diff --git a/resources/CMakeLists.txt b/resources/CMakeLists.txt
index d8d613ca9b2..3dee5754d4b 100644
--- a/resources/CMakeLists.txt
+++ b/resources/CMakeLists.txt
@@ -23,5 +23,17 @@ if (MSVC_IDE)
         visualstudio/stllist.natvis
         visualstudio/stlvector.natvis
         visualstudio/unicodestring.natvis
+        visualstudio/wwlib/hash.natvis
+        visualstudio/wwlib/hashtemplate.natvis
+        visualstudio/wwlib/listnode.natvis
+        visualstudio/wwlib/mpsc_intrusive_queue.natvis
+        visualstudio/wwlib/multilist.natvis
+        visualstudio/wwlib/sharebuf.natvis
+        visualstudio/wwlib/simplevec.natvis
+        visualstudio/wwlib/slist.natvis
+        visualstudio/wwlib/uarray.natvis
+        visualstudio/wwlib/vector.natvis
+        visualstudio/wwlib/widestring.natvis
+        visualstudio/wwlib/wwstring.natvis
     )
 endif()
diff --git a/resources/visualstudio/asciistring.natvis b/resources/visualstudio/asciistring.natvis
index 8f88151691e..4f9a8f1c48d 100644
--- a/resources/visualstudio/asciistring.natvis
+++ b/resources/visualstudio/asciistring.natvis
@@ -1,11 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?> 
 <AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- m_data points to a ref counted AsciiStringData header, and the characters follow
+         directly behind it. No length is stored, so it is counted like getLength does. -->
     <Type Name="AsciiString">
-        <DisplayString Condition="m_data != nullptr">{(const char *)(&amp; m_data[1]),s8}</DisplayString>
-        <DisplayString Condition="m_data == nullptr">""</DisplayString>
+        <DisplayString Condition="m_data == 0">""</DisplayString>
+        <DisplayString>{(const char *)(m_data + 1),s8}</DisplayString>
+        <StringView Condition="m_data != 0">(const char *)(m_data + 1),s8</StringView>
         <Expand>
-            <Item Name="[data]" Optional="true" Condition="m_data != nullptr">m_data</Item>
-            <Item Name="[str]" Optional="true" Condition="m_data != nullptr">(const char *)(&amp; m_data[1])</Item>
+            <Item Name="[length]" ExcludeView="simple">m_data == 0 ? 0 : (int)strnlen((const char *)(m_data + 1), m_data-&gt;m_numCharsAllocated)</Item>
+            <Item Name="[capacity]" Condition="m_data != 0" ExcludeView="simple">(int)m_data-&gt;m_numCharsAllocated</Item>
+            <Item Name="[refs]" Condition="m_data != 0" ExcludeView="simple">(int)m_data-&gt;m_refCount</Item>
+            <Item Name="[str]" Condition="m_data != 0">(const char *)(m_data + 1),s8</Item>
         </Expand>
     </Type>
-</AutoVisualizer>
\ No newline at end of file
+</AutoVisualizer>
diff --git a/resources/visualstudio/unicodestring.natvis b/resources/visualstudio/unicodestring.natvis
index 22aaf299cdc..a71be3c4ed9 100644
--- a/resources/visualstudio/unicodestring.natvis
+++ b/resources/visualstudio/unicodestring.natvis
@@ -1,11 +1,16 @@
 <?xml version="1.0" encoding="utf-8"?> 
 <AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- m_data points to a ref counted UnicodeStringData header, and the characters follow
+         directly behind it. No length is stored, so it is counted like getLength does. -->
     <Type Name="UnicodeString">
-        <DisplayString Condition="m_data != nullptr">{(const wchar_t *)(&amp; m_data[1]),su}</DisplayString>
-        <DisplayString Condition="m_data == nullptr">""</DisplayString>
+        <DisplayString Condition="m_data == 0">""</DisplayString>
+        <DisplayString>{(const wchar_t *)(m_data + 1),su}</DisplayString>
+        <StringView Condition="m_data != 0">(const wchar_t *)(m_data + 1),su</StringView>
         <Expand>
-            <Item Name="[data]" Optional="true" Condition="m_data != nullptr">m_data</Item>
