New On-device AI sorts your tabs by topic

Your tabs,
as a galaxy.

Tab Galaxy turns tab chaos into a living universe. Every site is a planet and every tab a moon. Find anything in a keystroke, warp straight to it, and feed the clutter to a black hole.

Download for Chrome How to install

Freev1.0.2 · 89 KBNo accountNothing leaves your device

Tab Galaxy Tab Galaxy · galaxy
Tab Galaxy showing 50 tabs as planets and moons around a glowing black hole
60fps with 300+ tabs open
4ways to see your tabs
0bytes of your data collected
89KBno dependencies, no bloat

Forty-seven tabs. Three windows. A song playing somewhere. You know the feeling. Tab Galaxy shows you everything at once, then helps you clean it up in seconds.

Features

A tab manager you’ll actually open.

Everything people love in tab managers, like search, sessions, cleanup and groups, built into one beautiful, fast canvas.

🕳️

Feed the black hole

Drag a tab, a selection, or an entire planet into the void and watch it spiral in. Changed your mind? Undo is always one click (or ⌘Z) away.

Dragging a planet toward the black hole, with a 'Release to close' hint Tabs spiraling into the black hole
✦

On-device AI topics

Chrome’s built-in Gemini Nano reads your tab titles and groups them into topics like “Kyoto Trip” or “Hydration Bug Hunt”. It runs entirely on your computer.

Tabs grouped into AI topics such as Kyoto Trip and Next.js Debugging
🚀

Warp drive

Click any moon to jump to that tab at light speed.

Warp effect with stars stretching into streaks
⌘

Find anything

⌘K searches every open tab and every saved session. Type > for commands.

Command palette listing actions such as sweeping frozen tabs
💚

Galaxy health

A live score with one-click fixes for frozen tabs, duplicates and memory.

Galaxy health panel with sweep, merge and sleep actions
🗄️

The Vault

Save a planet, a selection or everything, OneTab-style. Reopen in a click, rename, or export to a file.

Vault drawer listing saved sessions
🔭

Every tab tells a story

Hover a moon to see if it’s playing, pinned, sleeping, frozen or a duplicate.

Tooltip showing a playing tab with status chips
🖱️

Power on right-click

Group, sleep, stash, move or close whole planets at once.

Right-click menu on a planet
🪄Lasso select

Shift-drag to grab many tabs at once.

🏷️Real tab groups

Turn planets or AI topics into native Chrome groups.

👯Duplicate radar

Twin tabs are linked with a dashed line. Merge in one click.

💤Sleep tabs

Free memory without losing a single tab.

🧊Frozen detection

Tabs you’ve ignored turn icy, ready to sweep.

🔍Semantic zoom

Zoom in and moons reveal their titles.

🔊Sound design

Subtle synthesized cosmic sounds. Mute with M.

⌨️Keyboard first

Every action has a shortcut. Press ? anytime.

Four views

One galaxy. Four ways to see it.

Switch views with 1–4 and every tab flies to its new planet.

Sites view Topics view grouped by on-device AI Windows view with one planet per browser window Age view grouping tabs by last visit
Install

Ready for liftoff in under a minute.

Tab Galaxy installs straight from a download using Chrome’s developer mode. Follow these steps once and you’re set.

  1. 1

    Download & unzip

    Download the ZIP, then double-click it to unzip.right-click it and choose Extract All… (double-clicking only previews it). You’ll get a folder called TabGalaxy. Move it somewhere permanent like Documents; Chrome loads the extension from this folder.

  2. 2

    Open the extensions page

    Copy this address into a new tab and press Enter:

  3. 3

    Turn on Developer mode

    Flip the Developer mode switch in the top-right corner of the page.

  4. 4

    Click “Load unpacked”

    A new toolbar appears. Click Load unpacked and choose the TabGalaxy folder from step 1: the one that contains manifest.json. Windows’ Extract All puts it one level deeper, inside a second folder.

