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Browser Extensions · head to head

Ghostery vs Mozilla Firefox

Ghostery logo

Ghostery

Browser Extensions

Block ads and stop trackers

From
Free
Rated
-
Full reviewWebsite
Mozilla Firefox logo

Mozilla Firefox

Technology

An independent web browser with its own rendering engine, funded almost entirely by search placement deals.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Ghostery database of trackers requires regular updates to remain current; Mozilla Firefox roughly 85 per cent of Mozilla's revenue comes from search default placement deals, overwhelmingly with Google, so the organisation that competes with Chrome depends on Chrome's owner for its funding and any renegotiation lands on Firefox's engineering budget within a quarter.
  • They diverge on capability: Ghostery covers Tracker blocking, Mozilla Firefox covers Gecko engine.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Ghostery and Mozilla Firefox actually diverge.

Attributes where Ghostery and Mozilla Firefox differ
AttributeGhosteryMozilla Firefox
PlatformsFirefox, Chrome, Edge, Safari, OperaWindows, macOS, Linux, iOS, Android
CategoryBrowser ExtensionsTechnology
Founded20092004

Identical on both: starting price (Free), pricing model (Unknown), free tier (Yes), user rating (Not yet rated).

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 Ghostery

  • Tracker blocking
  • Ad blocking
  • Privacy dashboard
  • Enhanced anti-tracking
  • Chrome support
  • Firefox support
  • Edge support
  • Safari support

Only in Mozilla Firefox

  • Gecko engine
  • Full webRequest blocking
  • Total Cookie Protection
  • Container tabs
  • Extended Support Release
  • policies.json and ADMX
  • Built-in developer tools
  • Firefox Sync

What people use each for

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

Ghostery

  • Blocking ads and sponsored content before they loadnot Mozilla Firefox
  • Preventing tracker profiling by replacing identifying data with random valuesnot Mozilla Firefox
  • Automatically rejecting non-essential cookie consentnot Mozilla Firefox
  • Seeing which companies track a given site through WhoTracks.Menot Mozilla Firefox

Mozilla Firefox

  • Web development where you need to test against a non-Chromium engine before shipping, because Chromium-only testing hides real bugsnot Ghostery
  • Users who require a full-strength content blocker, which Chrome's Manifest V3 no longer permitsnot Ghostery
  • Managed fleets that need a browser on a slow release cadence with Group Policy control, using the ESR channelnot Ghostery
  • Handling several accounts on the same service at once through container tabs, without separate profiles or private windowsnot Ghostery

Where each one falls short

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

Ghostery

  • Database of trackers requires regular updates to remain current
  • Some sites break functionality when trackers are aggressively blocked

Mozilla Firefox

  • Roughly 85 per cent of Mozilla's revenue comes from search default placement deals, overwhelmingly with Google, so the organisation that competes with Chrome depends on Chrome's owner for its funding and any renegotiation lands on Firefox's engineering budget within a quarter.
  • Desktop market share sits at a few per cent, so commercial sites are tested against Chrome and Safari and a Firefox-only rendering or WebRTC bug is triaged as low priority by the site owner, leaving you with the workaround.
  • On iOS and iPadOS the browser is a WebKit shell required by Apple's rules, so it delivers the interface and Sync but none of the engine, extension or tracking-protection behaviour that make Firefox worth choosing on desktop.
  • Mozilla declines to implement several hardware-facing APIs on principle, including WebUSB, WebSerial, Web Bluetooth and WebHID, so a web application that talks to a device simply does not run and no configuration flag changes that.
  • Enterprise management is limited to policies.json and ADMX templates; there is no first-party equivalent of Chrome Browser Cloud Management, so fleet-wide reporting on versions and extensions requires third-party tooling you have to buy or build.
  • Mozilla repeatedly ships decisions its own user base objects to, such as enabling Privacy Preserving Attribution by default and the 2025 Terms of Use rewrite, and reversals arrive after the news cycle, so deploying it on a privacy argument means owning the communications work each time.

Pricing, plan by plan

Ghostery

Free

No published plan breakdown. See the Ghostery review.

Mozilla Firefox

Free

No published plan breakdown. See the Mozilla Firefox review.

Which should you pick?

Choose Ghostery if

  • You need tracker blocking.
  • You want to start without paying.
  • You work on Firefox, Chrome, Edge, Safari, Opera.
  • You also want ad blocking.
Ghostery review

Choose Mozilla Firefox if

  • You need gecko engine.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, iOS, Android.
  • You also want full webrequest blocking.
Mozilla Firefox review

Questions people ask

Is Ghostery or Mozilla Firefox better?
Neither clearly leads. Ghostery starts at Free and Mozilla Firefox at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Ghostery or Mozilla Firefox?
Ghostery starts at Free and Mozilla Firefox at Free.
Does Ghostery or Mozilla Firefox run on more platforms?
Ghostery runs on Firefox, Chrome, Edge, Safari, Opera. Mozilla Firefox runs on Windows, macOS, Linux, iOS, Android.
Can I use Ghostery for free?
Both have a free tier, so you can try either at no cost before committing.
What is Ghostery best used for?
Ghostery is most often used for blocking ads and sponsored content before they load, preventing tracker profiling by replacing identifying data with random values, automatically rejecting non-essential cookie consent, seeing which companies track a given site through whotracks.me. Of those, blocking ads and sponsored content before they load and preventing tracker profiling by replacing identifying data with random values are not what Mozilla Firefox is typically brought in for.
What can Ghostery do that Mozilla Firefox cannot?
Ghostery covers Tracker blocking, Ad blocking, Privacy dashboard, Enhanced anti-tracking. Mozilla Firefox covers Gecko engine, Full webRequest blocking, Total Cookie Protection, Container tabs.

Answered from the vendors’ own pages

Ghostery: Is Ghostery completely free?

Yes. Ghostery is a free ad blocking browser extension that you can install without paying a subscription. All of Ghostery's features are completely free to use, including ad blocking, tracker blocking, and cookie consent banner handling.

Source
Mozilla Firefox: Does uBlock Origin still work on Firefox?

Yes. Firefox has kept the blocking webRequest API that Chrome removed with Manifest V3, so uBlock Origin runs with its full rule set rather than the cut-down Lite version Chrome requires.

Ghostery: What browsers does Ghostery support?

Ghostery is available for Firefox, Chrome, Opera, Edge and Safari as a browser extension.

Source
Mozilla Firefox: Is Firefox on iPhone the same browser?

No. Apple's platform rules require it to use WebKit, so on iOS and iPadOS you get Firefox's interface, Sync and bookmarks on top of Safari's engine. The privacy and extension behaviour are not the same.

Ghostery: What data does Ghostery collect?

Ghostery collects no personal information, ensuring your privacy remains protected while using the extension.

Source
Mozilla Firefox: How is Mozilla funded, and does that matter?

Mainly by payments for making a search engine the default, with Google as the dominant payer. It matters because it is a single-source dependency on a direct competitor, and it has been the subject of antitrust litigation whose outcome Mozilla does not control.

Mozilla Firefox: Can I manage it across a company fleet?

Yes, through policies.json or Windows Group Policy with the ADMX templates, and the ESR channel gives you a roughly yearly major version instead of four-weekly. There is no first-party cloud management console, so reporting needs other tooling.

Mozilla Firefox: Will every site work in it?

Most will. The exceptions cluster around sites tested only in Chrome, legacy enterprise applications, and anything using WebUSB, WebSerial, Web Bluetooth or WebHID, which Firefox does not implement at all.

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