-            <Item Name="[str]" Optional="true" Condition="m_data != nullptr">(const wchar_t *)(&amp; m_data[1])</Item>
+            <Item Name="[length]" ExcludeView="simple">m_data == 0 ? 0 : (int)wcsnlen((const wchar_t *)(m_data + 1), m_data-&gt;m_numCharsAllocated)</Item>
+            <Item Name="[capacity]" Condition="m_data != 0" ExcludeView="simple">(int)m_data-&gt;m_numCharsAllocated</Item>
+            <Item Name="[refs]" Condition="m_data != 0" ExcludeView="simple">(int)m_data-&gt;m_refCount</Item>
+            <Item Name="[str]" Condition="m_data != 0">(const wchar_t *)(m_data + 1),su</Item>
         </Expand>
     </Type>
-</AutoVisualizer>
\ No newline at end of file
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/hash.natvis b/resources/visualstudio/wwlib/hash.natvis
new file mode 100644
index 00000000000..d31c64f960a
--- /dev/null
+++ b/resources/visualstudio/wwlib/hash.natvis
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- Buckets hold the head of a chain that is threaded through HashableClass::NextHash,
+         so the entries are gathered with a bucket loop wrapped around a chain loop. -->
+    <Type Name="HashTableClass">
+        <DisplayString>{{ buckets={HashTableSize} }}</DisplayString>
+        <Expand>
+            <Item Name="[buckets]" ExcludeView="simple">HashTableSize</Item>
+            <CustomListItems>
+                <Variable Name="bucket" InitialValue="0"/>
+                <Variable Name="entry" InitialValue="(HashableClass *)0"/>
+                <Loop>
+                    <Break Condition="bucket &gt;= HashTableSize"/>
+                    <Exec>entry = HashTable[bucket]</Exec>
+                    <Loop>
+                        <Break Condition="entry == 0"/>
+                        <Item>entry</Item>
+                        <Exec>entry = entry-&gt;NextHash</Exec>
+                    </Loop>
+                    <Exec>bucket = bucket + 1</Exec>
+                </Loop>
+            </CustomListItems>
+        </Expand>
+    </Type>
+
+    <Type Name="HashTableIteratorClass">
+        <DisplayString Condition="CurrentEntry == 0">{{ done }}</DisplayString>
+        <DisplayString>{*CurrentEntry}</DisplayString>
+        <Expand>
+            <Item Name="[current]">CurrentEntry</Item>
+            <Item Name="[next]" ExcludeView="simple">NextEntry</Item>
+            <Item Name="[bucket]" ExcludeView="simple">Index</Item>
+            <Item Name="[table]" ExcludeView="simple">Table</Item>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/hashtemplate.natvis b/resources/visualstudio/wwlib/hashtemplate.natvis
new file mode 100644
index 00000000000..dbf81cc1d50
--- /dev/null
+++ b/resources/visualstudio/wwlib/hashtemplate.natvis
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- Hash holds one handle per bucket into Table, and the chain is threaded through
+         Table[handle].Next. Both use the class's NIL sentinel, which is -1. -->
+    <Type Name="HashTemplateClass&lt;*,*&gt;">
+        <DisplayString>{{ buckets={(int)Size} }}</DisplayString>
+        <Expand>
+            <Item Name="[buckets]" ExcludeView="simple">(int)Size</Item>
+            <CustomListItems>
+                <Variable Name="bucket" InitialValue="0"/>
+                <Variable Name="handle" InitialValue="-1"/>
+                <Loop>
+                    <Break Condition="bucket &gt;= (int)Size"/>
+                    <Exec>handle = Hash[bucket]</Exec>
+                    <Loop>
+                        <Break Condition="handle == -1"/>
+                        <Item Name="{Table[handle].Key}">Table[handle].Value</Item>
+                        <Exec>handle = Table[handle].Next</Exec>
+                    </Loop>
