diff --git a/package.json b/package.json
index 183002abd..03c8bba2e 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bldrs",
-  "version": "1.0.0-r689",
+  "version": "1.0.0-r705",
   "main": "src/index.jsx",
   "license": "MIT",
   "homepage": "https://github.com/bldrs-ai/Share",
diff --git a/src/Components/Buttons.jsx b/src/Components/Buttons.jsx
index d4383347b..ef533c931 100644
--- a/src/Components/Buttons.jsx
+++ b/src/Components/Buttons.jsx
@@ -116,9 +116,9 @@ export function CloseButton({onClick}) {
  *
  * @property {string} title Text to show in button
  * @property {Function} onClick callback
- * @property {object} icon Start icon to left of text
- * @property {boolean} border Default: false
- * @property {boolean} background Default: true
+ * @property {object} [icon] Start icon to left of text
+ * @property {boolean} [border] Default: false
+ * @property {boolean} [background] Default: true
  * @return {object} React component
  */
 export function RectangularButton({
@@ -129,7 +129,11 @@ export function RectangularButton({
   background = true,
 }) {
   assertDefined(title, onClick)
-  return <Button onClick={onClick} startIcon={icon} variant='rectangular'>{title}</Button>
+  return (
+    icon ?
+      <Button onClick={onClick} startIcon={icon} variant='rectangular'>{title}</Button> :
+      <Button onClick={onClick} variant='rectangular'>{title}</Button>
+  )
 }
 
 
diff --git a/src/Components/Dialog.jsx b/src/Components/Dialog.jsx
index 66d9e3df9..c9320f62e 100644
--- a/src/Components/Dialog.jsx
+++ b/src/Components/Dialog.jsx
@@ -1,8 +1,8 @@
 import React from 'react'
+import MuiDialog from '@mui/material/Dialog'
 import DialogActions from '@mui/material/DialogActions'
 import DialogContent from '@mui/material/DialogContent'
 import DialogTitle from '@mui/material/DialogTitle'
-import MuiDialog from '@mui/material/Dialog'
 import {RectangularButton, CloseButton} from '../Components/Buttons'
 import {assertDefined} from '../utils/assert'
 
diff --git a/src/Components/TabbedDialog.fixture.jsx b/src/Components/TabbedDialog.fixture.jsx
new file mode 100644
index 000000000..a83ebc3f0
--- /dev/null
+++ b/src/Components/TabbedDialog.fixture.jsx
@@ -0,0 +1,31 @@
+/* eslint-disable no-magic-numbers */
+import React from 'react'
+import FixtureContext from '../FixtureContext'
+import debug from '../utils/debug'
+import TabbedDialog from './TabbedDialog'
+
+
+const loremIpsum = (size) => `Lorem ipsum dolor sit amet, consectetur adipiscing elit,
+      sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. `.repeat(size)
+
+
+export default (
+  <FixtureContext>
+    <TabbedDialog
+      tabLabels={['Explore', 'Open', 'Save']}
+      headerLabels={['Explore Sample Projects', 'Open Project', 'Save Project']}
+      contentComponents={[
+        (<p key='1'>{loremIpsum(3)}</p>),
+        (<p key='2'>{loremIpsum(2)}</p>),
+        (<p key='3'>{loremIpsum(4)}</p>),
+      ]}
+      actionCbs={[
+        () => debug().log('clicked 1'),
+        () => debug().log('clicked 2'),
+        () => debug().log('clicked 3'),
+      ]}
+      isDialogDisplayed={true}
+      setIsDialogDisplayed={() => debug().log('setIsDialogDisplayed')}
+    />
+  </FixtureContext>
+)
diff --git a/src/Components/TabbedDialog.jsx b/src/Components/TabbedDialog.jsx
new file mode 100644
index 000000000..086bf2f42
--- /dev/null
+++ b/src/Components/TabbedDialog.jsx
@@ -0,0 +1,66 @@
+import React, {useState} from 'react'
+import MuiDialog from '@mui/material/Dialog'
+import DialogActions from '@mui/material/DialogActions'
+import DialogContent from '@mui/material/DialogContent'
+import DialogTitle from '@mui/material/DialogTitle'
+import {assertDefined, assertArraysEqualLength} from '../utils/assert'
+import {CloseButton, RectangularButton} from './Buttons'
+import Tabs from './Tabs'
+
+
+/**
+ * A Dialog with tabs to page between associated contents.
