diff --git a/chrome/content/zotero/xpcom/collectionTreeView.js b/chrome/content/zotero/xpcom/collectionTreeView.js
index 2dce05c29..c8826a7bc 100644
--- a/chrome/content/zotero/xpcom/collectionTreeView.js
+++ b/chrome/content/zotero/xpcom/collectionTreeView.js
@@ -74,76 +74,13 @@ Zotero.CollectionTreeView.prototype.setTree = function(treebox)
 	
 	this.refresh();
 	
-	// Select the last-viewed collection
-	var lastViewedFolder = Zotero.Prefs.get('lastViewedFolder');
-	var matches = lastViewedFolder.match(/^(?:(C|S|G)([0-9]+)|L)$/);
-	var select = 0;
-	if (matches) {
-		if (matches[1] == 'C') {
-			if (this._collectionRowMap[matches[2]]) {
-				select = this._collectionRowMap[matches[2]];
-			}
-			// Search recursively
-			else {
-				var path = [];
-				var failsafe = 10; // Only go up ten levels
-				var lastCol = matches[2];
-				do {
-					failsafe--;
-					var col = Zotero.Collections.get(lastCol);
-					if (!col) {
-						var msg = "Last-viewed collection not found";
-						Zotero.debug(msg);
-						path = [];
-						break;
-					}
-					var par = col.getParent();
-					if (!par) {
-						var msg = "Parent collection not found in "
-							+ "Zotero.CollectionTreeView.setTree()";
-						Zotero.debug(msg, 1);
-						Components.utils.reportError(msg);
-						path = [];
-						break;
-					}
-					lastCol = par;
-					path.push(lastCol);
-				}
-				while (!this._collectionRowMap[lastCol] && failsafe > 0)
-				if (path.length) {
-					for (var i=path.length-1; i>=0; i--) {
-						var id = path[i];
-						var row = this._collectionRowMap[id];
-						if (!row) {
-							var msg = "Collection not found in tree in "
-								+ "Zotero.CollectionTreeView.setTree()";
-							Zotero.debug(msg, 1);
-							Components.utils.reportError(msg);
-							break;
-						}
-						if (!this.isContainerOpen(row)) {
-							this.toggleOpenState(row);
-							if (this._collectionRowMap[matches[2]]) {
-								select = this._collectionRowMap[matches[2]];
-								break;
-							}
-						}
-					}
-				}
-			}
-		}
-		else if (matches[1] == 'S' && this._searchRowMap[matches[2]]) {
-			select = this._searchRowMap[matches[2]];
-		}
-		else if (matches[1] == 'G' && this._groupRowMap[matches[2]]) {
-			select = this._groupRowMap[matches[2]];
-		}
-	}
-	
 	this.selection.currentColumn = this._treebox.columns.getFirstColumn();
-	this.selection.select(select);
+	
+	var row = this.getLastViewedRow();
+	this.selection.select(row);
 }
 
+
 /*
  *  Reload the rows from the data access methods
  *  (doesn't call the tree.invalidate methods, etc.)
@@ -165,6 +102,13 @@ Zotero.CollectionTreeView.prototype.refresh = function()
 	this._dataItems = [];
 	this.rowCount = 0;
 	
+	try {
+		var unfiledLibraries = Zotero.Prefs.get('unfiledLibraries').split(',');
+	}
+	catch (e) {
+		unfiledLibraries = [];
+	}
+	
 	var self = this;
 	var library = {
 		id: null,
@@ -190,6 +134,18 @@ Zotero.CollectionTreeView.prototype.refresh = function()
 				}
 			}
 			