+                    <Exec>bucket = bucket + 1</Exec>
+                </Loop>
+            </CustomListItems>
+        </Expand>
+    </Type>
+
+    <Type Name="HashTemplateIterator&lt;*,*&gt;">
+        <DisplayString Condition="Handle == -1">{{ done }}</DisplayString>
+        <DisplayString>{HashTable.Table[Handle].Value}</DisplayString>
+        <Expand>
+            <Item Name="[key]" Condition="Handle != -1">HashTable.Table[Handle].Key</Item>
+            <Item Name="[value]" Condition="Handle != -1">HashTable.Table[Handle].Value</Item>
+            <Item Name="[bucket]" ExcludeView="simple">HashIndex</Item>
+            <Item Name="[table]" ExcludeView="simple">HashTable</Item>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/listnode.natvis b/resources/visualstudio/wwlib/listnode.natvis
new file mode 100644
index 00000000000..dc33d3d54e2
--- /dev/null
+++ b/resources/visualstudio/wwlib/listnode.natvis
@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- GenericList embeds two sentinel nodes by value. FirstNode.NextNode is the first
+         real entry, and LastNode is recognised by having no NextNode of its own. -->
+    <Type Name="GenericList">
+        <DisplayString Condition="FirstNode.NextNode-&gt;NextNode == 0">{{ size=0 }}</DisplayString>
+        <DisplayString>{{ GenericList }}</DisplayString>
+        <Expand>
+            <CustomListItems>
+                <Variable Name="node" InitialValue="FirstNode.NextNode"/>
+                <Loop>
+                    <Break Condition="node == 0 || node-&gt;NextNode == 0"/>
+                    <Item>node</Item>
+                    <Exec>node = node-&gt;NextNode</Exec>
+                </Loop>
+            </CustomListItems>
+        </Expand>
+    </Type>
+
+    <!-- List's template argument is already a pointer type, so the item cast is ($T1)
+         rather than ($T1 *). This only works because GenericNode must be the first base
+         of the linked object, which is what the class comment in LISTNODE.h requires. -->
+    <Type Name="List&lt;*&gt;">
+        <DisplayString Condition="FirstNode.NextNode-&gt;NextNode == 0">{{ size=0 }}</DisplayString>
+        <DisplayString>{{ List }}</DisplayString>
+        <Expand>
+            <CustomListItems>
+                <Variable Name="node" InitialValue="FirstNode.NextNode"/>
+                <Loop>
+                    <Break Condition="node == 0 || node-&gt;NextNode == 0"/>
+                    <Item>($T1)node</Item>
+                    <Exec>node = node-&gt;NextNode</Exec>
+                </Loop>
+            </CustomListItems>
+        </Expand>
+    </Type>
+
+    <Type Name="GenericNode">
+        <DisplayString Condition="NextNode == 0 || PrevNode == 0">{{ unlinked }}</DisplayString>
+        <DisplayString>{{ GenericNode }}</DisplayString>
+        <Expand>
+            <Item Name="[next]">NextNode</Item>
+            <Item Name="[prev]">PrevNode</Item>
+        </Expand>
+    </Type>
+
+    <Type Name="Node&lt;*&gt;">
+        <DisplayString Condition="NextNode == 0 || PrevNode == 0">{{ unlinked }}</DisplayString>
+        <DisplayString>{{ Node }}</DisplayString>
+        <Expand>
+            <Item Name="[next]">($T1)NextNode</Item>
+            <Item Name="[prev]">($T1)PrevNode</Item>
+        </Expand>
+    </Type>
+
+    <Type Name="DataNode&lt;*&gt;">
+        <DisplayString>{Value}</DisplayString>
+        <Expand>
+            <Item Name="[value]">Value</Item>
+            <Item Name="[next]" ExcludeView="simple">(DataNode&lt;$T1&gt; *)NextNode</Item>
+            <Item Name="[prev]" ExcludeView="simple">(DataNode&lt;$T1&gt; *)PrevNode</Item>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/mpsc_intrusive_queue.natvis b/resources/visualstudio/wwlib/mpsc_intrusive_queue.natvis
