prototypeCellViews>
+                                                            </tableColumn>
+                                                        </tableColumns>
+                                                        <connections>
+                                                            <outlet property="dataSource" destination="-2" id="7gu-PL-yhI"/>
+                                                            <outlet property="delegate" destination="-2" id="5aT-xt-7Yx"/>
+                                                        </connections>
+                                                    </outlineView>
+                                                </subviews>
+                                                <nil key="backgroundColor"/>
+                                            </clipView>
+                                            <scroller key="horizontalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="YES" id="YN2-XP-jCC">
+                                                <rect key="frame" x="1" y="119" width="238" height="15"/>
+                                                <autoresizingMask key="autoresizingMask"/>
+                                            </scroller>
+                                            <scroller key="verticalScroller" hidden="YES" verticalHuggingPriority="750" horizontal="NO" id="M7T-ee-Nw7">
+                                                <rect key="frame" x="224" y="17" width="15" height="102"/>
+                                                <autoresizingMask key="autoresizingMask"/>
+                                            </scroller>
+                                        </scrollView>
                                         <button horizontalHuggingPriority="750" verticalHuggingPriority="750" id="VgW-Wo-6Mp">
-                                            <rect key="frame" x="14" y="252" width="25" height="25"/>
+                                            <rect key="frame" x="466" y="272" width="25" height="25"/>
                                             <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                                             <buttonCell key="cell" type="help" bezelStyle="helpButton" alignment="center" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="d9b-IC-Uef">
                                                 <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
@@ -414,4 +503,7 @@ Gw
             </view>
         </window>
     </objects>
+    <resources>
+        <image name="simulatorIcon" width="340" height="288"/>
+    </resources>
 </document>
diff --git a/CoreDataUtil/SimulatorItem.h b/CoreDataUtil/SimulatorItem.h
new file mode 100644
index 0000000..420cc32
--- /dev/null
+++ b/CoreDataUtil/SimulatorItem.h
@@ -0,0 +1,39 @@
+//
+//  SimulatorItem.h
+//  CoreDataUtil
+//
+//  Created by Chris Wilson on 10/27/14.
+//  Copyright (c) 2014 mFluent LLC. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+typedef NS_ENUM(NSInteger, MFLItemType) {
+    MFLRootItem,
+    MFLSimulatorItem,
+    MFLAppItem
+};
+
+@interface SimulatorItem : NSObject
+
+
+@property (nonatomic) MFLItemType itemType;
+@property (nonatomic) NSString* relativePath;
+@property (nonatomic) NSString* path;
+@property (nonatomic) SimulatorItem* parent;
+@property (nonatomic) NSMutableArray* children;
+@property (nonatomic) NSDictionary* simInfo;
+
+- (NSInteger) numberOfChildren;
+
++ (SimulatorItem*) rootItem;
+
+- (SimulatorItem*) childAtIndex:(NSInteger)n;	// Invalid to call on leaf nodes
+
+- (NSString *)fullPath;
+
+- (NSString *)relativePath;
+
+- (NSString*) label;
+
+@end
diff --git a/CoreDataUtil/SimulatorItem.m b/CoreDataUtil/SimulatorItem.m
new file mode 100644
index 0000000..3f976ad
--- /dev/null
+++ b/CoreDataUtil/SimulatorItem.m
@@ -0,0 +1,122 @@
+//
+//  SimulatorItem.m
+//  CoreDataUtil
+//
+//  Created by Chris Wilson on 10/27/14.
+//  Copyright (c) 2014 mFluent LLC. All rights reserved.