+			// Unfiled items
+			if (unfiledLibraries.indexOf('0') != -1) {
+				var s = new Zotero.Search;
+				// Give virtual search an id so it can be reselected automatically
+				s.id = 86345330000; // 'UNFILED' + '000' + libraryID
+				s.name = Zotero.getString('pane.collections.unfiled');
+				s.addCondition('libraryID', 'is', null);
+				s.addCondition('unfiled', 'true');
+				self._showItem(new Zotero.ItemGroup('search', s), 1, newRows+1);
+				newRows++;
+			}
+			
 			var deletedItems = Zotero.Items.getDeleted();
 			if (deletedItems || Zotero.Prefs.get("showTrashWhenEmpty")) {
 				self._showItem(new Zotero.ItemGroup('trash', false), 1, newRows+1);
@@ -236,6 +192,18 @@ Zotero.CollectionTreeView.prototype.refresh = function()
 							newRows++;
 						}
 					}
+					
+					// Unfiled items
+					if (unfiledLibraries.indexOf(groups[i].libraryID + '') != -1) {
+						var s = new Zotero.Search;
+						s.id = parseInt('8634533000' + groups[i].libraryID); // 'UNFILED' + '000' + libraryID
+						s.libraryID = groups[i].libraryID;
+						s.name = Zotero.getString('pane.collections.unfiled');
+						s.addCondition('libraryID', 'is', groups[i].libraryID);
+						s.addCondition('unfiled', 'true');
+						self._showItem(new Zotero.ItemGroup('search', s), 2);
+						newRows++;
+					}
 				}
 			}
 		};
@@ -270,8 +238,6 @@ Zotero.CollectionTreeView.prototype.refresh = function()
 				}
 			}
 		};
-		Zotero.debug('=============');
-		Zotero.debug(commonsExpand);
 		this._showItem(new Zotero.ItemGroup('header', header), null, null, commonsExpand);
 		if (commonsExpand) {
 			header.expand();
@@ -781,6 +747,78 @@ Zotero.CollectionTreeView.prototype.selectLibrary = function (libraryID) {
 	return false;
 }
 
+/**
+ * Select the last-viewed source
+ */
+Zotero.CollectionTreeView.prototype.getLastViewedRow = function () {
+	var lastViewedFolder = Zotero.Prefs.get('lastViewedFolder');
+	var matches = lastViewedFolder.match(/^(?:(C|S|G)([0-9]+)|L)$/);
+	var select = 0;
+	if (matches) {
+		if (matches[1] == 'C') {
+			if (this._collectionRowMap[matches[2]]) {
+				select = this._collectionRowMap[matches[2]];
+			}
+			// Search recursively
+			else {
+				var path = [];
+				var failsafe = 10; // Only go up ten levels
+				var lastCol = matches[2];
+				do {
+					failsafe--;
+					var col = Zotero.Collections.get(lastCol);
+					if (!col) {
+						var msg = "Last-viewed collection not found";
+						Zotero.debug(msg);
+						path = [];
+						break;
+					}
+					var par = col.getParent();
+					if (!par) {
+						var msg = "Parent collection not found in "
+							+ "Zotero.CollectionTreeView.setTree()";
+						Zotero.debug(msg, 1);
+						Components.utils.reportError(msg);
+						path = [];
+						break;
+					}
+					lastCol = par;
+					path.push(lastCol);
+				}
+				while (!this._collectionRowMap[lastCol] && failsafe > 0)
+				if (path.length) {
+					for (var i=path.length-1; i>=0; i--) {
+						var id = path[i];
+						var row = this._collectionRowMap[id];
+						if (!row) {
+							var msg = "Collection not found in tree in "
+								+ "Zotero.CollectionTreeView.setTree()";
+							Zotero.debug(msg, 1);
+							Components.utils.reportError(msg);
+							break;
+						}
+						if (!this.isContainerOpen(row)) {
+							this.toggleOpenState(row);
+							if (this._collectionRowMap[matches[2]]) {
+								select = this._collectionRowMap[matches[2]];
+								break;
+							}
+						}
+					}
+				}
+			}
+		}
+		else if (matches[1] == 'S' && this._searchRowMap[matches[2]]) {
+			select = this._searchRowMap[matches[2]];
+		}
+		else if (matches[1] == 'G' && this._groupRowMap[matches[2]]) {
+			select = this._groupRowMap[matches[2]];
+		}
+	}
+	
+	return select;
+}
+
 
 /*
  *  Delete the selection
@@ -1790,6 +1828,7 @@ Zotero.ItemGroup.prototype.getChildItems = function()
 		Zotero.debug(e, 2);
 		throw (e);
 	}
+	
 	return Zotero.Items.get(ids);
 }
 
