TabNest

About

Your browser is not a filing cabinet. TabNest makes it one.

Most tab suspenders do one thing: freeze tabs you aren't using to reclaim RAM. TabNest does that too, but it solves the real problem. When you come back to a suspended tab two days later and see "google.com/search?q=…", you have no idea why you had it open. TabNest lets you attach a sticky note to any tab before it sleeps, so when it wakes up, you see exactly why it was there.

What TabNest Does

Automatic suspension
TabNest runs silently in the background and suspends any tab that has been inactive for 30 minutes (configurable). When a tab is suspended, it is replaced by a lightweight placeholder page that shows the original site's favicon, title, hostname, your note, and a single "Restore tab" button. No content is discarded, clicking Restore returns you to the original URL instantly.

Memory you can feel
Each suspended tab saves roughly 50 MB of RAM. The TabNest popup shows you a live estimate of how much memory you have freed, updated every time you open it.

Sticky notes for tabs
Click the Note button on any tab row in the popup and type a reminder: "read before Monday meeting", "check pricing", "follow up with Alex". The note appears inline under the tab's URL in the popup, and is displayed prominently on the suspended page itself, so it is the first thing you see when you return.

Suspend anything, instantly
- Suspend all — one click suspends every eligible idle tab in the current window at once.
- Suspend individual tabs — a Suspend button on each idle tab row in the popup.
- Automatic suspension — the background service worker checks every minute and suspends tabs that have been inactive for longer than your configured timeout.

Full control over what never suspends
Pin a tab to exempt it permanently. Add domains to the whitelist (mail.google.com, notion.so, and linear.app are whitelisted by default) and they will never be suspended. Turn auto-suspension off entirely with a single toggle in Settings, all your other preferences are preserved.

Keyboard shortcut
Press 'Alt+Shift+T' (Windows, Linux) and on Mac 'option+Shift+T' to open the TabNest popup from anywhere without touching the mouse. The shortcut can be remapped at chrome://extensions/shortcuts.