Alternative tab manager browser addon

Grasshopper promo image
What is Grasshopper?

Grasshopper is a Firefox add-on by mp. This add-on has 72 daily active users and a good user rating of 4.67. The latest version, 315, was updated 10 days ago.

Stats date:
By: mp
Users: 72 ▼ -1
Rating: 4.67 (3)
Version: 315 (Last updated: 2023-01-24)
Creation date: 2022-08-18
Weekly download count: 2
Firefox on Android: No
Manifest version: 2
  • tabs
  • sessions
  • history
  • bookmarks
Featured: No
Size: 5.20M
Risk impact: Moderate risk impact
Risk likelihood: Moderate risk likelihood
Found a bug?

Other platforms

Not available on Chrome
Not available on Edge
News: Sidebar mode is now enabled.

This is meant to complement or maybe even replace the tab bar.
Good for tab hoarders, vertical tab enjoyers.
Or just users looking for an alternative tab manager.

Shows a list of open tabs.
Tabs update in real time.
Filter tabs by typing.
Pin tabs.
Close tabs.
Show pins or playing tabs.
Filter by title or URL.
Re-open recently closed tabs.
Show tab titles or urls.
See more
Risk impact

Grasshopper requires some risky permissions and may not be safe to use. Exercise caution when installing this add-on. Review carefully before installing.

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypass your security settings, and access your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Risk likelihood

Grasshopper is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on, especially ones with higher risk impact and/or higher risk likelihood.

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User reviews
by Hollytryx, 2022-12-24
View all user reviews

The manifest file declares the requirements and permissions that a Firefox add-on will have access to. By reviewing the manifest, you may be able to determine if a Firefox add-on is over-reaching (for example, if an extension is overriding your new tab page, or search provider, or requesting access to your web activities without any good reason).

  "manifest_version": 2,
  "name": "Grasshopper",
  "version": "315",
  "description": "Awesome Tab Manager",
  "permissions": [
  "icons": {
    "128": "img/icon128.png"
  "browser_action": {