@@ -1826,7 +1865,7 @@ Zotero.ItemGroup.prototype.getSearchObject = function() {
 		s.addCondition('deleted', 'true');
 	}
 	else if (this.isSearch()) {
-		s.id = this.ref.id;
+		var s = this.ref;
 	}
 	else {
 		throw ('Invalid search mode in Zotero.ItemGroup.getSearchObject()');
diff --git a/chrome/content/zotero/xpcom/search.js b/chrome/content/zotero/xpcom/search.js
index 177b4f987..8cf11642a 100644
--- a/chrome/content/zotero/xpcom/search.js
+++ b/chrome/content/zotero/xpcom/search.js
@@ -1015,6 +1015,11 @@ Zotero.Search.prototype._buildQuery = function(){
 					var includeChildren = this._conditions[i]['operator'] == 'true';
 					continue;
 				
+				case 'unfiled':
+					this._conditions[i]['operator']
+					var unfiled = this._conditions[i]['operator'] == 'true';
+					continue;
+				
 				// Search subfolders
 				case 'recursive':
 					var recursive = this._conditions[i]['operator']=='true';
@@ -1063,6 +1068,15 @@ Zotero.Search.prototype._buildQuery = function(){
 			+ "WHERE sourceItemID IS NOT NULL))";
 	}
 	
+	if (unfiled) {
+		sql += " AND (itemID NOT IN (SELECT itemID FROM collectionItems) "
+			// Exclude children
+			+ "AND itemID NOT IN "
+			+ "(SELECT itemID FROM itemAttachments WHERE sourceItemID IS NOT NULL "
+			+ "UNION SELECT itemID FROM itemNotes WHERE sourceItemID IS NOT NULL)"
+			+ ")";
+	}
+	
 	if (this._hasPrimaryConditions) {
 		sql += " AND ";
 		
@@ -1753,6 +1767,14 @@ Zotero.SearchConditions = new function(){
 				}
 			},
 			
+			{
+				name: 'unfiled',
+				operators: {
+					true: true,
+					false: true
+				}
+			},
+			
 			{
 				name: 'includeParentsAndChildren',
 				operators: {
@@ -2071,7 +2093,6 @@ Zotero.SearchConditions = new function(){
 				special: true
 			},
 			
-			
 			{
 				name: 'fulltextContent',
 				operators: {
diff --git a/chrome/content/zotero/zoteroPane.js b/chrome/content/zotero/zoteroPane.js
index fe713bc6b..55a171e4c 100644
--- a/chrome/content/zotero/zoteroPane.js
+++ b/chrome/content/zotero/zoteroPane.js
@@ -56,7 +56,6 @@ var ZoteroPane = new function()
 	this.itemSelected = itemSelected;
 	this.reindexItem = reindexItem;
 	this.duplicateSelectedItem = duplicateSelectedItem;
-	this.deleteSelectedCollection = deleteSelectedCollection;
 	this.editSelectedCollection = editSelectedCollection;
 	this.copySelectedItemsToClipboard = copySelectedItemsToClipboard;
 	this.clearQuicksearch = clearQuicksearch;
@@ -714,6 +713,55 @@ var ZoteroPane = new function()
 		window.openDialog('chrome://zotero/content/searchDialog.xul','','chrome,modal',io);
 	}
 	
+	this.setUnfiled = function (libraryID, show) {
+		try {
+			var ids = Zotero.Prefs.get('unfiledLibraries').split(',');
+		}
+		catch (e) {
+			var ids = [];
+		}
+		
+		if (!libraryID) {
+			libraryID = 0;
+		}
+		
+		var newids = [];
+		for each(var id in ids) {
+			id = parseInt(id);
+			if (isNaN(id)) {
+				continue;
+			}
+			// Remove current library if hiding
+			if (id == libraryID && !show) {
+				continue;
+			}
+			// Remove libraryIDs that no longer exist
+			if (id != 0 && !Zotero.Libraries.exists(id)) {
+				continue;
+			}
+			newids.push(id);
+		}
+		
+		// Add the current library if it's not already set
+		if (show && newids.indexOf(libraryID) == -1) {
+			newids.push(libraryID);
+		}
+		
+		newids.sort();
+		
+		Zotero.Prefs.set('unfiledLibraries', newids.join());
+		
+		if (show) {
+			// 'UNFILED' + '000' + libraryID
+			Zotero.Prefs.set('lastViewedFolder', 'S' + '8634533000' + libraryID);
+		}
+		
+		this.collectionsView.refresh();
+		
+		// Select new row
+		var row = this.collectionsView.getLastViewedRow();
+		this.collectionsView.selection.select(row);
+	}
 	
 	this.openLookupWindow = function () {
 		if (!Zotero.stateCheck()) {
@@ -1306,17 +1354,20 @@ var ZoteroPane = new function()
 		}
 	}
 	
