diff --git a/packages/client/src/App.vue b/packages/client/src/App.vue
index 1305a549..3c1446a6 100644
--- a/packages/client/src/App.vue
+++ b/packages/client/src/App.vue
@@ -2,6 +2,7 @@
 import type { Ref } from 'vue'
 import { useDevToolsBridge, useDevToolsState } from '@vue-devtools-next/core'
 import { isInChromePanel } from '@vue-devtools-next/shared'
+import { Pane, Splitpanes } from 'splitpanes'
 
 // @TODO: fix browser extension cross-origin localStorage issue
 useColorMode()
@@ -36,6 +37,13 @@ useEventListener('keydown', (e) => {
   if (e.code === 'KeyD' && e.altKey && e.shiftKey)
     bridge.value.emit('toggle-panel')
 })
+
+const splitScreenEnabled = computed(() => clientState.value.splitScreen.enabled)
+const isSplitScreenAvailable = splitScreenAvailable
+const splitScreenSize = computed({
+  get: () => clientState.value.splitScreen.size,
+  set: v => clientState.value.splitScreen.size = v,
+})
 </script>
 
 <template>
@@ -49,7 +57,16 @@ useEventListener('keydown', (e) => {
       h-full h-screen of-hidden font-sans bg-base
     >
       <SideNav v-if="!isUtilityView" of-x-hidden of-y-auto />
-      <RouterView />
+      <Splitpanes
+        @resize="splitScreenSize = $event.map((v) => v.size)"
+      >
+        <Pane h-full class="of-auto!" min-size="10" :size="splitScreenSize[0]">
+          <RouterView />
+        </Pane>
+        <Pane v-if="!isUtilityView && splitScreenEnabled && isSplitScreenAvailable" h-full class="of-auto!" :size="splitScreenSize[1]">
+          <SplitScreen />
+        </Pane>
+      </Splitpanes>
     </div>
   </main>
 </template>
diff --git a/packages/client/src/assets/styles/main.css b/packages/client/src/assets/styles/main.css
index a22c0c05..427bc954 100644
--- a/packages/client/src/assets/styles/main.css
+++ b/packages/client/src/assets/styles/main.css
@@ -25,39 +25,35 @@ body::-webkit-scrollbar {
 .splitpanes__splitter {
   position: relative;
 }
-
 .splitpanes__splitter:before {
   position: absolute;
   left: 0;
   top: 0;
-  transition: .2s ease;
+  transition: 0.2s ease;
   content: '';
   transition: opacity 0.4s;
   z-index: 1;
 }
-
 .splitpanes__splitter:hover:before {
   background: #8881;
   opacity: 1;
 }
-
-.splitpanes--vertical>.splitpanes__splitter {
+.splitpanes--vertical > .splitpanes__splitter {
   min-width: 0 !important;
   width: 0 !important;
+  @apply border-r border-base;
 }
-
-.splitpanes--horizontal>.splitpanes__splitter {
+.splitpanes--horizontal > .splitpanes__splitter {
   min-height: 0 !important;
   height: 0 !important;
+  --uno: border-t border-base;
 }
-
-.splitpanes--vertical>.splitpanes__splitter:before {
+.splitpanes--vertical > .splitpanes__splitter:before {
   left: -5px;
   right: -4px;
   height: 100%;
 }
-
-.splitpanes--horizontal>.splitpanes__splitter:before {
+.splitpanes--horizontal > .splitpanes__splitter:before {
   top: -5px;
   bottom: -4px;
   width: 100%;
diff --git a/packages/client/src/components/common/DockingPanel.vue b/packages/client/src/components/common/DockingPanel.vue
index 3e140bcc..e7c44493 100644
--- a/packages/client/src/components/common/DockingPanel.vue
+++ b/packages/client/src/components/common/DockingPanel.vue
@@ -13,6 +13,12 @@ const expandSidebar = computed({
   set: v => (devtoolsClientState.value.expandSidebar = v),
 })
 