  5. 5

    Pin it & launch

    Click the puzzle icon 🧩 in Chrome’s toolbar, pin Tab Galaxy, then click the planet. Or press AltShiftG from any tab.

✨ Updating

Tab Galaxy tells you when a new version is out. Click the glowing Update button in the galaxy, then download, copy the new files over your TabGalaxy folder, and click Reload. Tab Galaxy reopens on the new version with your vault and settings intact.

💬 “Disable developer mode extensions?”

Chrome sometimes shows this pop-up at startup for extensions installed from a folder. It’s expected. Just close it or click Cancel.

🗑️ Uninstalling

Click Remove on Tab Galaxy’s card in chrome://extensions, then delete the folder. Nothing is left behind.

Flight manual

Everything you can do, at a glance.

Ten minutes with this guide and you’ll be navigating hundreds of tabs like a starship captain.

01The basics

Open Tab Galaxy by clicking its icon in the toolbar or pressing AltShiftG. Press it again from inside the galaxy to jump straight back to the tab you were on.

Your galaxy opens with a big bang. Then:

  • Planets are groups: a website, a topic, a window or an age, depending on the view.
  • Moons are your tabs, orbiting their planet. Bigger planets have more tabs; busy ones get rings.
  • The black hole in the center closes anything you drop into it.
  • The health panel (bottom left) scores your galaxy and offers quick fixes.
The galaxy overview

02Reading the galaxy

Every moon’s glow tells you something about that tab:

White ringThe visible tab in its window
Warm glowUsed in the last 10 minutes
Icy & sparklyFrozen: not visited in a while
Dim, dashedSleeping: unloaded to save memory
Green ripplesPlaying audio right now
Gold dotPinned tab
Colored dotPart of a Chrome tab group
Pink dashesDuplicates of the same page

You can change how long it takes for a tab to freeze (1 hour to 1 week) in Settings ⚙️.

03Mouse & trackpad

Warp to a tabClick a moon
Dive into a planetClick a planet
Close tabsDrag a moon or planet into the black hole
Move a tab to another windowWindows view: drag the moon onto that window’s planet
Re-file a tab under another topicTopics view: drag the moon onto that topic
Select several tabs⇧ click moons, or ⇧ drag a lasso
Select a whole planet⇧ click the planet
More actionsRight-click a moon, planet or empty space
PanDrag empty space, or scroll with two fingers
ZoomPinch, mouse wheel, or the + / − buttons
Fit everythingDouble-click empty space

04Keyboard

⌘K or /Search tabs & saved sessions. Type > for commands
↑↓ EnterPick a result and warp to it
1234Sites · Topics · Windows · Age
FFit the galaxy to the screen
SOpen the Vault
⌘ASelect all (or all search matches)
⌫Close selected tabs
⌘ZUndo the last close
MSound on / off
+− ←→Zoom and pan
EscClose panels, clear selection, then fit
?Show the in-app flight manual

On Windows and Linux, use Ctrl wherever you see ⌘.

05Cleaning up

The Galaxy Health score (0–100) drops as frozen tabs, duplicates and sheer tab count pile up. Its cards give you one-click fixes:

  • Sweep sends every frozen tab into the black hole. Pinned tabs are protected by default.
  • Merge closes duplicates and keeps the copy you used most recently.
  • Sleep unloads background tabs to free memory. They stay in your tab bar and reload when you click them.
  • Go jumps to whatever is playing audio.

Every close shows an Undo button for a few seconds, and ⌘Z works too. Nothing is ever lost by accident.

Galaxy health panel

06The Vault

The Vault (S, or the box icon at the top right) keeps sessions safe until you need them again.

  • Save a planet, a selection, or all tabs. They stay open.
  • Stash saves and closes them in one go, perfect for clearing the decks.
  • Reopen a session in a new window or the current one, or click a single icon to open just that tab.
  • Click a session’s name to rename it. Export and Import back everything up to a file.
  • ⌘K search covers the Vault too, so a tab you saved weeks ago is one search away.
The Vault drawer

07AI topics

Press 2 for the Topics view. If your Chrome supports its built-in AI (Gemini Nano, Chrome 138+ on desktop), Tab Galaxy asks it to group your tabs by what you’re working on.