-	function deleteSelectedCollection()
-	{
+	this.deleteSelectedCollection = function () {
+		// Remove virtual Unfiled search
+		var row = this.collectionsView._getItemAtRow(this.collectionsView.selection.currentIndex);
+		if (row.isSearch() && (row.ref.id + "").match(/^8634533000/)) { // 'UNFILED000'
+			this.setUnfiled(row.ref.libraryID, false);
+			return;
+		}
+		
 		if (!this.canEdit()) {
 			this.displayCannotEditLibraryMessage();
 			return;
 		}
 		
 		if (this.collectionsView.selection.count == 1) {
-			var row =
-				this.collectionsView._getItemAtRow(this.collectionsView.selection.currentIndex);
-			
 			if (row.isCollection())
 			{
 				if (confirm(Zotero.getString('pane.collections.delete')))
@@ -1797,16 +1848,17 @@ var ZoteroPane = new function()
 			newSavedSearch: 1,
 			newSubcollection: 2,
 			sep1: 3,
-			editSelectedCollection: 4,
-			removeCollection: 5,
-			sep2: 6,
-			exportCollection: 7,
-			createBibCollection: 8,
-			exportFile: 9,
-			loadReport: 10,
-			emptyTrash: 11,
-			createCommonsBucket: 12,
-			refreshCommonsBucket: 13
+			showUnfiled: 4,
+			editSelectedCollection: 5,
+			removeCollection: 6,
+			sep2: 7,
+			exportCollection: 8,
+			createBibCollection: 9,
+			exportFile: 10,
+			loadReport: 11,
+			emptyTrash: 12,
+			createCommonsBucket: 13,
+			refreshCommonsBucket: 14
 		};
 		
 		var itemGroup = this.collectionsView._getItemAtRow(this.collectionsView.selection.currentIndex);
@@ -1846,14 +1898,27 @@ var ZoteroPane = new function()
 		}
 		// Saved Search
 		else if (itemGroup.isSearch()) {
-			show = [
-				m.editSelectedCollection,
-				m.removeCollection,
-				m.sep2,
-				m.exportCollection,
-				m.createBibCollection,
-				m.loadReport
-			];
+			// Unfiled items view
+			if ((itemGroup.ref.id + "").match(/^8634533000/)) { // 'UNFILED000'
+				show = [
+					m.removeCollection
+				];
+				
+				menu.childNodes[m.removeCollection].setAttribute('label', Zotero.getString('general.remove'));
+			}
+			// Normal search view
+			else {
+				show = [
+					m.editSelectedCollection,
+					m.removeCollection,
+					m.sep2,
+					m.exportCollection,
+					m.createBibCollection,
+					m.loadReport
+				];
+				
+				menu.childNodes[m.removeCollection].setAttribute('label', Zotero.getString('pane.collections.menu.remove.savedSearch'));
+			}
 			
 			var s = [m.exportCollection, m.createBibCollection, m.loadReport];
 			if (this.itemsView.rowCount>0) {
@@ -1865,7 +1930,6 @@ var ZoteroPane = new function()
 			
 			// Adjust labels
 			menu.childNodes[m.editSelectedCollection].setAttribute('label', Zotero.getString('pane.collections.menu.edit.savedSearch'));
-			menu.childNodes[m.removeCollection].setAttribute('label', Zotero.getString('pane.collections.menu.remove.savedSearch'));
 			menu.childNodes[m.exportCollection].setAttribute('label', Zotero.getString('pane.collections.menu.export.savedSearch'));
 			menu.childNodes[m.createBibCollection].setAttribute('label', Zotero.getString('pane.collections.menu.createBib.savedSearch'));
 			menu.childNodes[m.loadReport].setAttribute('label', Zotero.getString('pane.collections.menu.generateReport.savedSearch'));
@@ -1884,12 +1948,12 @@ var ZoteroPane = new function()
 		}
 		// Group
 		else if (itemGroup.isGroup()) {
-			show = [m.newCollection, m.newSavedSearch];
+			show = [m.newCollection, m.newSavedSearch, m.sep1, m.showUnfiled];
 		}
 		// Library
 		else
 		{
-			show = [m.newCollection, m.newSavedSearch, m.sep1, m.exportFile];
+			show = [m.newCollection, m.newSavedSearch, m.sep1, m.showUnfiled, m.sep2, m.exportFile];
 		}
 		