new file mode 100644
index 00000000000..543f35d07ff
--- /dev/null
+++ b/resources/visualstudio/wwlib/mpsc_intrusive_queue.natvis
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- Push prepends, and the chain is only reversed inside Flush, so the entries below
+         are listed newest first, which is the reverse of the order a consumer will see. -->
+    <Type Name="MPSCIntrusiveQueue&lt;*&gt;">
+        <DisplayString Condition="m_head == 0">{{ empty }}</DisplayString>
+        <DisplayString>{{ MPSCIntrusiveQueue }}</DisplayString>
+        <Expand>
+            <CustomListItems>
+                <Variable Name="node" InitialValue="m_head"/>
+                <Loop>
+                    <Break Condition="node == 0"/>
+                    <Item>node</Item>
+                    <Exec>node = node-&gt;next</Exec>
+                </Loop>
+            </CustomListItems>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/multilist.natvis b/resources/visualstudio/wwlib/multilist.natvis
new file mode 100644
index 00000000000..22e9d604af9
--- /dev/null
+++ b/resources/visualstudio/wwlib/multilist.natvis
@@ -0,0 +1,103 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- Head is an embedded sentinel and the list is circular, so the walk ends when it
+         comes back round to &Head rather than on a null link. -->
+    <Type Name="GenericMultiListClass">
+        <DisplayString Condition="Head.Next == &amp;Head">{{ size=0 }}</DisplayString>
+        <DisplayString>{{ GenericMultiList }}</DisplayString>
+        <Expand>
+            <CustomListItems>
+                <Variable Name="node" InitialValue="Head.Next"/>
+                <Loop>
+                    <Break Condition="node == &amp;Head"/>
+                    <Item>node-&gt;Object</Item>
+                    <Exec>node = node-&gt;Next</Exec>
+                </Loop>
+            </CustomListItems>
+        </Expand>
+    </Type>
+
+    <!-- Must be spelled out even though GenericMultiListClass already matches by
+         inheritance, so that the entries come out as the list's own object type. -->
+    <Type Name="MultiListClass&lt;*&gt;">
+        <DisplayString Condition="Head.Next == &amp;Head">{{ size=0 }}</DisplayString>
+        <DisplayString>{{ MultiList }}</DisplayString>
+        <Expand>
+            <CustomListItems>
+                <Variable Name="node" InitialValue="Head.Next"/>
+                <Loop>
+                    <Break Condition="node == &amp;Head"/>
+                    <Item>($T1 *)node-&gt;Object</Item>
+                    <Exec>node = node-&gt;Next</Exec>
+                </Loop>
+            </CustomListItems>
+        </Expand>
+    </Type>
+
+    <Type Name="RefMultiListClass&lt;*&gt;">
+        <DisplayString Condition="Head.Next == &amp;Head">{{ size=0 }}</DisplayString>
+        <DisplayString>{{ RefMultiList }}</DisplayString>
+        <Expand>
+            <CustomListItems>
+                <Variable Name="node" InitialValue="Head.Next"/>
+                <Loop>
+                    <Break Condition="node == &amp;Head"/>
+                    <Item>($T1 *)node-&gt;Object</Item>
+                    <Exec>node = node-&gt;Next</Exec>
+                </Loop>
+            </CustomListItems>
+        </Expand>
+    </Type>
+
+    <!-- ListNode chains across every list the object is in, via NextList. -->
+    <Type Name="MultiListObjectClass">
+        <DisplayString Condition="ListNode == 0">{{ not in any list }}</DisplayString>
+        <DisplayString>{{ in list(s) }}</DisplayString>
+        <Expand>
+            <Synthetic Name="[lists]">
+                <DisplayString>lists this object belongs to</DisplayString>
+                <Expand>
