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Browser Extensions · head to head

Greasemonkey vs Pocket

Greasemonkey logo

Greasemonkey

Browser Extensions

The original userscript manager, for Firefox

From
Free
Rated
-
Full reviewWebsite
Pocket logo

Pocket

Browser Extensions

Save articles and videos for later

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Greasemonkey firefox only. There is no Chrome, Edge or Safari build and there never has been.; Pocket no note-taking feature despite competitor Instapaper offering this
  • They diverge on capability: Greasemonkey covers Userscript execution, Pocket covers Save for later.
  • Prices and features above were last checked on 15 September 2026.

Where they differ

Only the attributes on which Greasemonkey and Pocket actually diverge.

Attributes where Greasemonkey and Pocket differ
AttributeGreasemonkeyPocket
Pricing modelopen-sourceUnknown
PlatformsFirefoxWeb, iOS, Android, Chrome, Firefox, Safari
FoundedUnknown2007

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Browser Extensions).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Greasemonkey

  • Userscript execution
  • Built-in script editor
  • GM. API
  • @resource support
  • Script localisation
  • Firefox for Android

Only in Pocket

  • Save for later
  • Offline reading
  • Clean reading view
  • Tagging
  • Chrome support
  • Firefox support
  • Edge support
  • Safari support

What people use each for

The jobs each tool is most often brought in to do.

Greasemonkey

  • Restyling or de-cluttering a site you use dailynot Pocket
  • Automating a repetitive action on a web applicationnot Pocket
  • Adding a missing feature to a site you do not controlnot Pocket
  • Running userscripts on Firefox for Androidnot Pocket
  • Writing and testing your own scripts in the browsernot Pocket

Pocket

  • Saving articles from across the web to read later on any devicenot Greasemonkey
  • Discovering curated articles and stories through algorithmic recommendationsnot Greasemonkey
  • Managing personal reading lists and organizing saved content by topicsnot Greasemonkey

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Greasemonkey

  • Firefox only. There is no Chrome, Edge or Safari build and there never has been.
  • Its API diverged from the Tampermonkey conventions most shared scripts are written against, so a script from a sharing site may need adjusting to run.
  • The dashboard is plainer than Tampermonkey's, with no diff view when a script updates itself.
  • No cloud sync of the kind Tampermonkey and Violentmonkey offer; moving machines means exporting.
  • A userscript manager can read and rewrite every page you visit, so the security of the arrangement depends entirely on the scripts you choose to install.

Pocket

  • No note-taking feature despite competitor Instapaper offering this
  • Full-text search of saved articles limited to premium tier ($4.99/month)
  • Highlights feature was unreliable and often failed to work properly with large libraries
  • Images, particularly infographics and data-heavy charts, frequently failed to display properly in the reading view
  • Limited sharing capabilities with non-Pocket users

Pricing, plan by plan

Greasemonkey

Free
  • Open sourceFree
    • Unlimited scripts
    • Built-in editor
    • No account required

Pocket

Free
  • Premium$4.99/month
    • Permanent library backup
    • Full-text search
    • AI-suggested tags
  • Premium Annual$45/year
    • Permanent library backup
    • Full-text search
    • AI-suggested tags

Which should you pick?

Choose Greasemonkey if

  • You need userscript execution.
  • You want to start without paying.
  • You work on Firefox.
  • You also want built-in script editor.
Greasemonkey review

Choose Pocket if

  • You need save for later.
  • You want to start without paying.
  • You work on Web, iOS, Android, Chrome, Firefox, Safari.
  • You also want offline reading.
Pocket review

Questions people ask

Is Greasemonkey or Pocket better?
Neither clearly leads. Greasemonkey starts at Free and Pocket at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Greasemonkey or Pocket?
Greasemonkey starts at Free and Pocket at Free.
Does Greasemonkey or Pocket run on more platforms?
Greasemonkey runs on Firefox. Pocket runs on Web, iOS, Android, Chrome, Firefox, Safari.
Can I use Greasemonkey for free?
Both have a free tier, so you can try either at no cost before committing.
What is Greasemonkey best used for?
Greasemonkey is most often used for restyling or de-cluttering a site you use daily, automating a repetitive action on a web application, adding a missing feature to a site you do not control, running userscripts on firefox for android. Of those, restyling or de-cluttering a site you use daily and automating a repetitive action on a web application are not what Pocket is typically brought in for.
What can Greasemonkey do that Pocket cannot?
Greasemonkey covers Userscript execution, Built-in script editor, GM. API, @resource support. Pocket covers Save for later, Offline reading, Clean reading view, Tagging.

Answered from the vendors’ own pages

Greasemonkey: Is Greasemonkey still maintained?

Yes. Version 4.14 was released on 2 June 2026, and the project has an active repository, bug tracker and discussion groups.

Source
Pocket: Does Pocket work offline?

Yes. Pocket syncs articles to your device for offline reading access on phones, tablets, and computers.

Source
Greasemonkey: Does Greasemonkey work on Chrome?

No. It is a Firefox extension and has never shipped for Chrome. Violentmonkey and Tampermonkey are the equivalents there.

Source
Pocket: Is Pocket free to use?

Pocket was free with unlimited article saves, offline reading, and basic tagging. Premium was $4.99/month or $45/year, adding features like permanent library backup, full-text search, and AI-suggested tags.

Source
Greasemonkey: Will Tampermonkey scripts run in Greasemonkey?

Often, but not always. Greasemonkey's API diverged from the conventions most shared scripts are written against, so a script may need its header or its GM calls adjusted.

Source
Pocket: How do I export my saved articles?

Users could export data via CSV file by visiting getpocket.com/export before the October 8, 2025 deadline. The export includes links and metadata but not full article text or offline cached content.

Source
Greasemonkey: Does Greasemonkey run on mobile?

On Firefox for Android, from version 4.12. There is no iOS build, because Firefox on iOS cannot load extensions of this kind.

Source
Pocket: Can I take notes while reading articles in Pocket?

Pocket did not have a native note-taking feature. Premium subscribers could highlight and annotate articles, but text notes were not supported, unlike competitor Instapaper.

Source
Greasemonkey: What is the GM API?

The set of functions a userscript manager exposes to scripts, named after Greasemonkey, which defined it. Greasemonkey supports the promise-based GM. form including GM.xmlHttpRequest and GM.registerMenuCommand.

Source
Pocket: Does Pocket sync across my devices?

Yes. Saved articles, tags, and reading progress synced automatically across iOS, Android, Web, and browser extensions.

Source
Pocket: What happened to Pocket?

Mozilla shut down Pocket on July 8, 2025, as part of a strategic shift to focus resources on Firefox. Users could export data until October 8, 2025, after which all saved data was permanently deleted.

Source
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