  • The model downloads once the first time; a progress bar shows how far along it is.
  • Only tab titles and site names are used, and they never leave your computer.
  • No AI available? A smart keyword engine still finds topics offline.
  • Click Re-sort to regroup, drag a moon to re-file it, or right-click empty space and choose Turn topics into tab groups.
Topics view

08Pro tips

Search, then select

Search for a word, press ⌘A to select every match, then close, group or stash them together.

Morning reset

Switch to Age view and drag the “Ancient” planet into the black hole. Undo if you regret it.

Project sessions

Stash a project’s tabs to the Vault on Friday, reopen them in a fresh window on Monday.

Commands everywhere

Type >sleep, >merge or >stash in the search bar to run actions without the mouse.

Badge colors

The toolbar badge shows your tab count: violet is calm, amber means busy, red means it’s time to clean.

Quiet mode

Press M to mute, or turn on Reduced motion in Settings to skip the warp and big-bang effects.

Privacy

Your tabs stay yours.

No accounts, no analytics, no ads. Your tabs, history and AI processing never leave your computer. The only thing Tab Galaxy ever downloads is a tiny version number from this website, so it can tell you about updates, and you can switch that off.

tabsRead tab titles and addresses to draw your galaxy
tabGroupsCreate Chrome tab groups when you ask it to
storageRemember your settings and Vault, locally
faviconShow each site’s icon on its planet
alarmsCheck for a new version every few hours
FAQ

Questions, answered.

Why do I need Developer mode?

Tab Galaxy isn’t on the Chrome Web Store (yet), and Developer mode is how Chrome lets you install an extension from a folder. It’s a standard Chrome feature. It doesn’t change how Chrome works or make other sites less safe.

Is it safe?

Yes. Tab Galaxy only asks for the permissions listed above, contains no tracking, and sends nothing about you or your tabs anywhere. Its only network request fetches the latest version number from this site. You can check the SHA-256 checksum of the download against the one shown on this page.

How do updates work?

Every few hours Tab Galaxy checks this website for a newer version. When there is one, a glowing Update button appears in the galaxy with what’s new. Click it, download the ZIP, copy its files over your existing TabGalaxy folder, then click Open & reload and Chrome’s Reload button. Tab Galaxy reopens and confirms the update. Chrome doesn’t let extensions installed from a folder replace their own files, so copying the files is the one manual step. You can turn update checks off in Settings.

Does the AI send my tabs anywhere?

No. Topics uses Chrome’s built-in on-device model (Gemini Nano). Tab titles are processed locally and never leave your computer. If your device doesn’t support it, Tab Galaxy uses an offline keyword engine instead.

Why does Topics say AI isn’t available?

Chrome’s built-in AI needs Chrome 138 or newer on Windows, macOS, Linux or ChromeOS, with enough free disk space and a capable device. It isn’t available on mobile. Everything else in Tab Galaxy works without it.

Does it work in Edge, Brave or Arc?

Yes. Any Chromium browser can load it. Use edge://extensions in Edge and brave://extensions in Brave. The AI topics feature is Chrome-only; the keyword engine takes over elsewhere.

I closed tabs by mistake. Can I get them back?

Click Undo on the notification, or press ⌘Z (CtrlZ on Windows) in the galaxy. Chrome’s own ⌘⇧T works too.

Will it slow down my browser?

No. Tab Galaxy only runs while its page is open, and it pauses its animation when you switch away. It stays at 60 fps with hundreds of tabs, and its Sleep feature can actually free up memory.

How do I move it to a new computer?

Install it on the new computer, then use Vault → Export on the old one and Import on the new one to bring your saved sessions along.

Ready to see your galaxy?

Free, private, and about a minute to install.

Download Tab Galaxy