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Browser Extensions · head to head

Redux DevTools vs Violentmonkey

Redux DevTools logo

Redux DevTools

Browser Extensions

Debug Redux state changes in your browser

From
Free
Rated
-
Full reviewWebsite
Violentmonkey logo

Violentmonkey

Browser Extensions

Open source userscript manager

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Redux DevTools significant performance overhead when tracking large state trees with many action history entries; Violentmonkey smaller script ecosystem compared to Tampermonkey which has larger user base and more available scripts
  • They diverge on capability: Redux DevTools covers Action history, Violentmonkey covers Userscript support.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Redux DevTools and Violentmonkey actually diverge.

Attributes where Redux DevTools and Violentmonkey differ
AttributeRedux DevToolsViolentmonkey
Pricing modelopen-sourceUnknown
PlatformsChrome, Firefox, Edge, ElectronChrome, Firefox, Edge
Founded20152013

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 Redux DevTools

  • Action history
  • State diff
  • Time-travel debugging
  • State export

Only in Violentmonkey

  • Userscript support
  • Clean interface
  • Cloud sync
  • Script editor
  • Opera support

Both cover

  • Chrome support
  • Firefox support
  • Edge support

What people use each for

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

Redux DevTools

  • Redux development and debugging tool for JavaScript applicationsnot Violentmonkey
  • Action replay and time-travel debugging for state managementnot Violentmonkey

Violentmonkey

  • Run open-source userscripts to customize or automate web pagesnot Redux DevTools
  • Import scripts compatible with Greasemonkey and Tampermonkey formatsnot Redux DevTools
  • Sync scripts and settings across browsers via Dropbox, OneDrive, Google Drive, or WebDAVnot Redux DevTools
  • Batch import/export scripts as zip filesnot Redux DevTools

Where each one falls short

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

Redux DevTools

  • Significant performance overhead when tracking large state trees with many action history entries
  • Memory consumption increases with action history, especially with large datasets of 11,000+ records
  • UI becomes sluggish when LogMonitor contains many actions in history
  • Requires manual configuration of maxAge and sanitizers to optimize performance

Violentmonkey

  • Smaller script ecosystem compared to Tampermonkey which has larger user base and more available scripts
  • Less marketing and visibility results in lower adoption compared to more widely-known alternatives
  • Community maintenance model means slower feature development compared to commercial alternatives

Pricing, plan by plan

Redux DevTools

Free

No published plan breakdown. See the Redux DevTools review.

Violentmonkey

Free

No published plan breakdown. See the Violentmonkey review.

Which should you pick?

Choose Redux DevTools if

  • You need action history.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge, Electron.
  • You also want state diff.
Redux DevTools review

Choose Violentmonkey if

  • You need userscript support.
  • You want to start without paying.
  • You work on Chrome, Firefox, Edge.
  • You also want clean interface.
Violentmonkey review

Questions people ask

Is Redux DevTools or Violentmonkey better?
Neither clearly leads. Redux DevTools starts at Free and Violentmonkey at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Redux DevTools or Violentmonkey?
Redux DevTools starts at Free and Violentmonkey at Free.
Does Redux DevTools or Violentmonkey run on more platforms?
Redux DevTools runs on Chrome, Firefox, Edge, Electron. Violentmonkey runs on Chrome, Firefox, Edge.
Can I use Redux DevTools for free?
Both have a free tier, so you can try either at no cost before committing.
What is Redux DevTools best used for?
Redux DevTools is most often used for redux development and debugging tool for javascript applications, action replay and time-travel debugging for state management. Of those, redux development and debugging tool for javascript applications and action replay and time-travel debugging for state management are not what Violentmonkey is typically brought in for.
What can Redux DevTools do that Violentmonkey cannot?
Redux DevTools covers Action history, State diff, Time-travel debugging, State export. Violentmonkey covers Userscript support, Clean interface, Cloud sync, Script editor. Both handle Chrome support, Firefox support, Edge support.

Answered from the vendors’ own pages

Redux DevTools: Is Redux DevTools free?

Yes, Redux DevTools is completely free and open-source under the MIT license. It is available as a browser extension for Chrome, Firefox, and Edge, and can also be used as a standalone app or React component.

Source
Violentmonkey: Is Violentmonkey open-source?

Yes. Violentmonkey is fully open-source and available on GitHub, making it free to use and community-maintained unlike Tampermonkey which has a larger proprietary ecosystem.

Source
Redux DevTools: What browsers does Redux DevTools support?

Redux DevTools is available as a browser extension for Chrome, Firefox, and Edge. It can also be integrated directly into applications as a React component or standalone app.

Source
Violentmonkey: What browsers does Violentmonkey support?

Violentmonkey works on browsers with WebExtensions support, including Chrome, Firefox, Edge, and other Chromium-based browsers.

Source
Redux DevTools: Does Redux DevTools work with production builds?

Redux DevTools is designed for development and should be disabled in production builds. Keeping it enabled in production can impact application performance due to state logging overhead.

Source
Violentmonkey: How does Violentmonkey compare to Tampermonkey in performance?

Community benchmarks show Violentmonkey uses about 15 to 30 percent less RAM on Chrome compared to Tampermonkey when managing many open tabs.

Source
Redux DevTools: How do I enable time-travel debugging with Redux DevTools?

Redux DevTools allows you to step back through dispatched actions, canceling actions to return to previous application states. This time-travel debugging is built into the core functionality of the extension.

Source
Violentmonkey: What is the current version of Violentmonkey?

Violentmonkey reached version 2.46.0 as of July 31, 2026, with active ongoing development and regular updates to the open-source project.

Source
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