Violentmonkey
Userscript support for browsers, open source.
Violentmonkey: Open Source Userscript Support Add-On for Browsers
Violentmonkey is a versatile add-on designed for Firefox. It extends userscript support to browsers with WebExtensions support and readily accommodates scripts popular with Greasemonkey and Tampermonkey. Feature-packed, it offers automatic script updates, ensures scripts are executed in their order on the list, supports GM functions, allows import /export to a zip file and syncs to Dropbox and OneDrive. It's open-source and offers a frequently updated beta version.
Add-on stats
Manifest V2
By: Gerald
Rating: 4.70 
1 new ratings
(686)
Weekly download count: 5,864
Firefox on Android: Yes
Permissions:
- tabs
- <all_urls>
- webRequest
- webRequestBlocking
- notifications
- storage
- unlimitedStorage
- clipboardWrite
- contextMenus
- cookies
Size: 652.81K
URLs: Privacy policy
Full description: See detailed description
Ranking
# 209 ▲ 1
Other platforms
Not available on Chrome
Not available on Android
User reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Free and open source
- Works perfectly with frequent updates
- Modern alternative to Greasemonkey
- Supports a comprehensive API
- User-friendly and well-received by many users
Cons
- Stopped working in Firefox Android Nightly
Most mentioned
- Open source nature
- Frequent updates and reliability
- Superior to Tampermonkey and Greasemonkey
User reviews
It stopped working in firefox android nightly
by Firefox user 16011214, 2025-03-09
This is the superior userscript manager. It's free & open source, it works perfectly, and has frequent updates. Goodbye tampermonkey, rip Greasemonkey (hasn't worked right in years).
by Eriskyn, 2025-03-05
A great, modern alternative to Greasemonkey, also in terms of the supported API. And it's open source (unlike Tampermonkey), which I consider pretty important for an extension that can access and modify every page you visit!
by Tblue, 2025-03-04
Add-on safety
Risk impact
Violentmonkey requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Violentmonkey. Use it at your own risk.
Risk likelihood analysis details
- Medium This extension was updated in the past 3 months. New updates may not be stable or safe.
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