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Browser Extensions · head to head

FireMonkey vs Mautic

FireMonkey logo

FireMonkey

Browser Extensions

User scripts and user styles in one Firefox extension

From
Free
Rated
-
Full reviewWebsite
Mautic logo

Mautic

Marketing

The main open source marketing automation platform, self-hosted and GPL licensed

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.; Mautic mautic depends on reliably scheduled cron jobs to process segments and send campaigns, and a misconfigured or silently failing schedule stops sends without an obvious error, which is the most common way Mautic deployments fail in production.
  • They diverge on capability: FireMonkey covers Scripts and styles together, Mautic covers Visual campaign builder.
  • Prices and features above were last checked on 15 September 2026.

Where they differ

Only the attributes on which FireMonkey and Mautic actually diverge.

Attributes where FireMonkey and Mautic differ
AttributeFireMonkeyMautic
Pricing modelopen-sourceOpen source, no licence fee
PlatformsFirefoxWeb, Linux, Self-hosted, Docker
CategoryBrowser ExtensionsMarketing

Identical on both: starting price (Free), 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 FireMonkey

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

Only in Mautic

  • Visual campaign builder
  • Contact management and segmentation
  • Landing pages and forms
  • Lead scoring
  • Dynamic web content
  • Email builder and A/B testing
  • Self-hosted data control
  • No feature gating

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 Mautic
  • Restyling sites with CSS alongside scripted behaviour changesnot Mautic
  • Editing scripts in a full editor inside the browsernot Mautic
  • Injecting CSS globally across every sitenot Mautic
  • Managing a mixed library of scripts and styles from one dashboardnot Mautic

Mautic

  • A marketing agency running automation for many clients that cannot pass on per-contact SaaS pricing at scalenot FireMonkey
  • A European university or public body whose data protection position requires contact data to stay on infrastructure it controlsnot FireMonkey
  • A company with a list of several hundred thousand contacts where SaaS per-contact pricing has become the largest line in the marketing budgetnot FireMonkey
  • A team that needs to modify the automation logic itself, not just configure it, and wants source access to do sonot 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.

Mautic

  • Mautic depends on reliably scheduled cron jobs to process segments and send campaigns, and a misconfigured or silently failing schedule stops sends without an obvious error, which is the most common way Mautic deployments fail in production.
  • Email sending is not included: you must arrange, pay for and warm up your own sending infrastructure through Amazon SES, SendGrid or similar, and deliverability problems become entirely your problem with no vendor to escalate to.
  • Acquia owns the commercial descendant, Campaign Studio, and is the largest contributor, so the loudest commercial interest in the ecosystem benefits from a hosted product rather than from the self-hosted one being easy.
  • Upgrades between major versions have historically been disruptive, requiring database migrations and plugin compatibility checks, so a neglected instance can become expensive to bring current.
  • The interface and the reporting are noticeably behind commercial platforms, so marketing teams that came from HubSpot or ActiveCampaign will find everyday tasks slower and will need training.

Pricing, plan by plan

FireMonkey

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

Mautic

Free
  • Self-hosted communityFree
    • GPL licensed, no licence fee and no contact limits
    • All features included, no paid edition
    • You provide hosting, database, cron scheduling and email sending
  • Managed Mautic hosting$undefined/month
    • Third-party managed hosting listed by the project
    • Updates, backups and cron scheduling handled for you
    • Pricing varies by provider and is not set by the project

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 Mautic if

  • You need visual campaign builder.
  • You want to start without paying.
  • You work on Web, Linux, Self-hosted, Docker.
  • You also want contact management and segmentation.
Mautic review

Questions people ask

Is FireMonkey or Mautic better?
Neither clearly leads. FireMonkey starts at Free and Mautic at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FireMonkey or Mautic?
FireMonkey starts at Free and Mautic at Free.
Does FireMonkey or Mautic run on more platforms?
FireMonkey runs on Firefox. Mautic runs on Web, Linux, Self-hosted, Docker.
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 Mautic is typically brought in for.
What can FireMonkey do that Mautic cannot?
FireMonkey covers Scripts and styles together, Monaco editor with ESLint, Unlimited client-side storage, Global injection. Mautic covers Visual campaign builder, Contact management and segmentation, Landing pages and forms, Lead scoring.

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
Mautic: Is Mautic free?

Yes, GPL licensed with no licence fee and no contact limits. You pay for hosting, email sending and the staff time to maintain it.

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
Mautic: Does Acquia own Mautic?

Acquia acquired the founding commercial entity in 2019 and sells Campaign Studio built on it, but the Mautic trademark sits with the Open Source Collective and the project is community governed.

FireMonkey: Is FireMonkey open source?

Yes, under the MPL-2.0 licence.

Source
Mautic: What breaks most often?

Cron scheduling. If segment rebuilding and campaign triggers are not running on schedule, campaigns quietly stop sending with no alert.

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
Mautic: Can it handle large contact lists?

Yes, but performance at several hundred thousand contacts depends on database tuning and queue configuration, which is work you must do yourself.

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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