+const splitScreenEnabled = computed({
+  get: () => devtoolsClientState.value.splitScreen.enabled,
+  set: v => (devtoolsClientState.value.splitScreen.enabled = v),
+})
+const isSplitScreenAvailable = splitScreenAvailable
+
 function refreshPage() {
   location.reload()
 }
@@ -36,6 +42,12 @@ function refreshPage() {
         <div i-carbon-settings-adjust /> Settings
       </VueButton>
     </div>
+    <div v-if="isSplitScreenAvailable" px3 py2 border="b base" flex="~ gap-2">
+      <VueButton outlined type="primary" @click="splitScreenEnabled = !splitScreenEnabled">
+        <div i-carbon-split-screen />
+        {{ splitScreenEnabled ? 'Close Split Screen' : 'Split Screen' }}
+      </VueButton>
+    </div>
     <div px3 py2 flex="~ gap2">
       <VueButton outlined type="primary" @click="refreshPage">
         Refresh Page
diff --git a/packages/client/src/components/common/SideNav.vue b/packages/client/src/components/common/SideNav.vue
index 5d4f0749..7c45bef9 100644
--- a/packages/client/src/components/common/SideNav.vue
+++ b/packages/client/src/components/common/SideNav.vue
@@ -9,7 +9,7 @@ const buttonMoreTabs = ref<HTMLButtonElement>()
 const sidebarExpanded = computed(() => devtoolsClientState.value.expandSidebar)
 const sidebarScrollable = ref(false)
 
-const { categorizedTabs: displayedTabs } = useAllTabs()
+const { enabledTabs } = useAllTabs()
 </script>
 
 <template>
@@ -50,7 +50,7 @@ const { categorizedTabs: displayedTabs } = useAllTabs()
       flex="~ auto col gap-0.5 items-center" w-full p1 class="no-scrollbar"
       :class="sidebarExpanded ? '' : 'of-x-hidden of-y-auto'"
     >
-      <template v-for="[name, tabs], idx of displayedTabs.filter(([{ hidden }, items]) => items.length && !hidden)" :key="name">
+      <template v-for="[name, tabs], idx of enabledTabs" :key="name">
         <!-- if is not the first nonempty list, render the top divider -->
         <div v-if="idx" my1 h-1px w-full border="b base" />
         <SideNavItem
diff --git a/packages/client/src/components/common/SideNavItem.vue b/packages/client/src/components/common/SideNavItem.vue
index 1ec22d72..fcdb48b6 100644
--- a/packages/client/src/components/common/SideNavItem.vue
+++ b/packages/client/src/components/common/SideNavItem.vue
@@ -24,6 +24,8 @@ const isActive = computed(() => route.path.startsWith(tabPath.value))
 function onClick() {
   if ('onClick' in props.tab && props.tab.onClick)
     props.tab.onClick()
+  else if (props.target === 'side')
+    devtoolsClientState.value.splitScreen.view = props.tab.name
 }
 </script>
 