+                    <CustomListItems>
+                        <Variable Name="node" InitialValue="ListNode"/>
+                        <Loop>
+                            <Break Condition="node == 0"/>
+                            <Item>node-&gt;List</Item>
+                            <Exec>node = node-&gt;NextList</Exec>
+                        </Loop>
+                    </CustomListItems>
+                </Expand>
+            </Synthetic>
+        </Expand>
+    </Type>
+
+    <Type Name="MultiListNodeClass">
+        <DisplayString>{{ object={Object} }}</DisplayString>
+        <Expand>
+            <Item Name="[object]">Object</Item>
+            <Item Name="[list]">List</Item>
+            <Item Name="[next]" ExcludeView="simple">Next</Item>
+            <Item Name="[prev]" ExcludeView="simple">Prev</Item>
+            <Item Name="[next list]" ExcludeView="simple">NextList</Item>
+        </Expand>
+    </Type>
+
+    <Type Name="GenericMultiListIterator">
+        <DisplayString Condition="CurNode == &amp;List-&gt;Head">{{ done }}</DisplayString>
+        <DisplayString>{CurNode-&gt;Object}</DisplayString>
+        <Expand>
+            <Item Name="[current]" Condition="CurNode != &amp;List-&gt;Head">CurNode-&gt;Object</Item>
+            <Item Name="[list]">List</Item>
+        </Expand>
+    </Type>
+
+    <Type Name="MultiListIterator&lt;*&gt;">
+        <AlternativeType Name="RefMultiListIterator&lt;*&gt;"/>
+        <AlternativeType Name="PriorityMultiListIterator&lt;*&gt;"/>
+        <DisplayString Condition="CurNode == &amp;List-&gt;Head">{{ done }}</DisplayString>
+        <DisplayString>{*($T1 *)CurNode-&gt;Object}</DisplayString>
+        <Expand>
+            <Item Name="[current]" Condition="CurNode != &amp;List-&gt;Head">($T1 *)CurNode-&gt;Object</Item>
+            <Item Name="[list]">List</Item>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/sharebuf.natvis b/resources/visualstudio/wwlib/sharebuf.natvis
new file mode 100644
index 00000000000..ed69a353423
--- /dev/null
+++ b/resources/visualstudio/wwlib/sharebuf.natvis
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <Type Name="ShareBufferClass&lt;*&gt;">
+        <DisplayString>{{ size={Count} }}</DisplayString>
+        <Expand>
+            <Item Name="[size]" ExcludeView="simple">Count</Item>
+            <Item Name="[refs]" ExcludeView="simple">NumRefs</Item>
+            <!-- Msg only exists in RTS_DEBUG builds. -->
+            <Item Name="[msg]" Optional="true" ExcludeView="simple">Msg,s</Item>
+            <ArrayItems>
+                <Size>Count</Size>
+                <ValuePointer>Array</ValuePointer>
+            </ArrayItems>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/simplevec.natvis b/resources/visualstudio/wwlib/simplevec.natvis
new file mode 100644
index 00000000000..8d46ec4fc69
--- /dev/null
+++ b/resources/visualstudio/wwlib/simplevec.natvis
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <Type Name="SimpleVecClass&lt;*&gt;">
+        <DisplayString>{{ size={VectorMax} }}</DisplayString>
+        <Expand>
+            <Item Name="[size]" ExcludeView="simple">VectorMax</Item>
+            <ArrayItems>
+                <Size>VectorMax</Size>
+                <ValuePointer>Vector</ValuePointer>
+            </ArrayItems>
+        </Expand>
+    </Type>
+
+    <!-- Must be spelled out even though SimpleVecClass already matches by inheritance,
+         because the live element count here is ActiveCount and not VectorMax. -->
+    <Type Name="SimpleDynVecClass&lt;*&gt;">
+        <DisplayString>{{ size={ActiveCount} }}</DisplayString>
+        <Expand>
+            <Item Name="[size]" ExcludeView="simple">ActiveCount</Item>
+            <Item Name="[capacity]" ExcludeView="simple">VectorMax</Item>
