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Greasyfork

github.com/greasyfork-org/greasyfork Browser Extensions Open-source projectFreeOpen source

Greasy Fork is an open-source online repository and platform for discovering, installing, and publishing user scripts and user styles.

Visit Greasyfork 24 alternatives
github.com/greasyfork-org/greasyfork
Greasyfork homepage screenshot

About Greasyfork

Greasy Fork is an open-source platform for discovering, installing, publishing and discussing user scripts and user styles. It hosts a searchable repository where you can browse scripts and styles for the websites you use, publish and update your own, and follow updates from the projects you install.

Beyond hosting, the site includes community features: you can discuss scripts, leave feedback for authors, and report content, with moderation tools for reviewing and managing submissions. The interface is available in multiple languages maintained by community translators, and scripts can be synchronized from external sources or updated through webhooks.

The project itself is a Ruby on Rails application with a JavaScript frontend. It is licensed under the GNU General Public License v3.0, and its source code, issues and development discussion live on GitHub, where you can also contribute code, review pull requests or help translate. It suits people who want to customize how existing websites behave, and developers who want a place to publish and maintain scripts for others.

Key features

  • Browse and search user scripts and user styles for websites you use
  • Publish, update, synchronize and manage your own scripts
  • Discuss scripts, give feedback and interact with authors
  • Report content, with moderation tools for reviewing submissions
  • Available in multiple languages via community translators
  • Synchronize scripts from external sources with webhook-based updates
Best for: People who want to customize how websites behave, and developers who want to publish and maintain user scripts.
Good for
  • Free and open-source under the GPL-3.0 license
  • Combines script discovery with publishing and community discussion
  • Interface localized into multiple languages by community translators
  • Active codebase with an issue tracker and public contribution guides
Watch out for
  • Scripts generally need a separate user script manager to run
  • Self-hosting requires a Ruby on Rails, MySQL, Redis and Elasticsearch stack

Greasyfork at a glance

Type
Open-source project
Pricing
Free
Open source
Yes · Source code
Language
English
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026
open sourcebrowser extension

Greasyfork alternatives

Tools and sites you could use instead, ranked by how closely they match.

All 24 alternatives

Firemonkey

github.com/erosman/firemonkey

FireMonkey combines user-script and user-style management in a browser extension, with help and changelog resources provided by the project.

open sourceapigit
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24 alternatives

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Greasyfork FAQ

Is Greasy Fork free to use?
Yes. Greasy Fork is free and open-source software under the GPL-3.0 license. The project asks users who find it useful to consider donating, with a suggested contribution of $10, to help cover hosting costs.
What can I do with Greasy Fork?
You can browse and search user scripts and user styles, install them, publish and update your own, and discuss scripts with authors and other users. Moderators also review reported content.
Can I contribute translations?
Yes. Greasy Fork is translated into multiple languages by community translators, with English as the source locale and translation resources managed through Transifex.
Where do I get help or report problems?
There is a dedicated Greasy Fork forum for help with the site, user scripts and related topics. Development discussions and bug reports are handled through the project's GitHub issues.
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Listing maintained by Chris McClure and the WebIndexly editors · Updated Oct 6, 2026 · How we rank