diff --git a/packages/client/src/components/common/SplitScreen.vue b/packages/client/src/components/common/SplitScreen.vue
new file mode 100644
index 00000000..c19cce9c
--- /dev/null
+++ b/packages/client/src/components/common/SplitScreen.vue
@@ -0,0 +1,98 @@
+<script setup lang="ts">
+import { VueButton, VueCard, VueDropdown, VTooltip as vTooltip } from '@vue-devtools-next/ui'
+
+function close() {
+  devtoolsClientState.value.splitScreen.enabled = false
+}
+const splitScreenState = computed(() => devtoolsClientState.value.splitScreen)
+
+const { enabledTabs, flattenedTabs } = useAllTabs()
+const router = useRouter()
+const route = useRoute()
+const PageComponent = shallowRef()
+
+function isMatchedWithRoute(tab?: typeof flattenedTabs['value'][number]) {
+  const routePath = route.path.startsWith('/') ? route.path.slice(1) : route.path
+  return tab && 'path' in tab && routePath === tab.path
+}
+
+const currentTab = computed(() => {
+  const tab = flattenedTabs.value.find(tab => tab.name === splitScreenState.value.view)
+  return isMatchedWithRoute(tab) ? undefined : tab
+})
+
+watch(
+  () => currentTab.value,
+  (tab) => {
+    if (!tab)
+      return
+    const routes = router.getRoutes()
+    const matched = tab && 'path' in tab
+      ? routes.find(route => route.path === (tab.path.startsWith('/') ? tab.path : `/${tab.path}`))
+      : routes.find(route => route.name === 'custom-tab') // TODO: custom tabs
+    // if it's the same route as the main view, skip
+    const path = route.path.startsWith('/') ? route.path.slice(1) : route.path
+    if (matched?.path === path || route.params?.name === tab.name) {
+      PageComponent.value = undefined
+      return
+    }
+    const component = matched?.components?.default
+    if (typeof component === 'function')
+      PageComponent.value = defineAsyncComponent(component as any)
+    else
+      PageComponent.value = component
+  },
+  { immediate: true },
+)
+
+const showGridPanel = ref(false)
+</script>
+
+<template>
+  <div h-full h-screen of-hidden>
+    <div v-if="PageComponent && currentTab" border="b base" flex="~ gap1" z-99 px4 py3 navbar-glass>
+      <VueDropdown placement="bottom-start" :distance="12" :skidding="5" :shown="showGridPanel" trigger="click">
+        <div flex gap2 items-center cursor-pointer>
+          <div i-carbon-chevron-down text-sm op50 />
+          <TabIcon
+            text-xl
+            :icon="currentTab?.icon"
+            title="Settings"
+            :show-title="false"
+          />
+          <span capitalize>
+
+            {{ currentTab?.name }}
+          </span>
+        </div>
+        <template #popper>
+          <TabsGrid :categories="enabledTabs" target="side" />
+        </template>
+      </VueDropdown>
+      <div flex-auto />
+      <button
+        v-tooltip="'Close split screen'"
+        title="Close split screen" hover:bg-active px1 cursor-pointer
+        @click="close"
+      >
+        <div i-carbon:side-panel-open />
+      </button>
+    </div>
+    <div v-if="PageComponent && currentTab" of-auto style="height: calc(100% - 50px)">
+      <!-- TODO: custom tabs -->
+      <!-- Tabs -->
+      <component :is="PageComponent" :key="`tab-${currentTab.name}`" />
+    </div>
+    <PanelGrids v-else>
+      <span text-lg op50>
+        Select a tab to start
+      </span>
+      <VueCard px4 py2 bg-base>
+        <TabsGrid :categories="enabledTabs" target="side" />
+      </VueCard>
+      <VueButton type="warning" outlined mt2 @click="close">
+        Close Split Screen
+      </VueButton>
+    </PanelGrids>
+  </div>
+</template>
diff --git a/packages/client/src/components/common/TabsGrid.vue b/packages/client/src/components/common/TabsGrid.vue
new file mode 100644
index 00000000..c210f955
--- /dev/null
+++ b/packages/client/src/components/common/TabsGrid.vue
@@ -0,0 +1,26 @@
+<script setup lang="ts">
+import type { CategorizedTabs } from '~/composables/state-tab'
+
+defineProps<{
+  categories: CategorizedTabs
+  target: 'main' | 'side'
+}>()
+</script>
+
+<template>
+  <div flex="~ col gap-1" max-w-80 py1>
+    <template v-for="[name, tabs], idx of categories" :key="name">
+      <template v-if="tabs.length">
+        <div v-if="idx" h-1px border="b base" />
+        <div flex="~ wrap" px1>
+          <SideNavItem
+            v-for="tab of tabs"
+            :key="tab.name"
+            :target="target"
+            :tab="tab"
+          />
+        </div>
+      </template>
+    </template>
+  </div>
+</template>
diff --git a/packages/client/src/components/graph/GraphDrawer.vue b/packages/client/src/components/graph/GraphDrawer.vue
index d7daa24f..2f09a9cc 100644
--- a/packages/client/src/components/graph/GraphDrawer.vue
+++ b/packages/client/src/components/graph/GraphDrawer.vue
@@ -31,7 +31,7 @@ const keys = [
 </script>
 
 <template>
-  <VueDrawer v-model="show" :top="top" :close-outside="false" permanent content-blur>
+  <VueDrawer v-model="show" :top="top" :close-outside="false" permanent content-blur mount-to=".graph-body">
     <div class="w-300px" h-full of-auto>
       <div border-b border-base h-80px text-md p3 flex="~ col gap1">
         <span text-lg flex="~ gap2 items-center">
diff --git a/packages/client/src/composables/state-tab.ts b/packages/client/src/composables/state-tab.ts
index 7da547a0..c91ea485 100644
--- a/packages/client/src/composables/state-tab.ts
+++ b/packages/client/src/composables/state-tab.ts
@@ -17,6 +17,8 @@ export interface CategorizedCategory {
   hidden: boolean
 }
 
