# violentmonkey/violentmonkey

Violentmonkey provides userscripts support for browsers. It works on browsers with WebExtensions support.

Repository: https://github.com/violentmonkey/violentmonkey
Canonical: https://ross.abutalabs.com/products/violentmonkey
Homepage: https://violentmonkey.github.io/
Language: JavaScript
License: MIT
License Family: permissive
Topics: violentmonkey, webextensions, userscripts-support
Last push: 2026-08-24T04:08:07+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 98, longevity 100
- inputs: {"age_days": 4747, "days_push": 9, "days_rel": 16, "gap_med": 7.5, "n_releases_24m": 27}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 8784, forks 747 (observed 2026-08-28T04:10:25.728707+00:00)

## What it is
Violentmonkey is an open-source userscript manager implemented as a browser extension built on WebExtensions APIs. It lets users install and run custom JavaScript scripts to customize web pages and automate tasks across Chrome, Firefox, Edge, and other compatible browsers.

## Use cases
- run userscripts in my browser
- customize how websites look and behave
- automate repetitive tasks on web pages
- greasemonkey alternative for chrome
- sync userscripts across browsers and devices
- manage and edit userscripts with an external editor

## When to choose
- you want a free, open-source userscript manager with no ads
- you need cross-browser support via WebExtensions including Manifest V3 Chrome
- you want script syncing to Dropbox, OneDrive, Google Drive, or WebDAV

## When to avoid
- you need to modify browser behavior beyond web page content
- you want a fully sandboxed extension that never alters pages - installed scripts do modify sites
- you need extension support for browsers without WebExtensions APIs

## Facets
- artifact type: plugin
- maturity: active
- function: browser-extension, workflow-automation, developer-tools
- domain: browser-extensions, web-development, developer-tools
- platform: browser, browser-extension, cross-platform
- tags: userscripts, userscript-manager, webextensions, greasemonkey-compatible, script-injection, page-customization, cloud-sync, automation

## Member repositories
- violentmonkey/violentmonkey (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:25.728707+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:25:13.130516+00:00, confidence not recorded.
  - readme: https://github.com/violentmonkey/violentmonkey (fetched 2026-08-28T04:10:25.728707+00:00, sha 6a8c41bb63d3)
  - homepage: https://violentmonkey.github.io/ (fetched 2026-08-29T08:25:40.424332+00:00, sha 3ea240f19669)
- Data as of 2026-08-30T08:39:29.467469+00:00.