+//
+
+#import "SimulatorItem.h"
+
+#define IsALeafNode ((id)-1)
+
+@implementation SimulatorItem
+
+static SimulatorItem *rootItem = nil;
+
+- (id)initWithPath:(NSString *)path parent:(SimulatorItem*) obj {
+    if (self = [super init]) {
+        if (obj == nil) {
+            self.relativePath = path;
+        } else {
+            self.relativePath = [[path lastPathComponent] copy];
+        }
+        self.parent = obj;
+        self.path = path;
+    }
+    return self;
+}
+
++ (SimulatorItem*) rootItem {
+    NSURL* simulatorUrl = [self simulatorRootDirectory];
+    
+    if (rootItem == nil) {
+        rootItem = [[SimulatorItem alloc] initWithPath:[simulatorUrl path]  parent:nil];
+        [rootItem setItemType:MFLRootItem];
+    }
+    return rootItem;
+}
+
+// Creates and returns the array of children
+// Loads children incrementally
+//
+- (NSArray*)children {
+    if (_children == nil) {
+        NSFileManager *fileManager = [NSFileManager defaultManager];
+        NSString *fullPath = [self fullPath];
+        BOOL isDir, valid = [fileManager fileExistsAtPath:fullPath isDirectory:&isDir];
+        if (valid && isDir) {
+            NSArray *array = [fileManager contentsOfDirectoryAtPath:fullPath error:NULL];
+            if (!array) {   // This is unexpected
+                self.children = [[NSMutableArray alloc] init];
+            } else {
+                NSInteger cnt, numChildren = [array count];
+                self.children = [[NSMutableArray alloc] init];
+                for (cnt = 0; cnt < numChildren; cnt++) {
+                    NSString* simDir = [array objectAtIndex:cnt];
+                    NSDictionary* simInfo = [NSDictionary dictionaryWithContentsOfFile:[NSString stringWithFormat:@"%@/%@/device.plist", fullPath, simDir]];
+                    if (simInfo != nil) {
+                        SimulatorItem *item = [[SimulatorItem alloc] initWithPath:simDir parent:self];
+                        [item setSimInfo:simInfo];
+                        [item setItemType:MFLSimulatorItem];
+                        [_children addObject:item];
+                    } else if (self.itemType == MFLSimulatorItem ) {
+                        // TODO: find applications
+                        // .com.apple.mobile_container_manager.metadata.plist
+                        
+                        // /Users/chris/Library/Developer/CoreSimulator/Devices/615CF8CD-1286-4C83-9C62-0D5D690BF591/data/Containers/
+                        // Bundle/Application/EA3C673A-627A-487A-A747-8D427FFA9FF6/Beepngo.app/Beepngo.momd/Beepngo.mom
+                        // Data/Application/0F07363C-027C-40BD-AB46-769EC6F967E7/Documents/Beepngo.sqlite
+
+                        // Data/Application/0F07363C-027C-40BD-AB46-769EC6F967E7/.com.apple.mobile_container_manager.metadata.plist
+                        // MCMMetadataIdentifier
+                        // UDID
+//                        NSDictionary* simInfo = [NSDictionary dictionaryWithContentsOfFile:[NSString stringWithFormat:@"%@/%@/.com.apple.mobile_container_manager.metadata.plist", fullPath, simDir]];
+//                        if (simInfo != nil) {
+//                            SimulatorItem *item = [[SimulatorItem alloc] initWithPath:simDir parent:self];
+//                            [_children addObject:item];
+//                        }
+                    }
+                }
+            }
+        } else {
+            self.children = nil; //IsALeafNode;
+        }
+    }
+    return _children;
+}
+
+- (NSString *)fullPath {
+    return self.parent ? [[self.parent fullPath] stringByAppendingPathComponent:self.relativePath] : self.relativePath;
+}
+
+- (SimulatorItem*) childAtIndex:(NSInteger)n {
+    return [[self children] objectAtIndex:n];
+}
+
+- (NSInteger) numberOfChildren {
+    id tmp = [self children];
+    return (tmp == nil) ? (-1) : [tmp count];
+}
+
+- (NSString*) label {
+    if (self.simInfo != nil) {
+        return [self.simInfo valueForKey:@"name"];
+    }
+    
+    return [self.path lastPathComponent];
+}
+
+#pragma mark - Internal Helpers
+
++ (NSURL *)simulatorRootDirectory {
+    // Root: /Users/chris/Library/Developer/CoreSimulator/Devices
+
+    NSFileManager *fileManager = [NSFileManager defaultManager];
+    NSURL* libraryURL = [[fileManager URLsForDirectory:NSLibraryDirectory inDomains:NSUserDomainMask] lastObject];
+    NSURL* simulatorUrl = [libraryURL URLByAppendingPathComponent:[NSString stringWithFormat:@"/Developer/CoreSimulator/Devices"]];
+    return simulatorUrl;
+}
+
+
+@end
diff --git a/CoreDataUtil/simulatorIcon.png b/CoreDataUtil/simulatorIcon.png
new file mode 100644
index 0000000..23f22cf
Binary files /dev/null and b/CoreDataUtil/simulatorIcon.png differ