+export type CategorizedTabs = [CategorizedCategory, CategorizedTab[]][]
+
 export function useAllTabs() {
   const state = useDevToolsState()
   const customTabs = ref<CustomTab[]>(state.tabs.value || [])
@@ -49,7 +51,7 @@ export function useAllTabs() {
   const categorizedTabs = computed(() => {
     const { hiddenTabCategories, hiddenTabs, pinnedTabs } = devtoolsClientState.value.tabSettings
     // TODO: custom tabs
-    const tabs = allTabs.value.reduce<[CategorizedCategory, CategorizedTab[]][]>((prev, [category, tabs]) => {
+    const tabs = allTabs.value.reduce<CategorizedTabs>((prev, [category, tabs]) => {
       const data: [CategorizedCategory, CategorizedTab[]] = [{ hidden: false, name: category }, []]
       let hiddenCount = 0
       tabs.forEach((tab) => {
@@ -75,6 +77,17 @@ export function useAllTabs() {
     tabs[0][1].sort((a, b) => pinnedTabs.indexOf(a.name) - pinnedTabs.indexOf(b.name))
     return tabs
   })
+  const enabledTabs = computed(() => {
+    return categorizedTabs.value.reduce<CategorizedTabs>((prev, [meta, tabs]) => {
+      if (meta.hidden)
+        return prev
+      const filtered = tabs.filter(t => !t.hidden)
+      if (filtered.length)
+        prev.push([meta, filtered])
+      return prev
+    }, [])
+  })
+
   const bridgeRpc = useDevToolsBridgeRpc()
   onDevToolsClientConnected(() => {
     bridgeRpc.on.customTabsUpdated((data) => {
@@ -82,5 +95,5 @@ export function useAllTabs() {
     })
   })
 
-  return { categorizedTabs, flattenedTabs }
+  return { categorizedTabs, flattenedTabs, enabledTabs }
 }
diff --git a/packages/client/src/composables/state.ts b/packages/client/src/composables/state.ts
index 2bea1121..f7ef4e9b 100644
--- a/packages/client/src/composables/state.ts
+++ b/packages/client/src/composables/state.ts
@@ -8,6 +8,11 @@ export const devtoolsClientState: RemovableRef<{
   graphSettings: GraphSettings
   tabSettings: TabSettings
   expandSidebar: boolean
+  splitScreen: {
+    enabled: boolean
+    view: string
+    size: [number, number]
+  }
 }> = useLocalStorage('__VUE_DEVTOOLS_CLIENT_STATE__', {
   isFirstVisit: true,
   route: '/',
@@ -21,9 +26,27 @@ export const devtoolsClientState: RemovableRef<{
     hiddenTabs: [],
     pinnedTabs: [],
   },
+  splitScreen: {
+    enabled: false,
+    view: 'overview',
+    size: [50, 50],
+  },
   expandSidebar: false,
 }, { mergeDefaults: true })
 
 export function clearDevtoolsClientState() {
   devtoolsClientState.value = undefined
 }
+
+// #region split screen related
+const windowSize = useWindowSize()
+
+export const splitScreenAvailable = computed(() => windowSize.width.value > 1080)
+
+watch(() => devtoolsClientState.value.splitScreen.enabled, (enabled, o) => {
+  if (o && !enabled) {
+    // reset size
+    devtoolsClientState.value.splitScreen.size = [50, 50]
+  }
+})
+// #endregion
diff --git a/packages/client/src/constants/tab.ts b/packages/client/src/constants/tab.ts
index 604e8d6c..63316002 100644
--- a/packages/client/src/constants/tab.ts
+++ b/packages/client/src/constants/tab.ts
@@ -71,6 +71,8 @@ export const viteOnlyTabs = [
   'graph',
   'vite-inspect',
 ]
-export function getBuiltinTab(viteDetected: boolean) {
-  return viteDetected ? builtinTab : JSON.parse(JSON.stringify(builtinTab)).map(([_, tabs]) => [_, tabs.filter(t => !viteOnlyTabs.includes(t.name))])
+export function getBuiltinTab(viteDetected: boolean): [string, ModuleBuiltinTab[]][] {
+  return viteDetected
+    ? builtinTab
+    : deepClone(builtinTab).map(([_, tabs]) => [_, tabs.filter(t => !viteOnlyTabs.includes(t.name))])
 }
diff --git a/packages/client/src/pages/assets.vue b/packages/client/src/pages/assets.vue
index 99d4f527..064193d9 100644
--- a/packages/client/src/pages/assets.vue
+++ b/packages/client/src/pages/assets.vue
@@ -84,7 +84,7 @@ function toggleView() {
 </script>
 
 <template>
-  <PanelGrids h-full of-auto block>
+  <PanelGrids h-full of-auto block class="drawer-container relative">
     <Navbar ref="navbar" v-model:search="search" pb2 :no-padding="true">
       <template #actions>
         <div flex-none flex="~ gap2 items-center" text-lg>
@@ -162,7 +162,7 @@ function toggleView() {
     <VueDrawer
       :model-value="!!selected"
       :top="navbar"
-      permanent
+      permanent mount-to=".drawer-container"
       content-class="w120 text-sm" @update:model-value="(v) => {
         if (!v) selected = undefined
       }"