+            <ArrayItems>
+                <Size>ActiveCount</Size>
+                <ValuePointer>Vector</ValuePointer>
+            </ArrayItems>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/slist.natvis b/resources/visualstudio/wwlib/slist.natvis
new file mode 100644
index 00000000000..f7f26038b3e
--- /dev/null
+++ b/resources/visualstudio/wwlib/slist.natvis
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- The links and the payload both live in the GenericSLNode base as void pointers,
+         so each has to be cast back to the list's element type on the way out. -->
+    <Type Name="SList&lt;*&gt;">
+        <DisplayString Condition="HeadNode == 0">{{ size=0 }}</DisplayString>
+        <DisplayString>{{ SList }}</DisplayString>
+        <Expand>
+            <CustomListItems>
+                <Variable Name="node" InitialValue="HeadNode"/>
+                <Loop>
+                    <Break Condition="node == 0"/>
+                    <Item>($T1 *)node-&gt;NodeData</Item>
+                    <Exec>node = (SLNode&lt;$T1&gt; *)node-&gt;NodeNext</Exec>
+                </Loop>
+            </CustomListItems>
+        </Expand>
+    </Type>
+
+    <Type Name="SLNode&lt;*&gt;">
+        <DisplayString>{*($T1 *)NodeData}</DisplayString>
+        <Expand>
+            <Item Name="[data]">($T1 *)NodeData</Item>
+            <Item Name="[next]">(SLNode&lt;$T1&gt; *)NodeNext</Item>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/uarray.natvis b/resources/visualstudio/wwlib/uarray.natvis
new file mode 100644
index 00000000000..93a7368af86
--- /dev/null
+++ b/resources/visualstudio/wwlib/uarray.natvis
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- The unique items live in a DynamicVectorClass of HashItem, so the element
+         value has to be reached through the Item member of each slot. -->
+    <Type Name="UniqueArrayClass&lt;*&gt;">
+        <DisplayString>{{ size={UniqueItems.ActiveCount} }}</DisplayString>
+        <Expand>
+            <Item Name="[size]" ExcludeView="simple">UniqueItems.ActiveCount</Item>
+            <Item Name="[capacity]" ExcludeView="simple">UniqueItems.VectorMax</Item>
+            <Item Name="[hash table size]" ExcludeView="simple">HashTableSize</Item>
+            <IndexListItems>
+                <Size>UniqueItems.ActiveCount</Size>
+                <ValueNode>UniqueItems.Vector[$i].Item</ValueNode>
+            </IndexListItems>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/vector.natvis b/resources/visualstudio/wwlib/vector.natvis
new file mode 100644
index 00000000000..af37c172136
--- /dev/null
+++ b/resources/visualstudio/wwlib/vector.natvis
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <Type Name="VectorClass&lt;*&gt;">
+        <DisplayString>{{ size={VectorMax} }}</DisplayString>
+        <Expand>
+            <Item Name="[size]" ExcludeView="simple">VectorMax</Item>
+            <Item Name="[allocated]" ExcludeView="simple">IsAllocated</Item>
+            <ArrayItems>
+                <Size>VectorMax</Size>
+                <ValuePointer>Vector</ValuePointer>
+            </ArrayItems>
+        </Expand>
+    </Type>
+
+    <!-- Must be spelled out even though VectorClass already matches by inheritance,
+         because the live element count here is ActiveCount and not VectorMax. -->
+    <Type Name="DynamicVectorClass&lt;*&gt;">
+        <DisplayString>{{ size={ActiveCount} }}</DisplayString>
+        <Expand>
+            <Item Name="[size]" ExcludeView="simple">ActiveCount</Item>
+            <Item Name="[capacity]" ExcludeView="simple">VectorMax</Item>
+            <Item Name="[growth step]" ExcludeView="simple">GrowthStep</Item>
+            <ArrayItems>