+ *
+ * @property {Array<string>} tabLabels Tab names
+ * @property {Array<string>} headerLabels Short messages describing the current operation
+ * @property {Array<React.Element>} contentComponents Components coresponding to the tabs
+ * @property {Array<React.Element>} actionCbs Callbacks for each component's ok button
+ * @property {boolean} isDialogDisplayed React var
+ * @property {Function} setIsDialogDisplayed React setter
+ * @property {boolean} [isTabsScrollable] Activate if the number of tabs is larger than 5
+ * @property {React.ReactElement} [icon] Leading icon above header description
+ * @property {string} [actionButtonLabels] Labels for action ok buttons
+ * @return {React.Component}
+ */
+export default function TabbedDialog({
+  tabLabels,
+  headerLabels,
+  contentComponents,
+  actionCbs,
+  isDialogDisplayed,
+  setIsDialogDisplayed,
+  isTabsScrollable = false,
+  icon,
+  actionButtonLabels,
+}) {
+  assertDefined(tabLabels, headerLabels, contentComponents, actionCbs, isDialogDisplayed, setIsDialogDisplayed)
+  assertArraysEqualLength(tabLabels, headerLabels, contentComponents, actionCbs)
+  const close = () => setIsDialogDisplayed(false)
+  const [currentTab, setCurrentTab] = useState(0)
+  return (
+    <MuiDialog
+      maxWidth={'xs'}
+      open={isDialogDisplayed}
+      onClose={close}
+      PaperProps={{variant: 'control'}}
+    >
+      <CloseButton onClick={close}/>
+      <DialogTitle>
+        {icon && <>{icon}<br/></>}
+        {headerLabels[currentTab]}
+      </DialogTitle>
+      <DialogContent>
+        <Tabs tabLabels={tabLabels} actionCb={setCurrentTab} isScrollable={isTabsScrollable}/>
+      </DialogContent>
+      <DialogContent>
+        {contentComponents[currentTab]}
+      </DialogContent>
+      <DialogActions>
+        <RectangularButton
+          title={actionButtonLabels ? actionButtonLabels[currentTab] : 'Ok'}
+          onClick={actionCbs[currentTab]}
+        />
+      </DialogActions>
+    </MuiDialog>
+  )
+}
diff --git a/src/Components/TabbedDialog.test.jsx b/src/Components/TabbedDialog.test.jsx
new file mode 100644
index 000000000..ad5968395
--- /dev/null
+++ b/src/Components/TabbedDialog.test.jsx
@@ -0,0 +1,43 @@
+import React from 'react'
+import {render, screen, fireEvent} from '@testing-library/react'
+import TabbedDialog from './TabbedDialog'
+
+
+describe('TabbedDialog', () => {
+  it('', () => {
+    const cb1 = jest.fn()
+    const cb2 = jest.fn()
+    const cb3 = jest.fn()
+    render(
+        <TabbedDialog
+          tabLabels={['Explore', 'Open', 'Save']}
+          headerLabels={['Explore Sample Projects', 'Open Project', 'Save Project']}
+          contentComponents={[
+            (<p key='1'>{'A content'}</p>),
+            (<p key='2'>{'B content'}</p>),
+            (<p key='3'>{'C content'}</p>),
+          ]}
+          actionCbs={[cb1, cb2, cb3]}
+          actionButtonLabels={['A OK', 'B OK', 'C OK']}
+          isDialogDisplayed={true}
+          setIsDialogDisplayed={jest.fn()}
+        />)
+
+    fireEvent.click(screen.getByText('A OK'))
+    expect(cb1.mock.calls.length).toBe(1)
+    expect(cb2.mock.calls.length).toBe(0)
+    expect(cb3.mock.calls.length).toBe(0)
+
+    fireEvent.click(screen.getByText('Open'))
+    fireEvent.click(screen.getByText('B OK'))
+    expect(cb1.mock.calls.length).toBe(1)
+    expect(cb2.mock.calls.length).toBe(1)
+    expect(cb3.mock.calls.length).toBe(0)
+
+    fireEvent.click(screen.getByText('Save'))
+    fireEvent.click(screen.getByText('C OK'))
+    expect(cb1.mock.calls.length).toBe(1)
+    expect(cb2.mock.calls.length).toBe(1)
+    expect(cb3.mock.calls.length).toBe(1)
+  })
+})
diff --git a/src/Components/Tabs.fixture.jsx b/src/Components/Tabs.fixture.jsx
new file mode 100644
index 000000000..1f0e6d2c4
--- /dev/null
+++ b/src/Components/Tabs.fixture.jsx
@@ -0,0 +1,14 @@
+import React from 'react'
