• 🗂️ Collections — group bookmarks, drop open tabs straight into one, color and pin them, switch a collection between a tile grid and a dense list.
• 🧩 Widget board — drag widgets around a real grid. Leave gaps, resize, span rows, swap anything with anything.
• 🗂️ Bookmarks from your browser — pull your existing Firefox or Chrome bookmarks in, and sync them to a collection whenever you want.
• 🗃️ Workspaces & boards — separate setups per work/personal, several boards inside each, one keystroke to switch.
• 💾 Sessions — save the current window or every window at once, restore into this window or a fresh one, and turn any session into a bookmark collection.
• 🪦 Trash — delete things with a safety net. Empty it when you're ready.
• 🧹 Unload tabs — strip memory-heavy tabs down to their favicon without losing where they were.
• 🧭 Command palette — Ctrl/⌘ K to jump to a bookmark, a tab, or any command.
• ⌨️ Address bar — type tb then anything to search your bookmarks, tabs, and sessions without leaving the URL bar.
• 🖱️ Right-click menu — add the page, a link, or a selection to TabsBoard.
• 🎨 187 themes — every Monkeytype palette, plus a builder for your own.
• 🌍 Weather, RSS, downloads, history, most-visited, CPU as widgets.
• 💾 Yours, locally — everything lives in browser storage. No account, no server, no analytics.

Collection Notes To-Do Clock Search Countdown Pomodoro Timer Stopwatch Weather RSS Most visited Downloads History CPU

⚡ The CPU widget needs the system.cpu API, which is Chrome/ChromeOS only. On Firefox the widget is still there — it just tells you why it can't read anything instead of showing a dead gauge.

187 presets, ported straight from Monkeytype's theme set, plus a builder for your own. The builder edits the eight colors this app actually paints from — background, panels, text, muted text, accent, caret, and the two error colors — and repaints the page live as you drag the pickers or type hex values. A contrast readout tells you when the text won't survive the background. Saved themes live beside the presets, so they show up in the grid, in the Auto light/dark slots, and in the command palette, and they ride along with your JSON export.

Three more live in the browser's own shortcut settings (chrome://extensions/shortcuts, or the Firefox add-on shortcuts page):

1. Clone this repo (or download it)
2. chrome://extensions → turn on Developer mode
3. Load unpacked → pick dist/chrome/

Install it from AMO: addons.mozilla.org/firefox/addon/tabsboard — click Add to Firefox. That install is signed by Mozilla, survives restarts, and updates on its own.

Or build it yourself and load the folder directly:

1. about:debugging#/runtime/this-firefox
2. Load Temporary Add-on… → pick dist/firefox/manifest.json

Temporary installs disappear when you close Firefox, and Firefox won't serve an unsigned .xpi as a permanent install. If you want your own build to stick around, push it through addons.mozilla.org as an unlisted add-on, or sign it yourself with web-ext:

web-ext sign --api-key "$AMO_KEY" --api-secret "$AMO_SECRET" \
  --source-dir dist/firefox

src/ is the source of truth. dist/ and the packed .xpi are generated and gitignored, so run these before either install step.

# Chrome (MV3)
rm -rf dist/chrome && mkdir -p dist/chrome
cp -r src/. dist/chrome/
rm dist/chrome/manifest.firefox.json dist/chrome/manifest.chrome.json dist/chrome/background/background.html
cp src/manifest.chrome.json dist/chrome/manifest.json

# Firefox (MV2)
rm -rf dist/firefox && mkdir -p dist/firefox
cp -r src/. dist/firefox/
rm dist/firefox/manifest.firefox.json dist/firefox/manifest.chrome.json
cp src/manifest.firefox.json dist/firefox/manifest.json

# Pack the Firefox build (version comes from the manifest)
cd dist/firefox && zip -r -X "../../TabsBoard-$(node -p "require('./manifest.json').version")-fx.xpi" . -x '.*'

Bump the version in both manifests, not just one.

src/
  manifest.chrome.json    MV3 manifest
  manifest.firefox.json   MV2 manifest
  background/             service worker / background page
  common/                 storage, themes, icons, search, color utils
  newtab/                 the dashboard UI
dist/                     generated builds

Data is versioned with a single SCHEMA_VERSION (currently 1). There is no migration ladder: if the stored data doesn't match, TabsBoard starts fresh rather than trying to repair it.

• Monkeytype — the whole color palette. Every theme here is Monkeytype's hex values, copied verbatim, nothing recolored. Monkeytype is GPL-3.0; hex color codes aren't copyrightable expression, but the credit is theirs and it's here. 🐵
• Lucide — every icon in the app. ISC. ✨
• Open-Meteo — weather data and city search. CC BY 4.0, attribution appreciated. 🌤️

Everything else was written here. If you spot code that looks like it came from somewhere else, that's a bug — please open an issue so I can credit it or rip it out.

MIT — see LICENSE. Fork it, ship it, sell it, whatever.

Open an issue. Include your browser, your OS, and what you did just before it broke. Screenshots are lovely.