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Browser Extensions · head to head

FireMonkey vs Kubernetes

FireMonkey logo

FireMonkey

Browser Extensions

User scripts and user styles in one Firefox extension

From
Free
Rated
-
Full reviewWebsite
Kubernetes logo

Kubernetes

Technology

Production-grade container orchestration

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.; Kubernetes complex initial setup and configuration with multiple interdependent components
  • They diverge on capability: FireMonkey covers Scripts and styles together, Kubernetes covers Container orchestration.
  • Prices and features above were last checked on 15 September 2026.

Where they differ

Only the attributes on which FireMonkey and Kubernetes actually diverge.

Attributes where FireMonkey and Kubernetes differ
AttributeFireMonkeyKubernetes
Pricing modelopen-sourceUnknown
PlatformsFirefoxLinux, Cloud (AWS, GCP, Azure)
CategoryBrowser ExtensionsTechnology
FoundedUnknown2014

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 Kubernetes

  • Container orchestration
  • Automatic scaling
  • Self-healing
  • Service discovery
  • Load balancing
  • Storage orchestration
  • Automated rollouts
  • Secret management

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

Kubernetes

  • Microservices deploymentnot FireMonkey
  • Cloud-native applicationsnot FireMonkey
  • CI/CD pipelinesnot FireMonkey
  • Multi-cloud deploymentsnot FireMonkey
  • Edge computingnot 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.

Kubernetes

  • Complex initial setup and configuration with multiple interdependent components
  • Significant resource requirements for both hardware infrastructure and specialized human expertise
  • Expensive specialized talent in Kubernetes domain; hiring costs prohibitive for many organizations
  • New security challenges around container isolation and network security requiring robust measures
  • Requires continuous maintenance and updates to stay current with releases and security patches

Pricing, plan by plan

FireMonkey

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

Kubernetes

Free

No published plan breakdown. See the Kubernetes review.

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 Kubernetes if

  • You need container orchestration.
  • You want to start without paying.
  • You work on Linux, Cloud (AWS, GCP, Azure).
  • You also want automatic scaling.
Kubernetes review

Questions people ask

Is FireMonkey or Kubernetes better?
Neither clearly leads. FireMonkey starts at Free and Kubernetes at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, FireMonkey or Kubernetes?
FireMonkey starts at Free and Kubernetes at Free.
Does FireMonkey or Kubernetes run on more platforms?
FireMonkey runs on Firefox. Kubernetes runs on Linux, Cloud (AWS, GCP, Azure).
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 Kubernetes is typically brought in for.
What can FireMonkey do that Kubernetes cannot?
FireMonkey covers Scripts and styles together, Monaco editor with ESLint, Unlimited client-side storage, Global injection. Kubernetes covers Container orchestration, Automatic scaling, Self-healing, Service discovery.

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
Kubernetes: What is Kubernetes used for?

Kubernetes is a container orchestration platform that automates deployment, scaling, and management of containerized applications across clusters of machines.

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
Kubernetes: Is Kubernetes free?

Yes, Kubernetes is free, open-source software maintained by the Cloud Native Computing Foundation. However, running Kubernetes clusters requires infrastructure investment.

Source
FireMonkey: Is FireMonkey open source?

Yes, under the MPL-2.0 licence.

Source
Kubernetes: How hard is it to learn Kubernetes?

Kubernetes has a steep learning curve. It requires deep knowledge of containerization, networking, and distributed systems. Teams without prior container experience should expect significant training time.

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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