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Cybersecurity · head to head

Bitwarden vs Greasemonkey

Bitwarden logo

Bitwarden

Cybersecurity

Open source password management for everyone

From
Free
Rated
-
Full reviewWebsite
Greasemonkey logo

Greasemonkey

Browser Extensions

The original userscript manager, for Firefox

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Bitwarden the integrated TOTP authenticator, encrypted file attachments, vault health reports and Emergency Access are all withheld from the free plan and need Premium at $1.65 per month; Greasemonkey firefox only. There is no Chrome, Edge or Safari build and there never has been.
  • They diverge on capability: Bitwarden covers Unlimited password storage, Greasemonkey covers Userscript execution.
  • Prices and features above were last checked on 17 September 2026.

Where they differ

Only the attributes on which Bitwarden and Greasemonkey actually diverge.

Attributes where Bitwarden and Greasemonkey differ
AttributeBitwardenGreasemonkey
Pricing modelfreemiumopen-source
PlatformsWindows, Macos, Linux, Ios, Android, Web, CliFirefox
CategoryCybersecurityBrowser Extensions
Founded2016Unknown

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 Bitwarden

  • Unlimited password storage
  • Cross-platform sync
  • Secure password sharing
  • Password generator
  • Two-factor authentication
  • Encrypted file attachments
  • Vault health reports
  • Emergency access

Only in Greasemonkey

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

What people use each for

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

Bitwarden

  • Personal password managementnot Greasemonkey
  • Team credential sharingnot Greasemonkey
  • Enterprise securitynot Greasemonkey
  • Compliance requirementsnot Greasemonkey
  • Developer secrets managementnot Greasemonkey

Greasemonkey

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

Where each one falls short

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

Bitwarden

  • The integrated TOTP authenticator, encrypted file attachments, vault health reports and Emergency Access are all withheld from the free plan and need Premium at $1.65 per month
  • Free accounts can share vault items with one other Bitwarden user and no more
  • File storage is capped at 5 GB on Premium and 5 GB personal plus 5 GB family on the Families plan
  • Two-step login accepts up to 10 hardware security keys per account
  • The Families plan is capped at 6 people, so a seventh member means moving to a Teams subscription at $4 per user per month

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.

Pricing, plan by plan

Bitwarden

Free
  • FreeFree
    • Basic password management
    • Zero-knowledge encryption
    • Advanced two-step login
  • Premium$1.65/month
    • Integrated authenticator
    • File attachments
    • Emergency access
  • Premium$19.8/year
  • Families$3.99/month
    • Up to 6 premium accounts
    • Unlimited sharing and collections
    • Organization storage included

Greasemonkey

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

Which should you pick?

Choose Bitwarden if

  • You need unlimited password storage.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android, Web, Cli.
  • You also want cross-platform sync.
Bitwarden review

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

Questions people ask

Is Bitwarden or Greasemonkey better?
Neither clearly leads. Bitwarden starts at Free and Greasemonkey at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bitwarden or Greasemonkey?
Bitwarden starts at Free and Greasemonkey at Free.
Does Bitwarden or Greasemonkey run on more platforms?
Bitwarden runs on Windows, Macos, Linux, Ios, Android, Web, Cli. Greasemonkey runs on Firefox.
Can I use Bitwarden for free?
Both have a free tier, so you can try either at no cost before committing.
What is Bitwarden best used for?
Bitwarden is most often used for personal password management, team credential sharing, enterprise security, compliance requirements. Of those, personal password management and team credential sharing are not what Greasemonkey is typically brought in for.
What can Bitwarden do that Greasemonkey cannot?
Bitwarden covers Unlimited password storage, Cross-platform sync, Secure password sharing, Password generator. Greasemonkey covers Userscript execution, Built-in script editor, GM. API, @resource support.

Answered from the vendors’ own pages

Bitwarden: Does Bitwarden have a free plan?

Yes, Bitwarden offers a free tier with basic password management, zero-knowledge encryption, advanced two-step login, and unlimited devices across browser, mobile, and desktop apps.

Source
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
Bitwarden: How much does Bitwarden Premium cost?

Bitwarden Premium costs $1.65 per month billed annually at $19.80 per year, including integrated authenticator, file attachments, emergency access, and security reports.

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
Bitwarden: What is the difference between Bitwarden Teams and Enterprise?

Teams plan at $4 per user per month (annual billing) includes centralized ownership and secure credential sharing. Enterprise at $6 per user per month adds granular access control, passwordless SSO, account recovery, self-hosting, and complimentary Families plans for all users.

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
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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