diff --git a/packages/renderer-process/src/parts/ViewletModule/ViewletModule.ts b/packages/renderer-process/src/parts/ViewletModule/ViewletModule.ts
index 2facb52..abf5108 100644
--- a/packages/renderer-process/src/parts/ViewletModule/ViewletModule.ts
+++ b/packages/renderer-process/src/parts/ViewletModule/ViewletModule.ts
@@ -34,7 +34,6 @@ import * as ViewletPanel from '../ViewletPanel/ViewletPanel.ts'
 import * as ViewletReferences from '../ViewletReferences/ViewletReferences.ts'
 import * as ViewletRunAndDebug from '../ViewletRunAndDebug/ViewletRunAndDebug.ts'
 import * as ViewletScreenCapture from '../ViewletScreenCapture/ViewletScreenCapture.ts'
-import * as ViewletSideBar from '../ViewletSideBar/ViewletSideBar.ts'
 import * as ViewletSimpleBrowser from '../ViewletSimpleBrowser/ViewletSimpleBrowser.ts'
 import * as ViewletSourceControl from '../ViewletSourceControl/ViewletSourceControl.ts'
 import * as ViewletStatusBar from '../ViewletStatusBar/ViewletStatusBar.ts'
@@ -120,8 +119,6 @@ export const load = (moduleId) => {
       return ViewletRunAndDebug
     case ViewletModuleId.ScreenCapture:
       return ViewletScreenCapture
-    case ViewletModuleId.SideBar:
-      return ViewletSideBar
     case ViewletModuleId.SimpleBrowser:
       return ViewletSimpleBrowser
     case ViewletModuleId.SourceControl:
diff --git a/packages/renderer-process/src/parts/ViewletSideBar/ViewletSideBar.ts b/packages/renderer-process/src/parts/ViewletSideBar/ViewletSideBar.ts
deleted file mode 100644
index 7aa5be7..0000000
--- a/packages/renderer-process/src/parts/ViewletSideBar/ViewletSideBar.ts
+++ /dev/null
@@ -1,70 +0,0 @@
-import * as AriaRoleDescriptionType from '../AriaRoleDescriptionType/AriaRoleDescriptionType.ts'
-import * as AriaRoles from '../AriaRoles/AriaRoles.ts'
-import * as Assert from '../Assert/Assert.ts'
-import * as AttachEvents from '../AttachEvents/AttachEvents.ts'
-import * as DomEventType from '../DomEventType/DomEventType.ts'
-import * as VirtualDom from '../VirtualDom/VirtualDom.ts'
-import * as ViewletSideBarEvents from './ViewletSideBarEvents.ts'
-
-export const create = () => {
-  const $SideBarTitleAreaTitle = document.createElement('h2')
-  $SideBarTitleAreaTitle.className = 'SideBarTitleAreaTitle'
-
-  const $SideBarTitleArea = document.createElement('div')
-  $SideBarTitleArea.className = 'SideBarTitleArea'
-  $SideBarTitleArea.append($SideBarTitleAreaTitle)
-
-  const $Viewlet = document.createElement('div')
-  $Viewlet.id = 'SideBar'
-  $Viewlet.className = 'Viewlet SideBar'
-  $Viewlet.role = AriaRoles.Complementary
-  $Viewlet.ariaRoleDescription = AriaRoleDescriptionType.SideBar
-  $Viewlet.append($SideBarTitleArea)
-
-  return {
-    $Actions: undefined,
-    $SideBar: $Viewlet,
-    $SideBarContent: undefined,
-    $SideBarTitleArea,
-    $SideBarTitleAreaTitle,
-    $Viewlet,
-  }
-}
-
-export const attachEvents = (state) => {
-  const { $SideBarTitleArea } = state
-  AttachEvents.attachEvents($SideBarTitleArea, {
-    [DomEventType.Click]: ViewletSideBarEvents.handleHeaderClick,
-  })
-}
-
-export const dispose = (state) => {
-  Assert.object(state)
-  state.$SideBar.replaceChildren()
-}
-
-export const setTitle = (state, name) => {
-  const { $SideBarTitleAreaTitle } = state
-  $SideBarTitleAreaTitle.title = name
-  $SideBarTitleAreaTitle.textContent = name
-}
-
-export const setActionsDom = (state, actions, parentId, eventMap = {}) => {
-  if (actions.length === 0) {
-    return
-  }
-
-  const { $Actions, $SideBarTitleArea } = state
-  const $Parent = document.createElement('div')
-  const $NewViewlet = VirtualDom.rememberFocus($Parent, actions, {}, parentId)
-  if ($Actions) {
-    $Actions.replaceWith($NewViewlet)
-  } else {
-    $SideBarTitleArea.append($NewViewlet)
-  }
-  state.$Actions = $NewViewlet
-}
-
-export const focus = async () => {
-  // await
-}
diff --git a/packages/renderer-process/src/parts/ViewletSideBar/ViewletSideBarEvents.ts b/packages/renderer-process/src/parts/ViewletSideBar/ViewletSideBarEvents.ts
deleted file mode 100644
index 4bb76cf..0000000
--- a/packages/renderer-process/src/parts/ViewletSideBar/ViewletSideBarEvents.ts
+++ /dev/null
@@ -1,18 +0,0 @@
-import * as ComponentUid from '../ComponentUid/ComponentUid.ts'
-import * as GetNodeIndex from '../GetNodeIndex/GetNodeIndex.ts'
-import * as ViewletSideBarFunctions from './ViewletSideBarFunctions.ts'
-
-const handleClickAction = (target, uid) => {
-  const index = GetNodeIndex.getNodeIndex(target)
-  if (target && target.dataset && target.dataset.command) {
-    ViewletSideBarFunctions.handleClickAction(uid, index, target.dataset.command)
-  }
-}
-
-export const handleHeaderClick = (event) => {
-  const { target } = event
-  const uid = ComponentUid.fromEvent(event)
-  if (target.classList.contains('IconButton')) {
-    handleClickAction(target, uid)
-  }
-}
diff --git a/packages/renderer-process/src/parts/ViewletSideBar/ViewletSideBarFunctions.ts b/packages/renderer-process/src/parts/ViewletSideBar/ViewletSideBarFunctions.ts
deleted file mode 100644
index 4fe68a5..0000000
--- a/packages/renderer-process/src/parts/ViewletSideBar/ViewletSideBarFunctions.ts
+++ /dev/null
@@ -1 +0,0 @@
-export * from '../ForwardCommand/ForwardCommand.ts'