+                <Size>ActiveCount</Size>
+                <ValuePointer>Vector</ValuePointer>
+            </ArrayItems>
+        </Expand>
+    </Type>
+
+    <!-- Copy holds the value of element LastIndex and is only written back into BitArray
+         once a different index is fetched, so the packed bit for LastIndex is stale. -->
+    <Type Name="BooleanVectorClass">
+        <DisplayString>{{ size={BitCount} }}</DisplayString>
+        <Expand>
+            <Item Name="[size]" ExcludeView="simple">BitCount</Item>
+            <Item Name="[cached index]" ExcludeView="simple">LastIndex</Item>
+            <Item Name="[cached value]" ExcludeView="simple">Copy</Item>
+            <IndexListItems>
+                <Size>BitCount</Size>
+                <ValueNode>$i == LastIndex ? Copy : (bool)((BitArray.Vector[$i / 8] &gt;&gt; ($i % 8)) &amp; 1)</ValueNode>
+            </IndexListItems>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/widestring.natvis b/resources/visualstudio/wwlib/widestring.natvis
new file mode 100644
index 00000000000..815f6c61fab
--- /dev/null
+++ b/resources/visualstudio/wwlib/widestring.natvis
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- m_Buffer points just past a { int allocated_length; int length; } header, so the
+         two counters sit at [-2] and [-1]. An empty string instead points at the shared
+         static m_EmptyString, which has no header in front of it, hence the condition.
+         A stored length of 0 means not yet computed, for example after a write through
+         Get_Buffer, so it falls back to counting like Get_Length does. -->
+    <Type Name="WideStringClass">
+        <DisplayString>{m_Buffer,su}</DisplayString>
+        <StringView>m_Buffer,su</StringView>
+        <Expand>
+            <Item Name="[length]" Optional="true" Condition="m_Buffer != m_EmptyString" ExcludeView="simple">((int *)m_Buffer)[-1] != 0 ? ((int *)m_Buffer)[-1] : (int)wcsnlen(m_Buffer, ((int *)m_Buffer)[-2])</Item>
+            <Item Name="[capacity]" Optional="true" Condition="m_Buffer != m_EmptyString" ExcludeView="simple">((int *)m_Buffer)[-2]</Item>
+            <Item Name="[str]">m_Buffer,su</Item>
+            <Item Name="[ptr]" ExcludeView="simple">m_Buffer</Item>
+        </Expand>
+    </Type>
+</AutoVisualizer>
diff --git a/resources/visualstudio/wwlib/wwstring.natvis b/resources/visualstudio/wwlib/wwstring.natvis
new file mode 100644
index 00000000000..9a4a1118879
--- /dev/null
+++ b/resources/visualstudio/wwlib/wwstring.natvis
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?> 
+<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
+    <!-- m_Buffer points just past a { int allocated_length; int length; } header, so the
+         two counters sit at [-2] and [-1]. An empty string instead points at the shared
+         static m_EmptyString, which has no header in front of it, hence the condition.
+         A stored length of 0 means not yet computed, for example after a write through
+         Get_Buffer, so it falls back to counting like Get_Length does. -->
+    <Type Name="StringClass">
+        <DisplayString>{m_Buffer,s}</DisplayString>
+        <StringView>m_Buffer,s</StringView>
+        <Expand>
+            <Item Name="[length]" Optional="true" Condition="m_Buffer != m_EmptyString" ExcludeView="simple">((int *)m_Buffer)[-1] != 0 ? ((int *)m_Buffer)[-1] : (int)strnlen(m_Buffer, ((int *)m_Buffer)[-2])</Item>
+            <Item Name="[capacity]" Optional="true" Condition="m_Buffer != m_EmptyString" ExcludeView="simple">((int *)m_Buffer)[-2]</Item>
+            <Item Name="[str]">m_Buffer,s</Item>
+            <Item Name="[ptr]" ExcludeView="simple">m_Buffer</Item>
+        </Expand>
+    </Type>
+</AutoVisualizer>