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Browser Extensions · head to head

FireMonkey vs Privacy Badger

FireMonkey logo

FireMonkey

Browser Extensions

User scripts and user styles in one Firefox extension

From
Free
Rated
-
Full reviewWebsite
Privacy Badger logo

Privacy Badger

Browser Extensions

Automatically learn to block invisible trackers

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: FireMonkey firefox only, and requires a recent one: version 93 on desktop, 113 on Android.; Privacy Badger it is not an ad blocker; the project states its aim is to prevent non-consensual tracking rather than to block ads
  • They diverge on capability: FireMonkey covers Scripts and styles together, Privacy Badger covers Automatic tracker detection.
  • Prices and features above were last checked on 15 September 2026.

Where they differ

Only the attributes on which FireMonkey and Privacy Badger actually diverge.

Attributes where FireMonkey and Privacy Badger differ
AttributeFireMonkeyPrivacy Badger
Pricing modelopen-sourcefree
PlatformsFirefoxChrome, Firefox, Edge, Opera
FoundedUnknown1990

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 FireMonkey

  • Scripts and styles together
  • Monaco editor with ESLint
  • Unlimited client-side storage
  • Global injection
  • Notifications and clipboard
  • Firefox for Android

Only in Privacy Badger

  • Automatic tracker detection
  • Learning algorithm
  • Do Not Track support
  • No filter lists required
  • Chrome support
  • Firefox support
  • Edge support
  • Opera support

What people use each for

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

FireMonkey

  • Running user scripts and user styles without two separate extensionsnot Privacy Badger
  • Restyling sites with CSS alongside scripted behaviour changesnot Privacy Badger
  • Editing scripts in a full editor inside the browsernot Privacy Badger
  • Injecting CSS globally across every sitenot Privacy Badger
  • Managing a mixed library of scripts and styles from one dashboardnot Privacy Badger

Privacy Badger

  • Blocking third-party trackers that follow users across websitesnot FireMonkey
  • Sending Do Not Track and Global Privacy Control signalsnot FireMonkey
  • Disabling social media tracking widgets like Facebook Like buttonsnot FireMonkey
  • Preventing canvas fingerprinting across websitesnot FireMonkey

Where each one falls short

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

FireMonkey

  • Firefox only, and requires a recent one: version 93 on desktop, 113 on Android.
  • Not a drop-in replacement for Greasemonkey, Tampermonkey or Stylus. The project says so itself, so an existing library may need adjusting.
  • A much smaller user base than Tampermonkey or Violentmonkey, which means fewer people have hit the bug you are about to hit.
  • No Chrome, Edge or Safari build, so it cannot be the answer for anyone working across browsers.
  • Combining scripts and styles in one extension also combines the blast radius: one extension with permission to inject both into every page.

Privacy Badger

  • It is not an ad blocker; the project states its aim is to prevent non-consensual tracking rather than to block ads
  • There is no Safari build, and Safari on iOS lacks extension capabilities Privacy Badger needs to work
  • Chrome on Android does not support extensions, so Android users have to switch to Firefox or Edge
  • Protection is aimed at third-party trackers and does not comprehensively cover tracking by the site you are actually visiting

Pricing, plan by plan

FireMonkey

Free
  • Open sourceFree
    • MPL-2.0 licensed
    • Unlimited scripts and styles
    • No account required

Privacy Badger

Free
  • FreeFree
    • Automatic tracker learning
    • Third-party blocking
    • Do Not Track

Which should you pick?

Choose FireMonkey if

  • You need scripts and styles together.
  • You want to start without paying.
  • You work on Firefox.
  • You also want monaco editor with eslint.
FireMonkey review

Choose Privacy Badger if

  • You need automatic tracker detection.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Opera.
  • You also want learning algorithm.
Privacy Badger review

Questions people ask

Is FireMonkey or Privacy Badger better?
Neither clearly leads. FireMonkey starts at Free and Privacy Badger at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FireMonkey or Privacy Badger?
FireMonkey starts at Free and Privacy Badger at Free.
Does FireMonkey or Privacy Badger run on more platforms?
FireMonkey runs on Firefox. Privacy Badger runs on Chrome, Firefox, Edge, Opera.
Can I use FireMonkey for free?
Both have a free tier, so you can try either at no cost before committing.
What is FireMonkey best used for?
FireMonkey is most often used for running user scripts and user styles without two separate extensions, restyling sites with css alongside scripted behaviour changes, editing scripts in a full editor inside the browser, injecting css globally across every site. Of those, running user scripts and user styles without two separate extensions and restyling sites with css alongside scripted behaviour changes are not what Privacy Badger is typically brought in for.
What can FireMonkey do that Privacy Badger cannot?
FireMonkey covers Scripts and styles together, Monaco editor with ESLint, Unlimited client-side storage, Global injection. Privacy Badger covers Automatic tracker detection, Learning algorithm, Do Not Track support, No filter lists required.

Answered from the vendors’ own pages

FireMonkey: What makes FireMonkey different from Violentmonkey?

It manages user styles as well as user scripts. The usual arrangement is a script manager plus a separate style manager such as Stylus; FireMonkey replaces both with one extension.

Source
Privacy Badger: How much does Privacy Badger cost?

Privacy Badger is free browser extension made by the Electronic Frontier Foundation. There are no pricing tiers or subscription costs. The project accepts donations to support EFF's work.

Source
FireMonkey: Which browsers does FireMonkey support?

Firefox only. Desktop requires Firefox 93 or later and Android requires 113, with an API minimum of 102.

Source
FireMonkey: Is FireMonkey open source?

Yes, under the MPL-2.0 licence.

Source
FireMonkey: Will my existing Tampermonkey scripts work?

Not necessarily. The project states that while it shares functionality with Greasemonkey, Tampermonkey and Stylus, there are differences, so scripts and styles written for those may need adjusting.

Source
FireMonkey: What editor does FireMonkey use?

Current versions use the Monaco editor with ESLint, the same editor component that powers VS Code.

Source
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