 		// Disable some actions if user doesn't have write access
diff --git a/chrome/content/zotero/zoteroPane.xul b/chrome/content/zotero/zoteroPane.xul
index 9fb37eccf..5dd8d9f60 100644
--- a/chrome/content/zotero/zoteroPane.xul
+++ b/chrome/content/zotero/zoteroPane.xul
@@ -216,6 +216,7 @@
 					<menuitem label="&zotero.toolbar.newSavedSearch.label;" oncommand="ZoteroPane.newSearch()"/>
 					<menuitem label="&zotero.toolbar.newSubcollection.label;" oncommand="ZoteroPane.newCollection(ZoteroPane.getSelectedCollection().id)"/>
 					<menuseparator/>
+					<menuitem label="&zotero.collections.showUnfiledItems;" oncommand="ZoteroPane.setUnfiled(ZoteroPane.getSelectedLibraryID(), true)"/>
 					<menuitem oncommand="ZoteroPane.editSelectedCollection();"/>
 					<menuitem oncommand="ZoteroPane.deleteSelectedCollection();"/>
 					<menuseparator/>
diff --git a/chrome/locale/en-US/zotero/searchbox.dtd b/chrome/locale/en-US/zotero/searchbox.dtd
index 8f0843502..406f9be08 100644
--- a/chrome/locale/en-US/zotero/searchbox.dtd
+++ b/chrome/locale/en-US/zotero/searchbox.dtd
@@ -6,7 +6,7 @@
 <!ENTITY zotero.search.joinMode.suffix		"of the following:">
 
 <!ENTITY zotero.search.recursive.label		"Search subfolders">
-<!ENTITY zotero.search.noChildren			"Only show top-level items">
+<!ENTITY zotero.search.noChildren			"Show only top-level items">
 <!ENTITY zotero.search.includeParentsAndChildren	"Include parent and child items of matching items">
 
 <!ENTITY zotero.search.textModes.phrase	"Phrase">
diff --git a/chrome/locale/en-US/zotero/zotero.dtd b/chrome/locale/en-US/zotero/zotero.dtd
index 4b57c0d53..d5562076d 100644
--- a/chrome/locale/en-US/zotero/zotero.dtd
+++ b/chrome/locale/en-US/zotero/zotero.dtd
@@ -37,6 +37,8 @@
 <!ENTITY zotero.tabs.related.label						"Related">
 <!ENTITY zotero.notes.separate							"Edit in a separate window">
 
+<!ENTITY zotero.collections.showUnfiledItems			"Show Unfiled Items">
+
 <!ENTITY zotero.items.itemType							"Item Type">
 <!ENTITY zotero.items.type_column						"Type">
 <!ENTITY zotero.items.title_column						"Title">
diff --git a/chrome/locale/en-US/zotero/zotero.properties b/chrome/locale/en-US/zotero/zotero.properties
index 0fa179c25..23934d134 100644
--- a/chrome/locale/en-US/zotero/zotero.properties
+++ b/chrome/locale/en-US/zotero/zotero.properties
@@ -33,6 +33,7 @@ general.create						= Create
 general.seeForMoreInformation		= See %S for more information.
 general.enable						= Enable
 general.disable						= Disable
+general.remove						= Remove
 
 general.operationInProgress = A Zotero operation is currently in progress.
 general.operationInProgress.waitUntilFinished = Please wait until it has finished.
@@ -108,6 +109,7 @@ pane.collections.rename			= Rename collection:
 pane.collections.library		= My Library
 pane.collections.trash			= Trash
 pane.collections.untitled		= Untitled
+pane.collections.unfiled		= Unfiled Items
 
 pane.collections.menu.rename.collection			= Rename Collection...
 pane.collections.menu.edit.savedSearch			= Edit Saved Search