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Browser Extensions · head to head

Greasemonkey vs HTTPS Everywhere

Greasemonkey logo

Greasemonkey

Browser Extensions

The original userscript manager, for Firefox

From
Free
Rated
-
Full reviewWebsite
HTTPS Everywhere logo

HTTPS Everywhere

Browser Extensions

Encrypt the web automatically

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.; HTTPS Everywhere product discontinued as of January 2023
  • They diverge on capability: Greasemonkey covers Userscript execution, HTTPS Everywhere covers Automatic HTTPS.
  • Prices and features above were last checked on 15 September 2026.

Where they differ

Only the attributes on which Greasemonkey and HTTPS Everywhere actually diverge.

Attributes where Greasemonkey and HTTPS Everywhere differ
AttributeGreasemonkeyHTTPS Everywhere
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 Greasemonkey

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

Only in HTTPS Everywhere

  • Automatic HTTPS
  • Encryption enforcement
  • Rule-based upgrading
  • Observatory integration
  • Chrome support
  • Firefox support
  • Edge support
  • Opera support

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 HTTPS Everywhere
  • Automating a repetitive action on a web applicationnot HTTPS Everywhere
  • Adding a missing feature to a site you do not controlnot HTTPS Everywhere
  • Running userscripts on Firefox for Androidnot HTTPS Everywhere
  • Writing and testing your own scripts in the browsernot HTTPS Everywhere

HTTPS Everywhere

  • Forcing encrypted HTTPS connections on websites that support itnot Greasemonkey
  • Preventing eavesdropping and content hijacking on unsecured networksnot 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.

HTTPS Everywhere

  • Product discontinued as of January 2023
  • Functionality now built into all modern browsers natively
  • No longer receives security updates or maintenance

Pricing, plan by plan

Greasemonkey

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

HTTPS Everywhere

Free
  • FreeFree
    • Automatic HTTPS upgrade
    • Rule sets
    • Custom rules

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 HTTPS Everywhere if

  • You need automatic https.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Opera.
  • You also want encryption enforcement.
HTTPS Everywhere review

Questions people ask

Is Greasemonkey or HTTPS Everywhere better?
Neither clearly leads. Greasemonkey starts at Free and HTTPS Everywhere at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Greasemonkey or HTTPS Everywhere?
Greasemonkey starts at Free and HTTPS Everywhere at Free.
Does Greasemonkey or HTTPS Everywhere run on more platforms?
Greasemonkey runs on Firefox. HTTPS Everywhere runs on Chrome, Firefox, Edge, Opera.
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 HTTPS Everywhere is typically brought in for.
What can Greasemonkey do that HTTPS Everywhere cannot?
Greasemonkey covers Userscript execution, Built-in script editor, GM. API, @resource support. HTTPS Everywhere covers Automatic HTTPS, Encryption enforcement, Rule-based upgrading, Observatory integration.

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
HTTPS Everywhere: Is HTTPS Everywhere still maintained?

No. HTTPS Everywhere was retired in January 2023 because major browsers added native HTTPS upgrade features, making the extension obsolete.

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
HTTPS Everywhere: What functionality did HTTPS Everywhere provide?

The extension automatically redirected HTTP connections to HTTPS when available, improving encryption and privacy on unencrypted websites.

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
HTTPS Everywhere: What is the recommended replacement?

Modern browsers including Chrome, Firefox, Edge, and Safari now include built-in HTTPS upgrade features that automatically redirect to secure connections, making HTTPS Everywhere unnecessary.

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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