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Browser Extensions · head to head

Greasemonkey vs Kubernetes

Greasemonkey logo

Greasemonkey

Browser Extensions

The original userscript manager, for Firefox

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: Greasemonkey firefox only. There is no Chrome, Edge or Safari build and there never has been.; Kubernetes complex initial setup and configuration with multiple interdependent components
  • They diverge on capability: Greasemonkey covers Userscript execution, Kubernetes covers Container orchestration.
  • Prices and features above were last checked on 17 September 2026.

Where they differ

Only the attributes on which Greasemonkey and Kubernetes actually diverge.

Attributes where Greasemonkey and Kubernetes differ
AttributeGreasemonkeyKubernetes
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 Greasemonkey

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

Greasemonkey

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

Kubernetes

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

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

Greasemonkey

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

Kubernetes

Free

No published plan breakdown. See the Kubernetes review.

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 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 Greasemonkey or Kubernetes better?
Neither clearly leads. Greasemonkey 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, Greasemonkey or Kubernetes?
Greasemonkey starts at Free and Kubernetes at Free.
Does Greasemonkey or Kubernetes run on more platforms?
Greasemonkey runs on Firefox. Kubernetes runs on Linux, Cloud (AWS, GCP, Azure).
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 Kubernetes is typically brought in for.
What can Greasemonkey do that Kubernetes cannot?
Greasemonkey covers Userscript execution, Built-in script editor, GM. API, @resource support. Kubernetes covers Container orchestration, Automatic scaling, Self-healing, Service discovery.

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
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
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
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
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
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
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
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
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