+import Tabs from './Tabs'
+import FixtureContext from '../FixtureContext'
+import debug from '../utils/debug'
+
+
+export default (
+  <FixtureContext>
+    <Tabs
+      tabLabels={['Explore', 'Open', 'Save']}
+      actionCb={() => debug().log('Clicked')}
+    />
+  </FixtureContext>
+)
diff --git a/src/Components/Tabs.jsx b/src/Components/Tabs.jsx
new file mode 100644
index 000000000..282b32de7
--- /dev/null
+++ b/src/Components/Tabs.jsx
@@ -0,0 +1,25 @@
+import React, {useState} from 'react'
+import MuiTabs from '@mui/material/Tabs'
+import Tab from '@mui/material/Tab'
+import {assertDefined} from '../utils/assert'
+
+
+/**
+ * @property {Array<string>} tabLabels Names of each tab
+ * @property {Function} actionCb callBack fired when the tabs is selected, returns currect tab number
+ * @property {boolean} [isScrollable] Enable scrolling for many (> 5) tabs
+ * @return {React.Component}
+ */
+export default function Tabs({tabLabels, actionCb, isScrollable = false}) {
+  assertDefined(tabLabels, actionCb)
+  const [value, setValue] = useState(0)
+  const handleChange = (event, newValue) => {
+    setValue(newValue)
+    actionCb(newValue)
+  }
+  return (
+    <MuiTabs value={value} onChange={handleChange} centered variant={isScrollable ? 'scrollable' : 'fullWidth'}>
+      {tabLabels.map((tab) => <Tab key={tab} label={tab}/>)}
+    </MuiTabs>
+  )
+}
diff --git a/src/Styles.jsx b/src/Styles.jsx
index 642e2773e..39102c1ff 100644
--- a/src/Styles.jsx
+++ b/src/Styles.jsx
@@ -26,7 +26,7 @@ export default function Styles({theme}) {
         },
         '.MuiDialog-paper': {
           textAlign: 'center',
-          padding: '1em 0.5em',
+          padding: '0.5em',
         },
         '.MuiDialog-paper > .MuiButtonBase-root': {
           position: 'absolute',
@@ -65,7 +65,7 @@ export default function Styles({theme}) {
           height: '12px',
         },
         '*::-webkit-scrollbar': {
-          width: '10px',
+          width: '2px',
           background: theme.palette.secondary.background,
         },
         '*::-webkit-scrollbar-thumb': {
diff --git a/src/theme/Components.js b/src/theme/Components.js
index c9d2d6834..29d015b71 100644
--- a/src/theme/Components.js
+++ b/src/theme/Components.js
@@ -2,7 +2,7 @@
  * @param {object} Mui color palette.
  * @return {object} Mui component overrides.
  */
-export function getComponentOverrides(palette) {
+export function getComponentOverrides(palette, typography) {
   return {
     MuiTreeItem: {
       styleOverrides: {
@@ -55,6 +55,19 @@ export function getComponentOverrides(palette) {
         },
       },
     },
+    MuiDialog: {
+      styleOverrides: {
+        root: {
+        },
+      },
+    },
+    MuiDialogContent: {
+      styleOverrides: {
+        root: {
+          padding: '0px 10px',
+        },
+      },
+    },
     MuiPaper: {
       styleOverrides: {
         root: {
@@ -75,6 +88,44 @@ export function getComponentOverrides(palette) {
         },
       ],
     },
+    MuiTab: {
+      styleOverrides: {
+        root: {
+          'textTransform': 'none',
+          'minWidth': 0,
+          'fontSize': '.9em',
+          'fontWeight': typography.fontWeight,
+          'marginRight': 0,
+          'color': palette.primary.contrastText,
+          'fontFamily': typography.fontFamily,
+          '&:hover': {
+            color: palette.secondary.main,
+          },
+          '&.Mui-selected': {
+            color: palette.secondary.main,
+            fontWeight: typography.fontWeight,
+          },
+          '&.Mui-focusVisible': {
+            backgroundColor: 'green',
+          },
+          '@media (max-width: 700px)': {
+            fontSize: '.8em',
+          },
+        },
+      },
+    },
+    MuiTabs: {
+      styleOverrides: {
+        root: {
+          'paddingBottom': '12px',
+          'width': '100%',
+          '& .MuiTabs-indicator': {
+            backgroundColor: palette.secondary.main,
+          },
+        },
+      },
+    },
+
     MuiCardActions: {
       styleOverrides: {
         root: {
diff --git a/src/theme/Theme.jsx b/src/theme/Theme.jsx
index 215dfa79e..4d3f98649 100644
--- a/src/theme/Theme.jsx
+++ b/src/theme/Theme.jsx
@@ -53,7 +53,7 @@ function loadTheme(mode, setMode, themeChangeListeners) {
   // https://mui.com/customization/dark-mode/
   const activePalette = mode === Themes.Day ? day : night
   const theme = {
-    components: getComponentOverrides(activePalette),
+    components: getComponentOverrides(activePalette, getTypography()),
     typography: getTypography(),
     shape: {borderRadius: 8},
     palette: activePalette,
diff --git a/src/theme/Typography.js b/src/theme/Typography.js
index 93e3723f1..38443c642 100644
--- a/src/theme/Typography.js
+++ b/src/theme/Typography.js
@@ -13,6 +13,7 @@ export function getTypography() {
     fontFamily: fontFamily,
     fontSize: fontSize,
     letterSpacing: letterSpacing,
+    fontWeight: fontWeight,
     lineHeight: lineHeight,
     h1: {fontSize: '1.3em', fontWeight},
     h2: {fontSize: '1.2em', fontWeight},
diff --git a/src/utils/assert.js b/src/utils/assert.js
index c91dfd661..d54ea28d2 100644
--- a/src/utils/assert.js
+++ b/src/utils/assert.js
@@ -25,6 +25,11 @@ export function assertDefined(...args) {
     if (Object.prototype.hasOwnProperty.call(args, ndx)) {
       const arg = args[ndx]
       assert(arg !== null && arg !== undefined, `Arg ${ndx} is not defined`)
+      if (Array.isArray(arg)) {
+        for (let i = 0; i < arg.length; i++) {
+          assertDefined(arg[i], `Arg ${ndx} is an array with undefined index ${i}`)
+        }
+      }
     }
   }
   if (args.length === 1) {
@@ -44,3 +49,23 @@ export function assertDefinedBoolean(arg) {
   }
   return false
 }
+
+
+/**
+ * @param {any} arrays Variable length arguments to assert are defined.
+ * @return {Array<Array<any>>} The arrays
+ */
+export function assertArraysEqualLength(...arrays) {
+  if (arrays.length <= 1) {
+    throw new Error('Expected multiple arrays')
+  }
+  const arrLength = arrays[0].length
+  for (const ndx in arrays) {
+    if (Object.prototype.hasOwnProperty.call(arrays, ndx)) {
+      const array = arrays[ndx]
+      assertDefined(array)
+      assert(arrLength === array.length, `Array ${ndx} has unexpected length != ${array.length}`)
+    }
+  }
+  return arrays
+}
diff --git a/src/utils/assert.test.js b/src/utils/assert.test.js
index e3aa6650c..b5295baec 100644
--- a/src/utils/assert.test.js
+++ b/src/utils/assert.test.js
@@ -1,6 +1,8 @@
+/* eslint-disable no-magic-numbers */
 import {
   assert,
   assertDefined,
+  assertArraysEqualLength,
 } from './assert'
 
 
@@ -15,8 +17,28 @@ test('assert', () => {
 })
 
 
-test('assert', () => {
+test('assertDefined', () => {
   assertDefined(1)
+  assertDefined(1, 2)
+  assertDefined(1, 2, 3)
+  assertDefined([])
+  assertDefined([], [])
+  assertDefined([], [], [])
+  expectFailure(() => {
+    assertDefined([undefined])
+  })
+  expectFailure(() => {
+    assertDefined([1], [undefined])
+  })
+  expectFailure(() => {
+    assertDefined([undefined], [1])
+  })
+  expectFailure(() => {
+    assertDefined([undefined], [1])
+  })
+  expectFailure(() => {
+    assertDefined([undefined], [undefined])
+  })
   expectFailure(() => {
     assertDefined(undefined)
   })
@@ -37,6 +59,22 @@ test('assert', () => {
 })
 
 
+test('assertArraysEqualLength', () => {
+  expectFailure(() => {
+    assertArraysEqualLength()
+  })
+  expectFailure(() => {
+    assertArraysEqualLength([])
+  })
+  assertArraysEqualLength([], [])
+  assertArraysEqualLength([], [], [])
+  assertArraysEqualLength([], [], [], [])
+
+  assertArraysEqualLength([1, 1, 1], [2, 2, 2])
+  assertArraysEqualLength([1, 1, 1], [2, 2, 2], [3, 3, 3])
+})
+
+
 /**
  * Catches expected failures or throws if no failure.
  *